2018年大学英语四级语法精要(精品资料).doc
2018年全国大学英语四级考试必备语法知识6
2018年全国大学英语四级考试必备语法知识6
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2018年全国大学英语四级考试必备语法知识6
hundred,thousand和million的用法说明
(1)用单数的场合
当这些词与具体数字连用时,习惯上用单数,而且也不后接介词of.如:
He was prepared to pay two million. 他愿意支付200万。
More than a hundred people were injured. 有一百多人受了伤。
但是,当这些词后面的名词有了the,these,those等特指限定词修饰时,或其后的接的是us,them 这样的人称代词时,则此时必须用介词of.如:
About three hundred of them have left there. 他们当中约有300人离开了那儿。
(2)用复数的场合
当这些词不与具体数字连用,而是表示不确定的泛指数时,则不仅要要用复数,而且要后接介词of,然后才能接名词。
如:The sun was shining. Thousands of people were lying on the beach. 阳光灿烂,数以千计的人躺在海滩上。
A careless mistake cost the company millions of pounds. 一个粗心的错误使公司蒙受数百镑的损失。
大学四六级英语考试语法精要大全
大学四六级英语考试语法精要大全(一)不定式语法不定式1. 某些动词后要接不定式某些及物动词后只能接不定式作宾语,其中最常用的动词有agree, afford, arrange, appear, ask, attempt, care, choose, continue, decide, demand, desire, determine, expect, fail, fear, forget, hate, hesitate, hope, intend, learn, like, love, manage, mean, neglect, offer, plan, prefer, prepare, pretend, promise, refuse, regret, remember, seek, tend, try, volunteer, want, wish等。
What do you plan to do tomorrow?She hated to move from such a nice village.In class teachers should try to get feedback from their students2. 不定式的被动式考试大-全国最大教育类网站(www.Examda。
com)不定式有被动式,当不定式的逻辑主语是这个不定式所表示的动作的承受者,不定式要用被动式,在句中可作主语,宾语,定语,状语,复合宾语等。
作定语时,通常表示在谓语动作后将要发生的动作。
The last question to be discussed today is how to do the job more efficiently.She preferred to be given more difficult work to do.3. 不定式的完成式当不定式的动作发生在谓语动词的动作之前,不定式要用完成式,在句中可作宾语,状语以及构成复合宾语,复合谓语。
大学英语四级语法知识讲解
大学英语(CET--4) 语法学习提纲一、词类、句子成分和构词法:1、词类:英语词类分十种:名词、形容词、代词、数词、冠词、动词、副词、介词、连词、感叹词。
1、名词(n.):表示人、事物、地点或抽象概念的名称。
如:boy, morning, bag, ball, class, orange.2、代词(pron.):主要用来代替名词。
如:who, she, you, it .3、形容词(adj..):表示人或事物的性质或特征。
如:good, right, white, orange .4、数词(num.):表示数目或事物的顺序。
如:one, two, three, first, second, third, fourth.5、动词(v.):表示动作或状态。
如:am, is,are,have,see .6、副词(adv.):修饰动词、形容词或其他副词,说明时间、地点、程度等。
如:now, very, here, often, quietly, slowly.7、冠词(art..):用在名词前,帮助说明名词。
如:a, an, the.8、介词(prep.):表示它后面的名词或代词与其他句子成分的关系。
如in, on, from, above, behind.9、连词(conj.):用来连接词、短语或句子。
如and, but, before .10、感叹词(interj..)表示喜、怒、哀、乐等感情。
如:oh, well, hi, hello.2、句子成分:英语句子成分分为七种:主语、谓语、宾语、定语、状语、表语、宾语补足语。
1、主语是句子所要说的人或事物,回答是“谁”或者“什么”。
通常用名词或代词担任。
如:I’m Miss Green.(我是格林小姐)2、谓语动词说明主语的动作或状态,回答“做(什么)”。
主要由动词担任。
如:Jack cleans the room every day. (杰克每天打扫房间)3、表语在系动词之后,说明主语的身份或特征,回答是“什么”或者“怎么样”。
大学英语四级语法指导详解
大学英语四级语法指导详解大学英语四级语法指导详解大学英语四级语法指导(1)非谓语动词与独立主格:短语,句子(或者句子,短语)当短语部分有独立主语,并且该主语不同于句子主语,这时短语结构称为独立主格。
(它最明显的特点是短语部分有独立的主语)。
独立主格的结构1:名词(代词)+ 分词 [现在分词、过去分词]现在分词表示主动的,正在进行的行为;过去分词表示被动的,已经完成的行为。
作题时要通过判断动作与名词(代词)之间的关系来确定是使用现在分词还是过去分词。
当动作由名词(代词)发出时使用现在分词,而名词(代词)是受动者时则用过去分词。
1. Silver is the best conductor of electricity, copper _B_ it closely.A followedB followingC to followD being followed2. All things _A_, the planned trip will have to be called off.A consideredB be consideredC consideringD having consideredcall off 取消; cancel vt. 取消; 四级中的考点就是现在分词和过去分词的区别。
独立主格的结构2:with + 名词(代词)+ 分词 [句子当中作状语]3. After the Arab states won independence, great emphasis was laid on expanding education, with girls as well as boys _C_ to go to school.A to be encouragedB been encouragedC being encouragedD be encouragedas well as 和(相当于and); be encouraged不会考。
大学英语四级语法讲义
大学英语四级主要语法句子成分组成句子的各个部分叫句子成分。
英语句子成分有主语,谓语,表语,宾语,宾语补足语,定语,状语等。
顺序一般是主语,谓语,宾语,宾语补足语,而表语,定语,状语的位置要根据情况而定。
1、主语主语表示句子主要说明的人或事物,一般由名词,代词,数词,不定式等充当。
Helikeswatch'ingTV.他喜欢看电视。
2、谓语谓语说明主语的动作,状态或特征。
一般可分为两类:1),简单谓语由动词(或短语动词)构成。
可以有不同的时态,语态和语气。
Westud'yforthepeo'ple.我们为人民学习。
2),复合谓语:情态动词+不定式Icanspeakalit'tleEng'lish.我可以说一点英语。
3、表语表语是谓语的一部分,它位于系动词如be之后,说明主语身份,特征,属性或状态。
一般由名词,代词,形容词,副词,不定式,介词短语等充当。
Mysis'terisanurse.我姐姐是护士。
4、宾语宾语表示动作行为的对象,跟在及物动词之后,能作宾语的有名词,代词,数词,动词不定式等。
WelikeEng'lish.我们喜欢英语。
有些及物动词可以带两个宾语,往往一个指人,一个指物,指人的叫间接宾语,指物的叫直接宾语。
Hegavemesom'eink.他给了我一点墨水。
有些及物动词的宾语后面还需要有一个补足语,意思才完整,宾语和它的补足语构成复合宾语。
如:Wemakehimourmon'itor.我们选他当班长。
5、定语在句中修饰名词或代词的成分叫定语。
用作定语的主要是形容词,代词,数词,名词,副词,动词不定式,介词短语等。
形容词,代词,数词,名词等作定语时,通常放在被修饰的词前面。
Heisanewstu'dent.他是个新生。
但副词,动词不定式,介词短语等作定语时,则放在被修饰的词之后。
Thebikeintheroomismine.房间里的自行车是我的。
大学英语4级语法笔记
大学英语4级语法笔记
1. 主谓一致
- 主语和谓语在人称和数上保持一致。
- 当主语是单数第三人称时,谓语动词要加s。
- 当主语是复数时,谓语动词不加s。
2. 动词时态
- 一般现在时:表示经常性或惯性的动作。
- 现在进行时:表示现在正在进行的动作。
- 一般过去时:表示过去某个时间发生的动作。
- 过去进行时:表示过去某一段时间内正在进行的动作。
- 现在完成时:表示过去某个时间发生的动作对现在造成的影
响或结果。
- 过去完成时:表示过去某个时间发生的动作对过去的另一个
时间或动作造成的影响或结果。
3. 形容词和副词的比较级和最高级
- 比较级:注意形容词和副词在比较级前面要加上more或less。
- 最高级:注意形容词和副词在最高级前面要加上the most或the least。
4. 名词所有格
- 表示属于关系时,在名词后面加's。
- 表示复数名词所有格时,在名词后面加'。
5. 祈使句和感叹句
- 祈使句表示命令、请求或建议,一般用动词原形。
- 感叹句表示惊讶、赞叹等情感,常以What、How等引导。
6. 介词的用法
- 介词用于表示位置、时间、方式等关系。
- 常用的介词有in、on、at、under、over等。
以上是大学英语4级语法的一些基础知识点,请在学习和写作时注意运用。
大学英语四级语法精要(PDF,已排版)
CET大学英语四级语法精要大学英语四级语法精要Ⅰ动词(时态,语态,用法,省略,一致性等)1.时态1)现在完成进行时态(have/has been+-ing分词构成):动作或状态从过去某时开始,继续到现在,可能继续下去,也可能刚刚结束.I’ve been writing letters for an hour.I’ve been sitting in the garden.2)过去完成进行时(由had been+ing分词构成):过去某个时刻以前一直在进行的动作I’d been working for some time when he called.We had been waiting for her for two hours by the time she came.3)将来完成进行时:将来某个时刻以前一直在进行的动作.By next summer,he will have been working here for twenty years.In another month’s time she’ll have been studying here for three years.4)将来完成时(由shall/will have+过去分词构成):将来某时会业已发生的事.I shall have finished this one before lunch.They’ll have hit the year’s target by the end of October.2.语态1)可以有两种被动结构的类型,例如:He was said to be jealous of her success.It was said that he was jealous of her success.能同时适用于上述两个句型的主动词通常都是表示“估计”,“相信”等意义的动词,常见的有assume,believe,expect,fear,feel,know,presume,report,say,suppose,understand等.It is supposed that the ship has been sunk.The ship is supposed to have been sunk.担当be supposed to与不定式的一般形式搭配时往往表示不同的意义.例如:Why are you driving so fast in this area?You are supposed to know the speed to know the speed limit.(你应该晓得速度限制)2)双宾语及宾补结构的被动语态a)双宾语结构的被动语态:双宾语结构变为被动语态时,可以把主动结构中的一个宾语变为主语,另一个宾语仍然保留在谓语后面,但多数是把间接宾语变为主语.He was asked a number of questions at the press conference.Two days were allowed them for making the necessary preparations.b)宾补结构的被动语态:She was called Big Sister by everybody.Then he was made a squad leader.He was considered quite qualified for the job.The room was always kept clean and tidy.3.短语动词1)Vi+advThe plane took off two hours late.2)Vi+prepThey looked round the Cathedral.3)Vi+prep(有被动语态)She’s looking after her sister’s children.The children were always well looked after.4)Vi+adv+prepI began to look forward to their visits.5)Vt+O+advSome women choose to stay at home and bring up their children.The children were brought up by their mother.They took him on.6)Vt+adv+O(无被动语态)I am trying to give up smoking.7)Vt+O+prepWe talked Donald into agreement.4.省略1)在以as,than,when,if,unless等引导的从句中的省略:在有些状语从句中,如果谓语包含有动词be,主语又和主句的主语一致a),或者主语是it b),就常常可以把从句中的主语和谓语的一部分(特别是动词be)省略掉.a)Look out for cars when crossing the street.When taken according to the directions,the drug has no side effects.While there he joined in voluntary labour on a project.Although not yet six months old,she was able to walk without support.If not well managed,irrigation can be harmful.Though reduced in numbers,they gained in fighting capacity.This viewpoint,however understandable,is wrong.Enemies,once discovered,were tightly encircled and completely wiped out.She hurriedly left the room as though/if angry.She worked extremely hard though still rather poor in health.Fill in the application as instructed.Whenever known,such facts should be reported.The documents will be returned as soon as signed.He said that no acrobat could ever perform those daring feats unless trained very young.Once having made a promise,you should keep it.b)If necessary I’ll have the letter duplicated.Fill in the blanks with articles where(ver)necessary.If possible,I should like to have two copies of it.As scheduled,they met on January20at the Chinese Embassy.2)在以than a)或as b)引起的从句中,常会有一些成分省略.a)He told me not to use more material than(it is)necessary.We should think more of the collective than of ourselves.b)They worked with as much enthusiasm as young people(did).He is now a vice-manager,but still often works in the kitchen as before.Their training is free,as is all education.We will,as always,stand on your side.3)错误的省略His life is as fully committed to books as anyone I know.While standing there in her nightgown,two bullets struck the wall beside her.5.一致1)如果主语是单数,尽管后面跟有with,together with,as well as,as muchas,no less than,more than等引导的短语,谓语动词仍旧用单数形式.Terry,along with her friend,goes skating every Saturday.An expert,together with some assistants,was sent to help in this work.The captain,as well as the coaches,was disappointed in the team.2)代词作主语时的一致a)each,either,neither和由some,any,no,every构成的复合代词,都作单数看待.Each of us has something to say.Is everybody ready?Somebody is using the phone.Neither of us has gone through regular training.Has either of them told you?b)some,few,both,many等作复数c)some可后接复数,也可接单数,表示某一.none作复数看待时较多,但也有时作单数看待,主要看说话人脑中联系想到的是复数还是单数概念,但none在代表不可数的东西时总是看作单数:None of the books are easy enough for usNone of us seem to have thought of it.None(=not a single one)of us has got a camera.None(=nobody)has felt it more keenly than she did.None of this worries me.all和most可后接复数,也可接不可数名词(all of the…,most of the…),动词用单数.3)由and或both…and连接名词词组时,后用复数;由not only…but(also),either…or,neither…nor或or连接的并列主语,谓语通常和最邻近的主语一致.Not only the switches but also the old writing has been changed.My sister or my brother is likely to be at home.Either you or Mr Yang is to do the work.Neither my wife nor I myself am able to persuademy daughter to change her mind.如果一个句子是由there或here引导,而主语又不止一个,谓语通常也和最邻近的那个主语一致. There was carved in the board adragon and a phoenix.Here is a pen,a few envelopes and some paper for you.4)people,police,cattle,poultry(家禽),militia(民兵)等通常都用作复数.Cattle are grazing on the pasture.The police are looking for him.有些集体名词有时作单数看待,有时作复数看待,主要根据意思来决定.very large.His family isn’tHis family are all music lovers.The committee meets twice a month.The committee aredivided in opinion.The audience was enormous.The audience were greatly moved at the words.有些名词单复数同形,可根据意思决定谓语动词的数:This new series is beginning next month.These new series are beginning next month.This species is now extinct.These speciesare now extinct.5)表示时间,重量,长度,价值等的名词,尽管仍是复数形式,如果作整体看待,动词也可用单数形式(当然用复数动词也是可以的):Three weeks was allowed for making the necessarypreparations.One hundred li was covered in a single night.6)其他问题a)书名,国家名用单数:Talesfrom Shakespeare is a book by Charles Lamb.b)学科名,如mathematics,economics用单数.c)many a或more than one所修饰的词作主语时,谓语动词多用单数形式:Many a person has had that kind of experience.More than one person has involved in the case.a number of后接复数,the number of后接单数:A number of books have been published on the subject.The number of books published on the subject is simply amazing.d)one of those后用单数.在“one of+复数名词+关系分句”结构中,关系分句中谓语动词的单复数形式在一般情况下有两形式,一是根据先行词采用复数形式:Joan is one of those people who go out of their way to be helpful.当one之前友the only等限定词和修饰语时,关系分句谓语动词根据one而定,即采用单数形式:He is the only one of those boys who is willing to take on another assignment.Ⅱ非谓语动词1.不定式1)形式主动形式被动形式一般式to do to be done完成式to have done to have been done进行式to be doing完成进行式to have beendoinga)完成式:不定式的一般形式所表示的动作,通常与主要谓语表示的动作(状态)同时(或几乎同时)发生,或是在它之后发生.假如不定式所表示的动作,在谓语所表示的动作(状态)之前发生,就要用不定式的完成式.I am glad to have seen your mother(=I am glad I have seenyour mother).(比较:I am glad to see you.)He is said to have written a new book about workers.He pretended not to have seenme.b)进行式:如果主要谓语表示的动作(状态)发生时,不定式表示的动作正在进行,这时要用不定式的进行式.quite recovered yet.You are not supposedto be working.You haven’texpect you to be waiting for us here.We didn’tHe pretended to be listening attentively.c)完成进行式:在谓语所表示的时间之前一直进行的动作,就要用不定式的完成进行式.The struggle was known to have been going for twenty years.We are happy to have been working with you.d)被动式:当不定式的逻辑上的主语是不定式所表示的动作的承受者时,不定式一般要用被动形式.It is an honour for me to be asked to speak here.She hated to be flattered.He wanted the letter to be typed at once.This is bound to be found out.There are a lot of things to be done.She was too young to be assigned such work.2)功用:不定式可以作主语(a),宾语(b),表语(c),定语(d)或是状语(e).a.To scold her would not be just.b.We are planning to build a reservoir here.c.One of our main tasks now is to mechanize agriculture.d.Do you have anything to declare?e.We have come to learn from you.3)不带to的不定式:a)在“动词+宾语+不定式”结构中,如果动词是表示感觉意义的see,hear,watch,smell,feel,notice等,或是表示“致使”意义的have,make,let等,其后的不定式结构不带to.John made her tell him everything.这类结构转换为被动语态时,后面的不带to的不定式一般还原为带to的不定式.She was made to tell him everything.b)在had better,had best,would rather,would sooner,would just as soon,might(just)as well,cannot but等搭配之后,动词不定式也不带to.I’dr ather not have eggs and bacon for breakfast.They cannot but accept his term.c)在make do,make believe,let drop,let fall,let fly,let slip,let drive,let go of,let there be,hear say,hear tell,leave go of等固定搭配中,用不带to的动词不定式.John let fly a torrent of abuse at me.I’ve heard tell of him.d)在动词help(或help+宾语)之后可用不带to的不定式,也可用带to的不定式.Can I help(to)lift this heavy box?e)在介词except,but之后,如果其前有动词do的某种形式,不定式一般不带to,反之带to. There is nothing to do except wait till it stops raining.Smith will do anything but work on a farm.n o choice but to wait till it stops raining.There’sf)连词rather than,sooner than置于句首时,其后的不定式不带to.Rather than push the book back as he wanted to do,he forced himself to pick it up.出现在句中其他位置时,其后的不定式有时带to,有时不带to.He decided to write rather than telephone.The manager believes it is important to invest in new machinery rather than to increase wages.g)用作补语的动词不定式,如果主语是由“all+关系分句”,“thing+关系分句”,“what分句”或“thing+不定式结构”等构成,并带有do的某种形式,这时,作为主语补语的不定式可以省to,也可以不省.What he will do is(to)spoil the whole thing.All you do now is complete the formThe only thing I can do now is go on by myself.The thing to do now is clear up this mess.The least I can do is drive everybody else closer to the issue.4)不定式的其他用法a)too…to结构通常表示否定意义:She was too young to understand all that.enough…to结构则表示肯定意义:She was not old enough to understand all that.not too,but too,all too,only too等和不定式连用时,不定式一般不表示否定意义:He’sonly too pleased to help her.so…as(to)这种结构也可用不定式作状语:Be so kind as to drop in some time when you are free.b)如果要说明不定是表示的动作是谁做的,可以在不定式前加一个for引起的短语:It is not hard for one to do a bit of good.It is a great honour for us to be present at this rally.在以某些形容词(如kind,good,nice,wise,unwise,clever,silly,wrong,right,foolish,stupid, careless,considerate,rude,naughty,impolite等)作表语时,不定式前可加一个of引起的短语,来说明不定式指的是谁的情况:kind of you to think so much of us.It’s(It is)Awfully good of you to come and meet us.very nice of you to be so considerate.It’sIt’sunwise of them to turn down the proposal.2.V+ing形式(现在分词及动名词)1)形式a)完成式:如果要表示动名词代表的动作在谓语所表示的动作之前发生,通常用动名词的完成形式.mention having met me.He didn’tI regret not having taken her advice.在某些动词后(或成语中),常用(或可以用)动名词的一般形式,尽管动作是在谓语所表示的动作之前发生的.Excuse me for coming late.remember ever seeing him anywhere.I don’t现在分词的完成式主要用在状语中,表示这动作在谓语所表示的动作之前发生.Having been there many times,he offered to be our guide.Having found the cause,they were able to propose a remedy.另外,独立结构也可用现在分词的完成形式.The guests having left,they resumed their discussion.The children,having eating their fill,were allowed to leave the table.b)被动式:当一个动名词逻辑上的主语所表示的是这动作的对象时,动名词一般要用被动形式. His being neglected by the host added to his uneasiness.bear being made fun of like that.He couldn’t但要注意,在want,need,deserve,require等动词后,尽管表示的是被动的意思,却用动名词的主动形式.My pen needsfilling.The point deserves mentioning.This problem requires studying with great care.在worth这个形容词后情形也是这样.Her method is worth trying.现在分词的被动式可以用来作定语,宾语补足语,状语及用于独立结构中.This is one of the experiments being carried on in our laboratory.You’llfind the topic being discussedeverywhere.very well refuse.Being asked to give aperformance,she couldn’tThese are sold at reduced prices,the defects always being pointed out to the customers.c)完成被动式:如果表示的动作在谓语表示的动作之前发生,有时需要用动名词的完成被动式.I don’tremember having ever been given a chance to try this method.但在多数情况下都避免使用这一形式,而用一般被动形式代替,以免句子显得累赘.现在分词的完成被动式一般用来作状语或用于独立结构中.Having been given such a good chance,how could she let it slip away?The decision having been made,the next problem was how to make a good plan.All the compositions having been written and collected,the teacher sent the students home.2)句法功用a)作主语:Walking is good exercise.nice talking to you.It’sThere is no denying the fact that the new method has greatly raised labour productivity.b)作宾语:Your shoes needpolishing.d elay sending the tractors over.You mustn’tHe avoided giving us a definite answer.c)作介词宾语:动名词作介词宾语用的时候最多.它常可以用在某些成语后面,常见的有:insist on,persist in,think of,dream of,object to,suspect…of,a ccuse…of,charge…with,hear of, approve of,prevent…from,keep…from,stop…from,refrain from,be engagedin,look forward to, opposed to,depend on,thank…for,feel like,excuse…for,aim at,devote…to,set about,spend…in, get(be)used to,be fond of,be capable of,be afraid of,be tired of,be sick of,succeed in,be interested in,feel(be)ashamedof,be proud of,be keen on,be responsible for.d)作表语:The real problem is getting to know the needsof the people.动名词和不定式都可以作主语或表语.一般说来,在表示抽象的一般的行为时多用动名词;在表示具体某词动作,特别是将来的动作时,多用不定式.e)作宾语补足语:分词可以在see,hear,notice,watch,feel,find,keep,get,have等动词后作宾语补足语.The words immediately set us all laughing.Once we caught him dozing off in class.His remark left me wondering what he was driving at.在see,hear,feel,watch,notice等动词后,及可用现在分词,也可用不定式构成宾语补足语.用现在分词时,表示动作正在发生,用不定式时表示动作发生了.Do you hear someone knocking at the door?Yes,I did.I heard him knock three times.f)作状语:现在分词作状语时,通常都表示主语正在进行的另一动作,来对谓语表示的主要动作加以修饰或作为陪衬.I ran out of the house shouting.I got home,feeling very tired.Driving to Chicago that night,I was struck by a sudden thought.现在分词短语有时可以用作状语表示原因,相当于一个表示原因的状语从句.get in touch with her.Not knowing her address,we couldn’tSeeing nobody at home,she decided to leave them a note.want to go to the cinema.Having already seen the film twice,she didn’t现在分词短语有时可用作时间状语,相当于when引起的从句:help thinking of those memorable days they spent together.Seeing those pictures,he couldn’t如果两个动作是完全同时发生的,多用when或while加分词这种结构.Be careful when crossing the street.When leaving the airport,they waved again and again to us.She got to know them while attending a conference in Beijing.3)前面带有代词或名词的动名词结构:一个动名词前面可以加一个物主代词(或名词的所有格结构),来表示这个动名词逻辑上的主语.Their coming to help was a great encouragement to us.Our sole worry is your relying too much on yourself.Do you mind my reading your paper?They insisted on my staying there for supper.如果不是在句子开头,这个结构常常可以用名词的普通格(或人称代词宾格),这比用所有格更自然一些.I don’tm ind him going.She hates people losing their temper.help,mind,admit,enjoy,leave off, 4)只能用动名词作宾语的动词:suggest,finish,avoid,stop,can’trequire,postpone,put off,delay,practise,fancy,excuse,pardon,advise,consider,deny,endure, escape,miss5)既可用动名词,也可用不定式作宾语的动词:love,like,hate,dislike,begin,start,continue,intend,a ffordattempt,can’tb ear,propose,want,need,remember,forget,regret,neglect,try,deserve,can’t等.有时两种结构之间意义差别不大,有时却有不同的意思.在remember,regret,want,try等词后差别是比较明显的.I remember seeing her once somewhere.I must remember to take my notebooks with me.I regret not having accepted your advice.I regret to say I haven’tgiven you enough help.want(need)to come.She doesn’tThe house wants(needs)cleaning.We must try to get everything done in time.t ry doing the work some other way.Let’s6)悬垂修饰:分词作状语时,表示的必须是主语的一个动作或状态.Walking through the park,we saw a lot of flowers.(walking是we的动作,正确)Walking through the park,the flowers looked very beautiful.(错误)Standing on the tower,we could see the whole city.(正确)Standing on the tower,the whole village could be seen.(错误)3.分词1)意义:过去分词通常来自及物动词,带有被动意义和完成意义;而现在分词有的来自及物动词,有的来自不及物动词,通常带有主动意义和未完成意义.frozen food a freezing winda bored traveller a boring journeya lost cause a losing battlea conquered army a conquering armya finished article the last finishing touchthe spoken word a speaking birda closed shop the closing houra recorded talk a recording machine来自不及物动词的过去分词很少能单独用作前置修饰语,能作这样用的仅限于下面几个词,仅表示完成意义,不表示被动意义.the risen sun,fallen leaves,faded/withered flowers,returned students,retired workers,departed friends,escapedprisoners,the vanished jewels,newly-arrived visitors用作后置修饰语的过去分词一般都带有修饰语或其他成分,在意义上相当于关系分句.Most of the people invited to the reception were old friends.2)句法作用a)作定语:distinguished guest贵宾,unknown heroes无名英雄,armed forces武装部队,cannedfood罐头食品,boiled water开水,steamedbread馒头,stricken area灾区分词还可构成合成词作定语:simply-furnished room陈设简单的房间,clear-cut answer明确的答复, highly-developed industry高度发展的工业,heartfelt thanks衷心的感谢,hand-made goods手工制品,man-made satellite人造卫星b)作补足语:可以带过去分词作宾语补足语的动词有:see,hear,feel,find,think等表示感觉和心理状态的动词.I saw the students assembled in the hall.We found her greatly changed.make,get,have,keep等表示”致使”意义的动词:I have my hair cut every ten days.She got her bad tooth pulled out.Please keep us informed of the latest developments.like,want,wish,order等表示希望,要求,命令等意义的动词:want any of you(to be)involved in the scandal.I don’tHe won’tlike such questions(to be)discussed at the meeting.c)过去分词短语常用作状语,修饰谓语,很多都说明动作发生的背景或情况.Guided by these principles,they went on with the work,Delighted with her work,they made her the general manager.过去分词短语也可作状语表示原因,相当于一个表示原因的状语从句.Influenced by his example,they performed countless good deeds.有时也可说明动作发生的时间,相当于一个表示时间的状语从句.This method,tried in areas near Shanghai,resulted in a marked rise in total production.间或也可表示一个假设的情况,相当于一个条件从句.Given closer analysis,we can see this is totally wrong.偶尔也可用来代替一个“让步”状语从句.Picked20years a year,it grows tired only after40or50years.d)独立结构:在用分词短语作状语时,它逻辑上的主语一般必须与句子的主语一.致.但有时它也可以有自己独立的逻辑上的主语,这种结构称为独立结构,一般表示一种伴随的动作或情况.He rushed into the room,his face covered with sweat.有时可以表示时间:Late that autumn,his work finished,he prepared to return to his institute.表示原因:Her eyesdimmed with tears,she did not see him enter.条件:All things considered,her paper is of greater value than yours.Ⅲ虚拟语气1.that从居中:1)wish,would rather(sooner),had better:I wish I were as strong as you.I wish I had paid more attention to our pronunciation.I wish I remembered the address.I would rather they came tomorrow(you had gone there too).I had rather(that)you told him than I did.2)suggest,order,demand,propose,command,request,desire,insist等动词后的宾语从句:The commander ordered that all civilians(should)be evacuated.He asked that he be given an opportunity to try.She urged that he write and accept the post.3)it is desired,it is suggested,it is requested,it was ordered,it was proposed,it is necessary,it isimportant,it hasbeen decided等结构后的主语从句中.It was arranged that they leave the following weekIt will be better that we meet some other time.4)suggestion,motion,proposal,order,recommendations,plan,idea等后面的表语从句和同位语从句:His sole requirement is(was)that thy system be adjusted.2.在某些句型中1)it is time thatIt is time that we went(或should go)to bed.It is high time we(should)put an end to this controversy.2)as if(though)引起的从句:They talked(are talking)as if they had been friends for years.It seems as if it was(were)spring today.He acts(acted)as if(though)he were(was)an expert.3)以lest,for fear that和in case引起的从句(这时谓语多用should+动词原形):He took his raincoat with him lest it should rain.He put his coat over the child for fear that(或lest)he should catch cold.I’ll keep a seat for you in caseyou should needit.4)以whatever,whoever,no matter what这类代词或词组引起的从句(这时,谓语多用may加动词原形构成):Whatever defects he may have,he is an honest man.Come what may,we will go ahead.不管发生什么情况,我们都要干下去.I accept that he is old and frail;be that as it may,he’ss till a good politician.我承认他年老体衰,然而尽管如此,它仍是优秀的政治家.3.条件句1)虚拟条件句主要有下面两类:a)表示现在及将来情况(表示纯然假设或实现的可能性不大的情况):谓语主要形式如下(be多用were这个形式):从句主句过去式would+动词原形If I were you,I wouldn’tl ose heart.How nice it would be if you could stay a bit longer.b)表示过去情况的虚拟条件句(与事实完全相反的假设情况),谓语主要形式如下:从句主句had+过去分词would have+过去分词She would have come if we had invited her.taken your advice,I would havemade a bad mistake,If I hadn’tYou wouldn’th ave caught cold if you had put on more clothes.2)有时候,条件从句表示的动作和主句表示的动作,发生的时间是不一致的(如一个是过去发生的,一个是现在发生的).这时,动词的形式要根据表示的时间来调整.这种句子可以称为错综时间条件句.If he had received six more votes,he would be our chairman now.got everything ready by now,we should be having a terrible time tomorrow.If we hadn’t3)有时假设的情况并不以条件从句表示,而是通过一个介词短语来表示.Without music,the world would be a dull place.We could have done better under more favorable conditions.That would have been considered miraculous in the past.But for the storm,we should have arrived earlier.4)如果条件句从句中包含有were,had,should或could,有时可把if省略掉,并把were,had,should或could放在主语前面.Had we made adequatepreparation,we might have succeeded.Should there be a flood,what should we do?Were it not for their assistance,we would be in serious difficulty.Ⅳ介词1.合成介词和复杂介词1)合成介词:inside,into,onto,out of,outside,throughout,upon within,without2)复杂介词:according to,along with,apart from,as for,as to,becauseof,by means of,in frontof,in spite of,instead of,in accordance with,on account of,on behalf of,owing to,due to,together with,up to,with regard to,prior to等2.介词在句末:This is what he is interested in.Does everyone has a seatto sit on?3.名词加介词(n+prep)1)某些名词之后要求用某些介词:solution to,faith in,glance at,needfor2)某些名词之前要求用某些介词:on one’sguard,at one’srequest,in all probability,to mydelight4.动词加介词1)Vi+prep:prevail on,appeal to,fall into,apply for,touch upon2)Vt+O+prep:lay emphasison,take advantage of等3)Vi+adv+prep:I don’tw ish to break in on your thoughts.The family came up against fresh problems.You’re not telling me the whole story.You’re holding out on me.She got off with him soon after she began to work at the institution.4)Vt+O+adv+prep:take your resentment out on me.You shouldn’tput the shortage down to bad planning.We shouldn’t5.形容词加介词about---anxious,careful,careless,certain,considerate,enthusiastic,guilty,happy,mad,particular, sad,sure,timid,unhappy,etcat---awkward,bad,clever,disappointed,disgusted,good,marvellous,quick,skilful,skilled, useless,weak,etcfor---convenient,eligible,grateful,homesick,hungry,necessary,noted,perfect,responsible,etcfrom---evident,exempt,inseparable,safe,tired,etcin---deficient,expert,liberal,quick,rich,successful,weak,etcof---apprehensive,characteristic,critical,destructive,envious,hard,inconsiderate,impatient, dependent,jealous,positive,scared,sensible,short,sick,suspicious,typical,worthy,etcon---dependent,keen,intent,etcto---acceptable,accessible,agreeable,alive,attentive,blind,comparable,courteous,deaf, destructive,essential,favourable,hostile,indifferent,married,obedient,parallel,preferable,related, responsible,sensitive,suitable,unjust,etcwith---awkward,bored,careful,disappointed,generous,identical,ill,impatient,popular,sick, wrong,etcⅤ连词1.并列连词1)表示意义的引申:and,both…and,not only…but(also),as well as,and…as well,neither…nor2)表示选择:or,either…or3)表示转折:but,while,whereas,yet,however/nevertheless(也可认为是副词)4)表示因果:for,so,therefore,hence2.从属连词1)表示时间:when,while,as,after,before,since,until(till),as soon as,once2)表示原因:because,as,since,now that,seeing that3)表示条件:if,unless,in case,provided(that),suppose,as long as,on condition(that),4)表示其他关系:(al)though,than,as/so…as,lest,in order that,so…thatⅥ定语从句1.限制和非限制性定语从句:限制性定语从句是名词词组不可缺少的一个组成部分,去掉了会造成病句或意义不明确;非限制性定语从句属于补充说明性质,去掉了不会影响主要意义,通常用逗号与它的先行词分开.The boys who wanted to play football were disappointed when it rained.The boys,who wanted to play football,were disappointed when it rained.如果定语从句的先行词是专有名词,或是带有形容词性物主代词(my,his,etc)或形容词性指示代词(this,that,etc)作限定词,其后的定语从句通常都是非限制性的:Mary Smith,who is in the corner,wants to meet you.Her mother,who had long suffered form arthritis,died last night.All these books,which have been donated by visiting professors,are to be used by the postgraduates.在非限制性定语从句中只能用who/whom指人,用which指物,通常不用that替代.My father,who had been on a visit to America,returned yesterday.All the books,which had pictures in them,were sent to the little girl.2.定语从句的引导词1)that,who,whom:非限制性定语从句,如果修饰人,一般用who,有时用that(作主语时用who较多).如果关系代词在从句中作宾语,就应当用宾格whom或that,但在大多数情况下都可以省略掉,在口语中可用who代替whom.Here is the man(whom)you’ve been looking for.He is a man(that)you can safely depend on.The people(who/that)you were talking to were Swedes.There are some people here who I want you to meet.但在介词后只能用whom:This is the man to whom I referred.但在口语中一般都把介词放到句子后面去,这时可用that,但省略时更多一些.Have you met the person about whom he was speaking?Have you met the person(that)he was speaking aboutThe girl to whom I spoke is my cousin.The girl(who/that)I spoke to is my cousin.2)限制性定语从句如果修饰“物”,用关系代词that的时候较多,也有时用which..当这个代词在从句中是用作宾语时,在绝大多数情况下都是省略的,特别是口语中(尤其是当被。
2018年专业英语四级语法题详解
2018年专业英语四级语法题详解11. The Bent Pyramid outside Cairo ______ ancient Egypt’s first attempt to build asmooth-sided pyramid.A. has been believed to have beenB. was believed to beC. is believed to have beenD. is believed to be选[C]。
译文:有人认为开罗外面的Bent金字塔是古埃及第一次尝试修建的边角光滑的金字塔。
解释:“开罗外面的Bent金字塔”意指,是否是“第一次”,是现在研究的结果,没有表过去的标记或上文,不选B;也不是过去研究对现在产生的结果或延续到现在,不选A;金字塔已经修成,在人们的看法之前,不选D。
相似例句:He is said to have been invited.They are said to have taught chimpanzees to use human language.The four men are widely believed to have been killed by their captors.12. U.S. News _____ rankings of colleges since 1983. They are a very popularresource for students looking to apply to a university campus.A. maintainsB. is maintainingC. maintainedD. has been maintaining选[D].译文:《美国新闻和世界报道》自1983年以来,一直稳居众多大学阅读的排行榜上。
它们是在校大学生获取信息的很受欢迎的渠道。
解释:“1983年以来”,多用完成体(have +ved),到现在还有影响,还可能会持续下去,要用进行体(Be+ving),两相结合为: Have +been+Ving.13. He was lured into a crime he would not _____ have committed.A. actuallyB. accidentallyC. otherwiseD. seldom选[C].译文:他被引诱,结果犯了他本来不会犯的罪。
英语四级语法重点整理
英语四级语法重点整理英语四级考试中,语法是非常重要的一部分内容。
掌握好语法规则不仅有助于理解阅读材料,还能提高写作和口语的表达准确性。
下面是英语四级语法的重点整理。
一、时态1. 一般现在时:表示经常性动作、客观真理等。
2. 现在进行时:表示现在正在进行的动作。
3. 一般过去时:表示过去某个具体时间发生的动作。
4. 过去进行时:表示过去某一时刻正在进行的动作。
5. 一般将来时:表示将来某个时间会发生的动作。
二、被动语态被动语态由助动词be加上动词的过去分词构成,用于强调动作的承受者而非执行者。
被动语态的时态和主动语态保持一致。
三、倒装句1. 全部倒装:把助动词或情态动词放在主语之前,用于表示强调、条件、地点状语等情况。
2. 部分倒装:将助动词、情态动词或系动词放在句首,用于表示否定、否定含义的副词、状语从句等情况。
四、条件句1. 第一类条件句:表示对未来某种条件的假设,主句用一般现在时,从句用一般现在时。
2. 第二类条件句:表示对现在某种不可能实现的假设,主句用would/could/might + 动词原形,从句用过去完成时。
3. 第三类条件句:表示对过去某种不可能实现的假设,主句用would/could/might + have + 过去分词,从句用过去完成时。
五、比较级和最高级1. 比较级:表示两个人或物之间的比较,一般在形容词或副词前加-er,或在词前加more。
2. 最高级:表示三个或三个以上人或物之间的比较,一般在形容词或副词前加-est,或在词前加most。
六、名词1. 可数名词:表示可以计数的名词,可以与a/an或数字等连用。
2. 不可数名词:表示无法计数的名词,不能与a/an或数字等连用。
3. 复数形式:一般在词尾加-s,或变音,或保持不变。
七、冠词1. 不定冠词:用于特指单数可数名词前,表示泛指。
2. 定冠词:用于特指单数或复数名词前,表示特指。
八、动词1. 动词的时态和语态变化规律。
2018年12月英语四级词汇讲解丨考点归纳:状语从句
2018年12月英语四级词汇讲解丨考点归纳:状语从句大学英语四级考试马上就来到了,临近考试,需要加强词汇训练,只有词汇量达到一定积累,才能轻松应考,下面无忧考网四六级频道整理了《2018年12月英语四级词汇讲解丨考点归纳:状语从句》一文,希望对大家备考有所帮助,并预祝同学们高分通过考试。
2018年12月英语四级词汇讲解丨考点归纳汇总英语四级词汇讲解丨考点归纳:状语从句My task is to build fluency while providing the opportunity inherent in anywriting activity to enhance the moral and emotional development of my students.英语四级译文:我的任务就是在任何写作活动中提供一些内在的机会来培养他们英语的流畅程度,以此来增强学生道德和情感上的发展。
四级词汇讲解:本句的主干是task is to build fluency。
while…为句子的伴随状语;to enhance the moral andemotional development of my students为目的状语。
inherent in的意思是“内在的,固有的”。
如:That s the power inherent in the office of President.那是总统任内固有的权力.英语四级考点归纳:状语从句通常采用省略的形式,采取省略结构,常见的如下:※时间状语从句可省略主语和系动词。
如:He had an accident while ( he was ) on his way home.他在回家的路上出了事故。
※条件状语从句可省略主语和系动词。
如:If ( you are ) in doubt, ask at your local library.如有疑问,可向当地图书馆查询。
四级语法精要浓缩精华版(一)
四级语法精要浓缩精华版(一)非谓语动词1. 不定式1) 形式主动形式被动形式一般式 to do to be done完成式 to have done to have been done进行式 to be doing完成进行式 to have been doinga) 完成式: 不定式的一般形式所表示的动作, 通常与主要谓语表示的动作(状态)同时(或几乎同时)发生, 或是在它之后发生. 假如不定式所表示的动作, 在谓语所表示的动作(状态)之前发生, 就要用不定式的完成式.I am glad to have seen your mother (= I am glad I have seen your mother).(比较: I am glad to see you.)He is said to have written a new book aboutworkers.He pretended not to have seen me.b) 进行式: 如果主要谓语表示的动作(状态)发生时, 不定式表示的动作正在进行, 这时要用不定式的进行式.You are not supposed to be working. You haven’t quite recovered yet.We didn’t expect you to be waiting for us here.He pretended to be listening attentively.c) 完成进行式: 在谓语所表示的时间之前一直进行的动作, 就要用不定式的完成进行式.The struggle was known to have been going for twenty years. We are happy to have been working with you.d) 被动式: 当不定式的逻辑上的主语是不定式所表示的动作的承受者时, 不定式一般要用被动形式.It is an honour for me to be asked to speak here.She hated to be flattered.He wanted the letter to be typed at once.This is bound to be found out.There are a lot of things to be done.She was too young to be assigned such work.2) 功用: 不定式可以作主语 (a), 宾语 (b), 表语 (c), 定语 (d) 或是状语 (e).a. To scold her would not be just.b. We are planning to build a reservoir here.c. One of our main tasks now is to mechanize agriculture.d. Do you have anything to declare?e. We have come to learn from you.3) 不带to 的不定式:a) 在“动词+ 宾语+不定式”结构中, 如果动词是表示感觉意义的see, hear, watch, smell, feel, notice等, 或是表示“致使”意义的 have, make, let等, 其后的不定式结构不带to.John made her tell him everything.这类结构转换为被动语态时, 后面的不带to 的不定式一般还原为带to 的不定式.She was made to tell him everything.b) 在 had better, had best, would rather, would sooner, would just as soon, might (just) as well, cannot but 等搭配之后, 动词不定式也不带to.I’d rather not have eggs and bacon for breakfast.They cannot but accept his term.c) 在make do, make believe, let drop, let fall, let fly, let slip, let drive, let go of, let there be, hear say, hear tell, leave go of等固定搭配中, 用不带to的动词不定式.John let fly a torrent of abuse at me.I’ve heard tell of him.d) 在动词help(或help +宾语)之后可用不带to的不定式, 也可用带to的不定式.Can I help (to) lift this heavy box?e) 在介词except, but 之后, 如果其前有动词do的某种形式, 不定式一般不带to, 反之带to.There is nothing to do except wait till it stops raining. Smith will do anything but work on a farm.There’s no choice but to wait till it stops raining.f) 连词 rather than, sooner than 置于句首时, 其后的不定式不带to.Rather than push the book back as he wanted to do, he forced himself to pick it up.出现在句中其他位置时, 其后的不定式有时带to, 有时不带to.He decided to write rather than telephone.The manager believes it is important to invest in new machinery rather than to increase wages.g) 用作补语的动词不定式, 如果主语是由“all + 关系分句”,“thing +关系分句”,“what分句”或“thing +不定式结构”等构成,并带有do的某种形式,这时,作为主语补语的不定式可以省to,也可以不省.What he will do is (to) spoil the whole thing.All you do now is complete the formThe only thing I can do now is go on by myself.The thing to do now is clear up this mess.The least I can do is drive everybody else closer to the issue.4) 不定式的其他用法a) too…to 结构通常表示否定意义:She was too young to understand all that.enough…to结构则表示肯定意义:She was not old enough to understand all that.not too, but too, all too, only too等和不定式连用时,不定式一般不表示否定意义:He’s only too pleased to help her.so…as (to)这种结构也可用不定式作状语:Be so kind as to drop in some time when you are free.b) 如果要说明不定是表示的动作是谁做的, 可以在不定式前加一个for引起的短语:It is not hard for one to do a bit of good.It is a great honour for us to be present at this rally.在以某些形容词(如 kind, good, nice, wise, unwise, clever, silly, wrong, right, foolish, stupid, careless, considerate, rude, naughty, impolite等)作表语时, 不定式前可加一个of引起的短语, 来说明不定式指的是谁的情况:It’s kind of you to think so much of us.(It is) Awfully good of you to come and meet us.It’s very nice of you to be so considerate.It’s unwise of them to turn down the proposal.相关内容: 四级语法精要-浓缩精华版(二)2.V+ing1) 形式a) 完成式: 如果要表示动名词代表的动作在谓语所表示的动作之前发生, 通常用动名词的完成形式.He didn’t mention having met me.I regret not having taken her advice.在某些动词后(或成语中), 常用(或可以用)动名词的一般形式, 尽管动作是在谓语所表示的动作之前发生的.Excuse me for coming late.I don’t remember everseeing him anywhere.现在分词的完成式主要用在状语中, 表示这动作在谓语所表示的动作之前发生.Having been there many times, he offered to be our guide. Having found the cause, they were able to propose a remedy.另外, 独立结构也可用现在分词的完成形式.The guests having left, they resumed their discussion.The children, having eating their fill, were allowed to leave the table.b) 被动式: 当一个动名词逻辑上的主语所表示的是这动作的对象时, 动名词一般要用被动形式.His being neglected by the host added to his uneasiness.He couldn’t bear being made fun of like that.但要注意, 在want, need, deserve, require 等动词后, 尽管表示的是被动的意思, 却用动名词的主动形式.My pen needs filling.The point deserves mentioning.This problem requires studying with great care.在worth这个形容词后情形也是这样.Her method is worth trying.现在分词的被动式可以用来作定语, 宾语补足语, 状语及用于独立结构中.This is one of the experiments being carried on in our laboratory.You’ll find the topic being discussed everywhere.Being asked to give a performance, she couldn’t very well refuse. These are sold at reduced prices, the defects always beingpointed out to the customers.c) 完成被动式: 如果表示的动作在谓语表示的动作之前发生, 有时需要用动名词的完成被动式.I don’t remember having ever been given a chance to try this method.但在多数情况下都避免使用这一形式, 而用一般被动形式代替, 以免句子显得累赘.现在分词的完成被动式一般用来作状语或用于独立结构中.Having been given such a good chance, how could she let it slip away?The decision having been made, the next problem was how to make a good plan.All the compositions having been written and collected, the teacher sent the students home.2) 句法功用a) 作主语:Walking is good exercise.It’s nice talking to you.There is no denying the fact that the new method has greatly raised labour productivity.b) 作宾语:Your shoes need polishing.You mustn’t delay sending the tractors over.He avoided giving us a definite answer.c) 作介词宾语: 动名词作介词宾语用的时候最多. 它常可以用在某些成语后面, 常见的有: insist on, persist in, think of, dream of, object to, suspect…of, accuse…of, charge…with, hear of, approve of, prevent…from, keep…from, stop…from, refrain from, be engaged in, look forward to, opposed to, depend on, thank…for, feel like, excuse…for, aim at, devote…to, set about, spend…in, get (be) used to, be fond of, be capable of, be afraid of, be tired of, be sick of, succeed in, be interested in, feel (be) ashamed of, be proud of, be keen on, be responsible for.d) 作表语:The real problem is getting to know the needs of the people. 动名词和不定式都可以作主语或表语. 一般说来, 在表示抽象的一般的行为时多用动名词; 在表示具体某词动作, 特别是将来的动作时, 多用不定式.e) 作宾语补足语: 分词可以在see, hear, notice, watch, feel, find, keep, get, have等动词后作宾语补足语.The words immediately set us all laughing.Once we caught him dozing off in class.His remark left me wondering what he was driving at.在see, hear, feel, watch, notice等动词后, 及可用现在分词, 也可用不定式构成宾语补足语. 用现在分词时, 表示动作正在发生, 用不定式时表示动作发生了.Do you hear someone knocking at the door?Yes, I did. I heard him knock three times.f) 作状语: 现在分词作状语时, 通常都表示主语正在进行的另一动作, 来对谓语表示的主要动作加以修饰或作为陪衬.I ran out of the house shouting.I got home, feeling very tired.Driving to Chicago that night, I was struck by a sudden thought. 现在分词短语有时可以用作状语表示原因, 相当于一个表示原因的状语从句.Not knowing her address, we couldn’t get in touch with her. Seeing nobody at home, she decided to leave them a note. Having already seen the film twice, she didn’t want to go to the cinema.现在分词短语有时可用作时间状语, 相当于when引起的从句: Seeing those pictures, he couldn’t help thinking of those memorable days they spent together.如果两个动作是完全同时发生的, 多用when 或while加分词这种结构.Be careful when crossing the street.When leaving the airport, they waved again and again to us. She got to know them while attending a conference in Beijing.3) 前面带有代词或名词的动名词结构: 一个动名词前面可以加一个物主代词(或名词的所有格结构), 来表示这个动名词逻辑上的主语. Their coming to help was a great encouragement to us.Our sole worry is your relying too much on yourself.Do you mind myreading your paper?They insisted on my staying there for supper.如果不是在句子开头, 这个结构常常可以用名词的普通格(或人称代词宾格), 这比用所有格更自然一些.I don’t mind him going.She hates people losing their temper.4) 只能用动名词作宾语的动词: suggest, finish, avoid, stop, can’t help, mind, admit, enjoy, leave off, require, postpone, put off, delay, practise, fancy, excuse, pardon, advise, consider, deny, endure, escape, miss5) 既可用动名词, 也可用不定式作宾语的动词: love, like, hate,dislike, begin, start, continue, intend, attempt, can’t bear, propose, want, need, remember, forget, regret, neglect, try, deserve, can’t afford等.有时两种结构之间意义差别不大, 有时却有不同的意思. 在remember, regret, want, try等词后差别是比较明显的.I remember seeing her once somewhere.I must remember to take my notebooks with me.I regret not having accepted your advice.I regret to say I haven’t given you enough help.She doesn’t want (need) to come.The house wants (needs) cleaning.We must try to get everything done in time.Let’s try doing the work some other way.6) 悬垂修饰: 分词作状语时, 表示的必须是主语的一个动作或状态. Walking through the park, we saw a lot of flowers. (walking 是we的动作, 正确)Walking through the park, the flowers looked very beautiful. (错误)Standing on the tower, we could see the whole city. (正确) Standing on the tower, the whole village could be seen. (错误)相关内容: 四级语法精要-浓缩精华版(二)3.分词1) 意义: 过去分词通常来自及物动词, 带有被动意义和完成意义; 而现在分词有的来自及物动词, 有的来自不及物动词, 通常带有主动意义和未完成意义.frozen food a freezing winda bored traveller a boring journeya lost cause a losing battlea conquered army a conquering armya finished article the last finishing touchthe spoken word a speaking birda closed shop the closing houra recorded talk a recording machine来自不及物动词的过去分词很少能单独用作前置修饰语, 能作这样用的仅限于下面几个词, 仅表示完成意义, 不表示被动意义.the risen sun, fallen leaves, faded/withered flowers, returned students, retired workers, departed friends, escaped prisoners, the vanished jewels, newly-arrived visitors用作后置修饰语的过去分词一般都带有修饰语或其他成分, 在意义上相当于关系分句.Most of the people invited to the reception were old friends.2) 句法作用a) 作定语: distinguished guest 贵宾, unknown heroes 无名英雄, armed forces武装部队, canned food罐头食品, boiled water开水, steamed bread馒头, stricken area灾区分词还可构成合成词作定语: simply-furnished room陈设简单的房间, clear-cut answer明确的答复, highly-developed industry高度发展的工业, heartfelt thanks衷心的感谢, hand-made goods手工制品, man-made satellite人造卫星b) 作补足语: 可以带过去分词作宾语补足语的动词有:see, hear, feel, find, think等表示感觉和心理状态的动词.I saw the students assembled in the hall.We found her greatly changed.make, get, have, keep等表示”致使”意义的动词:I have my hair cut every ten days.She got her bad tooth pulled out.Please keep us informed of the latest developments.like, want, wish, order等表示希望, 要求, 命令等意义的动词: I don’t want any of you (to be) involved in the scandal. He won’t like such questions (to be) discussed at the meeting.c) 过去分词短语常用作状语, 修饰谓语, 很多都说明动作发生的背景或情况.Guided by these principles, they went on with the work,Delighted with her work, they made her the general manager. 过去分词短语也可作状语表示原因, 相当于一个表示原因的状语从句.Influenced by his example, they performed countless good deeds. 有时也可说明动作发生的时间, 相当于一个表示时间的状语从句. This method, tried in areas near Shanghai, resulted in a marked rise in total production.间或也可表示一个假设的情况, 相当于一个条件从句.Given closer analysis, we can see this is totally wrong.偶尔也可用来代替一个“让步”状语从句.Picked 20 years a year, it grows tired only after 40 or 50 years. 相关内容: 四级语法精要-浓缩精华版(二)。
2018英语专四真题 词汇语法部分 超详细高质量真题解析
PART III LANGUAGE USAGEThere are twenty sentences in this section. Beneath each sentence there are four options marked A B C and D. Choose the one that best completes the sentence or answers the question. Mark hour answers on ANSWER SHEET TWO.11. The Bent Pyramid outsi de Cairo __________ ancient Egypt’s first attempt to build a smooth-sided pyramid.A. has been believed to have beenB. was believed to beC. is believed to have beenD. is believed to beTo have done【解析】本题考查非谓语动词中不定式的用法,属于专四语法高频考点,考点拓展:不定式的完成时to have done表示三种意思,第一,跟在表示情感类的词后,比如sorry happy blessed。
第二,跟在表示观点的谓语动词,比如is said/ thought/believed to have done 第三,跟在表示推断类的谓语动词之后seem/appear等。
本题意思:据说开罗外的金字塔是古代埃及人的一次尝试,尝试建立一个smooth-sided金字塔。
is believed to have been 为什么是is believed 这里表示现在人们也是这么认为,所以is believed 用的是现在时态,to have been 表示“尝试”这个动作发生的时态在被认为之前,当然是古老的埃及人们做了这个尝试之后,才有后来的人们的“据说”。
【最新2018】四级英语语法之从句-实用word文档 (3页)
本文部分内容来自网络整理,本司不为其真实性负责,如有异议或侵权请及时联系,本司将立即删除!== 本文为word格式,下载后可方便编辑和修改! ==四级英语语法之从句在英语语法中,让步状语从句只是状语从句中比较典型的一个小分支,而状语从句也只不过是庞大的从句体系的冰山一角。
本期语法讲解将带领大家回顾纷繁复杂的英语从句体系!从句的定义:从句(Subordinate Clause)是一个特殊句子,不能单独成句,但也有主语部分和谓语部分,从句须由一个关联词(connective)引导。
如何理解上面的定义呢?其实这很简单。
“从句”的“从”(subordinate),意思就是从属,附属;“句”就是指“句子”,那“从句”,顾名思义,就是“从属的句子”嘛。
这里给大家打个不太恰当的比方。
大家应该听说过澳洲的袋鼠。
小袋鼠在一岁之前,必须借居在母袋鼠的袋子里才能存活。
“从句”就像是不满一岁的小袋鼠,要依附于主句,在主句的保护下,才有存在的意义。
从句的分类:根据从句在句子中的作用,从句可以分为以下几种:名词性从句:从句在主句中的成分相当于名词,又被称为名词从句;形容词性从句:从句在主句中的成分相当于形容词;起到限定修饰的作用,因而,又被称为定语从句;副词性从句:从句在主句中的成分相当于副词,作状语,因而,又被称为状语从句。
1. 名词性从句(名词从句)根据从句在主句中所做的成分,名词性从句可以分为以下4种:例如:(1)That the seas are being overfished has been known for years.海洋正在被人们过渡捕捞,许多年来这已是尽人皆知的事情了。
(2)I have learned that love, not time, heals all wounds.我明白了是爱,而不是时间能治愈一切创伤。
(3)The reason for my return is that I left my keys behind.我又回来,是因为我忘带钥匙了。
2018年大学英语四级语法精要
大学英语四级语法精要Ⅰ动词(时态,语态,用法,省略,一致性等)1. 时态1)现在完成进行时态(have/has been + -ing 分词构成): 动作或状态从过去某时开始,继续到现在,可能继续下去,也可能刚刚结束.I’ve been writing letters for an hour.I’ve been sitting in the garden.2)过去完成进行时(由had been + ing分词构成): 过去某个时刻以前一直在进行的动作I’d been working f or some time when he called.We had been waiting for her for two hours by the time she came.3)将来完成进行时: 将来某个时刻以前一直在进行的动作.By next summer, he will have been working here for twenty years.In another month’s time she’ll have been studying here for three yea rs.4)将来完成时(由shall/will have + 过去分词构成): 将来某时会业已发生的事.I shall have finished this one before lunch.They’ll have hit the year’s target by the end of October.2. 语态1) 可以有两种被动结构的类型,例如:He was said to be jealous of her success.It was said that he was jealous of her success.能同时适用于上述两个句型的主动词通常都是表示“估计”,“相信”等意义的动词,常见的有assume,believe,expect,fear,feel,know,presume,report,say,suppose,underst and等.It is supposed that the ship has been sunk.The ship is supposed to have been sunk.担当be supposed to 与不定式的一般形式搭配时往往表示不同的意义.例如:Why are you driving so fast in this area? You are supposed to know the speed to know the speed limit. (你应该晓得速度限制)2) 双宾语及宾补结构的被动语态a) 双宾语结构的被动语态: 双宾语结构变为被动语态时,可以把主动结构中的一个宾语变为主语,另一个宾语仍然保留在谓语后面,但多数是把间接宾语变为主语.He was asked a number of questions at the press conference.Two days were allowed them for making the necessary preparations.b) 宾补结构的被动语态:She was called Big Sister by everybody.Then he was made a squad leader.He was considered quite qualified for the job.The room was always kept clean and tidy.3. 短语动词1) Vi + advThe plane took off two hours late.2) Vi + prepThey looked round the Cathedral.3) Vi + prep (有被动语态)She’s looking after her sister’s children.The children were always well looked after.4) Vi + adv + prepI began to look forward to their visits.5) Vt + O + advSome women choose to stay at home and bring up their children.The children were brought up by their mother.They took him on.6) Vt + adv + O (无被动语态)I am trying to give up smoking.7) Vt + O + prepWe talked Donald into agreement.4. 省略1) 在以as, than, when, if, unless等引导的从句中的省略: 在有些状语从句中,如果谓语包含有动词be,主语又和主句的主语一致a),或者主语是it b),就常常可以把从句中的主语和谓语的一部分(特别是动词be)省略掉.a) Look out for cars when crossing the street.When taken according to the directions, the drug has no side effects. While there he joined in voluntary labour on a project.Although not yet six months old, she was able to walk without support.If not well managed, irrigation can be harmful.Though reduced in numbers, they gained in fighting capacity.This viewpoint, however understandable, is wrong.Enemies, once discovered, were tightly encircled and completely wiped out.She hurriedly left the room as though/if angry.She worked extremely hard though still rather poor in health.Fill in the application as instructed.Whenever known, such facts should be reported.The documents will be returned as soon as signed.He said that no acrobat could ever perform those daring feats unless trained very young.Once having made a promise, you should keep it.b) If necessary I’ll have the letter duplicated.Fill in the blanks with articles where(ver) necessary.If possible, I should like to have two copies of it.As scheduled, they met on January 20 at the Chinese Embassy.2)在以than a) 或as b) 引起的从句中,常会有一些成分省略. a) He told me not to use more material than (it is) necessary.We should think more of the collective than of ourselves.b) They worked with as much enthusiasm as young people (did).He is now a vice-manager, but still often works in the kitchen as before. Their training is free, as is all education.We will, as always, stand on your side.3)错误的省略His life is as fully committed to books as anyone I know.While standing there in her nightgown, two bullets struck the wall beside her.5. 一致1) 如果主语是单数,尽管后面跟有with, together with, as well as, as much as, no less than, more than等引导的短语,谓语动词仍旧用单数形式.Terry, along with her friend, goes skating every Saturday.An expert, together with some assistants, was sent to help in this work. The captain, as well as the coaches, was disappointed in the team.2) 代词作主语时的一致a) each, either, neither和由some, any, no, every构成的复合代词,都作单数看待.Each of us has something to say.Is everybody ready?Somebody is using the phone.Neither of us has gone through regular training.Has either of them told you?b) some, few, both, many 等作复数c) some 可后接复数,也可接单数,表示某一.none作复数看待时较多,但也有时作单数看待,主要看说话人脑中联系想到的是复数还是单数概念, 但none 在代表不可数的东西时总是看作单数:None of the books are easy enough for usNone of us seem to have thought of it.None (= not a single one) of us has got a camera.None (= nobody) has felt it more keenly than she did.None of this worries me.all 和most 可后接复数,也可接不可数名词(all of the…, most of the …), 动词用单数.3) 由and 或both…and 连接名词词组时, 后用复数; 由not only…but (also), either…or, neither…nor或or 连接的并列主语, 谓语通常和最邻近的主语一致.Not only the switches but also the old writing has been changed.My sister or my brother is likely to be at home.Either you or Mr Yang is to do the work.Neither my wife nor I myself am able to persuade my daughter to changeher mind.如果一个句子是由there 或here引导, 而主语又不止一个, 谓语通常也和最邻近的那个主语一致.There was carved in the board a dragon and a phoenix.Here is a pen, a few envelopes and some paper for you.4) people, police, cattle, poultry (家禽), militia (民兵) 等通常都用作复数.Cattle are grazing on the pasture.The police are looking for him.有些集体名词有时作单数看待, 有时作复数看待, 主要根据意思来决定.His family isn’t very large.His family are all music lovers.The committee meets twice a month.The committee are divided in opinion.The audience was enormous.The audience were greatly moved at the words.有些名词单复数同形, 可根据意思决定谓语动词的数:This new series is beginning next month.These new series are beginning next month.This species is now extinct.These species are now extinct.5) 表示时间, 重量, 长度, 价值等的名词, 尽管仍是复数形式, 如果作整体看待, 动词也可用单数形式(当然用复数动词也是可以的): Three weeks was allowed for making the necessary preparations.One hundred li was covered in a single night.6) 其他问题a) 书名, 国家名用单数:Tales from Shakespeare is a book by Charles Lamb.b) 学科名, 如mathematics, economics用单数.c) many a 或more than one 所修饰的词作主语时, 谓语动词多用单数形式:Many a person has had that kind of experience.More than one person has involved in the case.a number of 后接复数, the number of后接单数:A number of books have been published on the subject.The number of books published on the subject is simply amazing.d) one of those 后用单数. 在“one of + 复数名词+关系分句”结构中,关系分句中谓语动词的单复数形式在一般情况下有两形式,一是根据先行词采用复数形式:Joan is one of those people who go out of their way to be helpful.当one 之前友the only 等限定词和修饰语时,关系分句谓语动词根据one 而定,即采用单数形式:He is the only one of those boys who is willing to take on another assignment.Ⅱ非谓语动词1. 不定式1) 形式主动形式被动形式一般式to do to be done完成式to have done to have been done进行式to be doing完成进行式to have been doinga) 完成式: 不定式的一般形式所表示的动作, 通常与主要谓语表示的动作(状态)同时(或几乎同时)发生, 或是在它之后发生. 假如不定式所表示的动作, 在谓语所表示的动作(状态)之前发生, 就要用不定式的完成式.I am glad to have seen your mother (= I am glad I have seen your mother).(比较: I am glad to see you.)He is said to have written a new book about workers.He pretended not to have seen me.b) 进行式: 如果主要谓语表示的动作(状态)发生时, 不定式表示的动作正在进行, 这时要用不定式的进行式.You are not supposed to be working. You haven’t quite recovered yet.We didn’t expect you to be waiting for us here.He pretended to be listening attentively.c) 完成进行式: 在谓语所表示的时间之前一直进行的动作, 就要用不定式的完成进行式.The struggle was known to have been going for twenty years.We are happy to have been working with you.d) 被动式: 当不定式的逻辑上的主语是不定式所表示的动作的承受者时, 不定式一般要用被动形式.It is an honour for me to be asked to speak here.She hated to be flattered.He wanted the letter to be typed at once.This is bound to be found out.There are a lot of things to be done.She was too young to be assigned such work.2) 功用: 不定式可以作主语(a), 宾语(b), 表语(c), 定语(d) 或是状语(e).a. To scold her would not be just.b. We are planning to build a reservoir here.c. One of our main tasks now is to mechanize agriculture.d. Do you have anything to declare?e. We have come to learn from you.3) 不带to 的不定式:a) 在“动词+ 宾语+不定式”结构中, 如果动词是表示感觉意义的see, hear, watch, smell, feel, notice等, 或是表示“致使”意义的have, make, let等, 其后的不定式结构不带to.John made her tell him everything.这类结构转换为被动语态时, 后面的不带to 的不定式一般还原为带to 的不定式.She was made to tell him everything.b) 在had better, had best, would rather, would sooner, would just as soon, might (just) as well, cannot but 等搭配之后, 动词不定式也不带to.I’d rather not have eggs and bacon for breakfast.They cannot but accept his term.c) 在make do, make believe, let drop, let fall, let fly, let slip, let drive, let go of, let there be, hear say, hear tell, leave go of等固定搭配中, 用不带to的动词不定式.John let fly a torrent of abuse at me.I’ve heard tell of him.d) 在动词help(或help +宾语)之后可用不带to的不定式, 也可用带to 的不定式.Can I help (to) lift this heavy box?e) 在介词except, but 之后, 如果其前有动词do的某种形式, 不定式一般不带to, 反之带to.There is nothing to do except wait till it stops raining.Smith will do anything but work on a farm.There’s no choice but to wait till it stops raining.f) 连词rather than, sooner than 置于句首时, 其后的不定式不带to. Rather than push the book back as he wanted to do, he forced himself to pick it up.出现在句中其他位置时, 其后的不定式有时带to, 有时不带to.He decided to write rather than telephone.The manager believes it is important to invest in new machinery rather than to increase wages.g) 用作补语的动词不定式, 如果主语是由“all + 关系分句”,“thing +关系分句”,“what分句”或“thing +不定式结构”等构成,并带有do的某种形式,这时,作为主语补语的不定式可以省to,也可以不省.What he will do is (to) spoil the whole thing.All you do now is complete the formThe only thing I can do now is go on by myself.The thing to do now is clear up this mess.The least I can do is drive everybody else closer to the issue.4) 不定式的其他用法a) too…to 结构通常表示否定意义:She was too young to understand all that.enough…to结构则表示肯定意义:She was not old enough to understand all that.not too, but too, all too, only too等和不定式连用时,不定式一般不表示否定意义:He’s only too pleased to help her.so…as (to)这种结构也可用不定式作状语:Be so kind as to drop in some time when you are free.b) 如果要说明不定是表示的动作是谁做的, 可以在不定式前加一个for引起的短语:It is not hard for one to do a bit of good.It is a great honour for us to be present at this rally.在以某些形容词(如kind, good, nice, wise, unwise, clever, silly, wrong, right, foolish, stupid, careless, considerate, rude, naughty, impolite等)作表语时, 不定式前可加一个of引起的短语, 来说明不定式指的是谁的情况:It’s kind of you to think so much of us.(It is) Awfully good of you to come and meet us.It’s very nice of you to be so considerate.It’s unwise of them to turn down the proposal.2. V+ing形式(现在分词及动名词)1) 形式a) 完成式: 如果要表示动名词代表的动作在谓语所表示的动作之前发生, 通常用动名词的完成形式.He didn’t mention having met me.I regret not having taken her advice.在某些动词后(或成语中), 常用(或可以用)动名词的一般形式, 尽管动作是在谓语所表示的动作之前发生的.Excuse me for coming late.I don’t remember ever seeing him an ywhere.现在分词的完成式主要用在状语中, 表示这动作在谓语所表示的动作之前发生.Having been there many times, he offered to be our guide.Having found the cause, they were able to propose a remedy.另外, 独立结构也可用现在分词的完成形式.The guests having left, they resumed their discussion.The children, having eating their fill, were allowed to leave the table.b) 被动式: 当一个动名词逻辑上的主语所表示的是这动作的对象时, 动名词一般要用被动形式.His being neglected by the host added to his uneasiness.He couldn’t bear being made fun of like that.但要注意, 在want, need, deserve, require 等动词后, 尽管表示的是被动的意思, 却用动名词的主动形式.My pen needs filling.The point deserves mentioning.This problem requires studying with great care.在worth这个形容词后情形也是这样.Her method is worth trying.现在分词的被动式可以用来作定语, 宾语补足语, 状语及用于独立结构中.This is one of the experiments being carried on in our laboratory.You’ll find the topic being discussed everywhere.Being asked to give a performance, she couldn’t very well refuse.These are sold at reduced prices, the defects always being pointed out to the customers.c) 完成被动式: 如果表示的动作在谓语表示的动作之前发生, 有时需要用动名词的完成被动式.I don’t remember having ever been given a chance to try this method.但在多数情况下都避免使用这一形式, 而用一般被动形式代替, 以免句子显得累赘.现在分词的完成被动式一般用来作状语或用于独立结构中.Having been given such a good chance, how could she let it slip away? The decision having been made, the next problem was how to make a good plan.All the compositions having been written and collected, the teacher sent the students home.2) 句法功用a) 作主语:Walking is good exercise.It’s nice talking to you.There is no denying the fact that the new method has greatly raised labour productivity.b) 作宾语:Your shoes need polishing.You mustn’t delay sending the tractors over.He avoided giving us a definite answer.c) 作介词宾语: 动名词作介词宾语用的时候最多. 它常可以用在某些成语后面, 常见的有: insist on, persist in, think of, dream of, object to, suspect…of, accuse…of, charge…with, hear of, approve of, prevent…from, keep…from, stop…from, refrain from, be engaged in, look forward to, opposed to, depen d on, thank…for, feel like, excuse…for, aim at, devote…to, set about, spend…in, get (be) use d to, be fond of, be capable of, be afraid of, be tired of, be sick of, succeed in, be interested in, feel (be) ashamed of, be proud of, be keen on, be responsible for.d) 作表语:The real problem is getting to know the needs of the people.动名词和不定式都可以作主语或表语. 一般说来, 在表示抽象的一般的行为时多用动名词; 在表示具体某词动作, 特别是将来的动作时, 多用不定式.e) 作宾语补足语: 分词可以在see, hear, notice, watch, feel, find, keep, get, have等动词后作宾语补足语.The words immediately set us all laughing.Once we caught him dozing off in class.His remark left me wondering what he was driving at.在see, hear, feel, watch, notice等动词后, 及可用现在分词, 也可用不定式构成宾语补足语. 用现在分词时, 表示动作正在发生, 用不定式时表示动作发生了.Do you hear someone knocking at the door?Yes, I did. I heard him knock three times.f) 作状语: 现在分词作状语时, 通常都表示主语正在进行的另一动作, 来对谓语表示的主要动作加以修饰或作为陪衬.I ran out of the house shouting.I got home, feeling very tired.Driving to Chicago that night, I was struck by a sudden thought.现在分词短语有时可以用作状语表示原因, 相当于一个表示原因的状语从句.Not knowing her address, we couldn’t get in touch with her.Seeing nobody at home, she decided to leave them a note.Having already seen the film twice, she didn’t want to go to the cinema.现在分词短语有时可用作时间状语, 相当于when引起的从句: Seeing those pictures, he couldn’t help thinking of those memorable days they spent together.如果两个动作是完全同时发生的, 多用when 或while加分词这种结构.Be careful when crossing the street.When leaving the airport, they waved again and again to us.She got to know them while attending a conference in Beijing.3) 前面带有代词或名词的动名词结构: 一个动名词前面可以加一个物主代词(或名词的所有格结构), 来表示这个动名词逻辑上的主语. Their coming to help was a great encouragement to us.Our sole worry is your relying too much on yourself.Do you mind my reading your paper?They insisted on my staying there for supper.如果不是在句子开头, 这个结构常常可以用名词的普通格(或人称代词宾格), 这比用所有格更自然一些.I don’t mind him going.She hates people losing their temper.4) 只能用动名词作宾语的动词: suggest, finish, avoid, stop, can’t help, mind, admit, enjoy, leave off, require, postpone, put off, delay, practise, fancy, excuse, pardon, advise, consider, deny, endure, escape, miss5) 既可用动名词, 也可用不定式作宾语的动词: love, like, hate,dislike, begin, start, continue, intend, attempt, can’t bear, propose, want, need, remember, forget, regret, neglect, try, deserve, can’t afford等.有时两种结构之间意义差别不大, 有时却有不同的意思. 在remember, regret, want, try等词后差别是比较明显的.I remember seeing her once somewhere.I must remember to take my notebooks with me.I regret not having accepted your advice.I regret to say I haven’t given you enough help.She doesn’t want (need) to come.The house wants (needs) cleaning.We must try to get everything done in time.Let’s try doing the work some other way.6) 悬垂修饰: 分词作状语时, 表示的必须是主语的一个动作或状态. Walking through the park, we saw a lot of flowers. (walking是we的动作, 正确)Walking through the park, the flowers looked very beautiful. (错误)Standing on the tower, we could see the whole city. (正确)Standing on the tower, the whole village could be seen. (错误)3. 分词1) 意义: 过去分词通常来自及物动词, 带有被动意义和完成意义; 而现在分词有的来自及物动词, 有的来自不及物动词, 通常带有主动意义和未完成意义.frozen food a freezing winda bored traveller a boring journeya lost cause a losing battlea conquered army a conquering armya finished article the last finishing touchthe spoken word a speaking birda closed shop the closing houra recorded talk a recording machine来自不及物动词的过去分词很少能单独用作前置修饰语, 能作这样用的仅限于下面几个词, 仅表示完成意义, 不表示被动意义.the risen sun, fallen leaves, faded/withered flowers, returned students, retired workers, departed friends, escaped prisoners, the vanished jewels, newly-arrived visitors用作后置修饰语的过去分词一般都带有修饰语或其他成分, 在意义上相当于关系分句.Most of the people invited to the reception were old friends.2) 句法作用a) 作定语: distinguished guest 贵宾, unknown heroes 无名英雄, armed forces武装部队, canned food罐头食品, boiled water开水, steamed bread馒头, stricken area灾区分词还可构成合成词作定语: simply-furnished room陈设简单的房间, clear-cut answer明确的答复, highly-developed industry高度发展的工业, heartfelt thanks衷心的感谢, hand-made goods手工制品, man-made satellite人造卫星b) 作补足语: 可以带过去分词作宾语补足语的动词有:see, hear, feel, find, think等表示感觉和心理状态的动词.I saw the students assembled in the hall.We found her greatly changed.make, get, have, keep等表示”致使”意义的动词:I have my hair cut every ten days.She got her bad tooth pulled out.Please keep us informed of the latest developments.like, want, wish, order等表示希望, 要求, 命令等意义的动词:I don’t want any of you (to be) involved in the scandal.He won’t like such questions (to be) discussed at the meeting.c) 过去分词短语常用作状语, 修饰谓语, 很多都说明动作发生的背景或情况.Guided by these principles, they went on with the work,Delighted with her work, they made her the general manager.过去分词短语也可作状语表示原因, 相当于一个表示原因的状语从句.Influenced by his example, they performed countless good deeds.有时也可说明动作发生的时间, 相当于一个表示时间的状语从句. This method, tried in areas near Shanghai, resulted in a marked rise in total production.间或也可表示一个假设的情况, 相当于一个条件从句.Given closer analysis, we can see this is totally wrong.偶尔也可用来代替一个“让步”状语从句.Picked 20 years a year, it grows tired only after 40 or 50 years.d) 独立结构: 在用分词短语作状语时, 它逻辑上的主语一般必须与句子的主语一.致. 但有时它也可以有自己独立的逻辑上的主语, 这种结构称为独立结构, 一般表示一种伴随的动作或情况.He rushed into the room, his face covered with sweat.有时可以表示时间:Late that autumn, his work finished, he prepared to return to his institute.表示原因:Her eyes dimmed with tears, she did not see him enter.条件:All things considered, her paper is of greater value than yours.Ⅲ虚拟语气1. that从居中:1) wish, would rather (sooner), had better:I wish I were as strong as you.I wish I had paid more attention to our pronunciation.I wish I remembered the address.I would rather they came tomorrow (you had gone there too).I had rather (that) you told him than I did.2) suggest, order, demand, propose, command, request, desire, insist 等动词后的宾语从句:The commander ordered that all civilians (should) be evacuated.He asked that he be given an opportunity to try.She urged that he write and accept the post.3) it is desired, it is suggested, it is requested, it was ordered, it was proposed, it is necessary, it is important, it has been decided 等结构后的主语从句中.It was arranged that they leave the following weekIt will be better that we meet some other time.4) suggestion, motion, proposal, order, recommendations, plan, idea等后面的表语从句和同位语从句:His sole requirement is (was) that thy system be adjusted.2. 在某些句型中1) it is time thatIt is time that we went (或should go) to bed.It is high time we (should) put an end to this controversy.2) as if (though) 引起的从句:They talked (are talking) as if they had been friends for years.It seems as if it was (were) spring today.He acts (acted) as if (though) he were (was) an expert.3) 以lest, for fear that 和in case 引起的从句(这时谓语多用should +动词原形):He took his raincoat with him lest it should rain.He put his coat over the child for fear that (或lest) he should catch cold. I’ll keep a seat for you in case you should need it.4) 以whatever, whoever, no matter what这类代词或词组引起的从句(这时, 谓语多用may加动词原形构成):Whatever defects he may have, he is an honest man.Come what may, we will go ahead. 不管发生什么情况, 我们都要干下去.I accept that he is old and frail; be that as it may, he’s still a good politician.我承认他年老体衰, 然而尽管如此, 它仍是优秀的政治家.3. 条件句1) 虚拟条件句主要有下面两类:a) 表示现在及将来情况(表示纯然假设或实现的可能性不大的情况): 谓语主要形式如下(be多用were这个形式):从句主句过去式would + 动词原形If I were you, I wouldn’t lose heart.How nice it would be if you could stay a bit longer.b) 表示过去情况的虚拟条件句(与事实完全相反的假设情况), 谓语主要形式如下:从句主句had + 过去分词would have + 过去分词She would have come if we had invited her.If I hadn’t taken your advice, I would have made a bad mistake,You wouldn’t have caught cold if you had put on more clothes.2) 有时候, 条件从句表示的动作和主句表示的动作, 发生的时间是不一致的(如一个是过去发生的, 一个是现在发生的). 这时, 动词的形式要根据表示的时间来调整. 这种句子可以称为错综时间条件句. If he had received six more votes, he would be our chairman now.If we hadn’t got everything ready by now, we should be having a terrible time tomorrow.3) 有时假设的情况并不以条件从句表示, 而是通过一个介词短语来表示.Without music, the world would be a dull place.We could have done better under more favorable conditions.That would have been considered miraculous in the past.But for the storm, we should have arrived earlier.4) 如果条件句从句中包含有were, had, should 或could, 有时可把if 省略掉, 并把were, had, should或could放在主语前面.Had we made adequate preparation, we might have succeeded.Should there be a flood, what should we do?Were it not for their assistance, we would be in serious difficulty.Ⅳ介词1. 合成介词和复杂介词1) 合成介词: inside, into, onto, out of, outside, throughout, upon within, without2) 复杂介词: according to, along with, apart from, as for, as to, because of, by means of, in front of, in spite of, instead of, in accordance with, on account of, on behalf of, owing to, due to, together with, up to, with regard to, prior to等2. 介词在句末:This is what he is interested in.Does everyone has a seat to sit on?3. 名词加介词( n + prep)1) 某些名词之后要求用某些介词: solution to, faith in, glance at, need for2) 某些名词之前要求用某些介词: on one’s guard, at one’s request, in all probability, to my delight4. 动词加介词1) Vi + prep: prevail on, appeal to, fall into, apply for, touch upon2) Vt + O + prep: lay emphasis on, take advantage of等3) Vi + adv + prep:I don’t wish to break in on your thoughts.The family came up against fresh problems.You’re not telling me the whole story. You’re holding out on me.She got off with him soon after she began to work at the institution.4) Vt + O + adv +prep:You shouldn’t take your resentment out on me.We shouldn’t put the shortage down to bad planning.5. 形容词加介词about --- anxious, careful, careless, certain, considerate, enthusiastic, guilty, happy, mad, particular, sad, sure, timid, unhappy, etcat --- awkward, bad, clever, disappointed, disgusted, good, marvellous, quick, skilful, skilled, useless, weak, etcfor --- convenient, eligible, grateful, homesick, hungry, necessary, noted, perfect, responsible, etcfrom --- evident, exempt, inseparable, safe, tired, etcin --- deficient, expert, liberal, quick, rich, successful, weak, etcof --- apprehensive, characteristic, critical, destructive, envious, hard, inconsiderate, impatient, dependent, jealous, positive, scared, sensible, short, sick, suspicious, typical, worthy, etcon --- dependent, keen, intent, etcto --- acceptable, accessible, agreeable, alive, attentive, blind, comparable, courteous, deaf, destructive, essential, favourable, hostile, indifferent, married, obedient, parallel, preferable, related, responsible, sensitive, suitable, unjust, etcwith --- awkward, bored, careful, disappointed, generous, identical, ill, impatient, popular, sick, wrong, etcⅤ连词1. 并列连词1) 表示意义的引申: and, both…and, not only…but(also), as well as, and …as well, neither…nor2) 表示选择: or, either…or3) 表示转折: but, while, whereas, yet, however/nevertheless(也可认为是副词)4) 表示因果: for, so, therefore, hence2. 从属连词1) 表示时间: when, while, as, after, before, since, until(till), as soon as, once2) 表示原因: because, as, since, now that, seeing that3) 表示条件: if, unless, in case, provided(that), suppose, as long as, on condition (that),4) 表示其他关系: (al)though, than, as/so…as, lest, in order that, so…thatⅥ定语从句1. 限制和非限制性定语从句: 限制性定语从句是名词词组不可缺少的一个组成部分, 去掉了会造成病句或意义不明确; 非限制性定语从句属于补充说明性质, 去掉了不会影响主要意义, 通常用逗号与它的先行词分开.The boys who wanted to play football were disappointed when it rained. The boys, who wanted to play football, were disappointed when it rained.如果定语从句的先行词是专有名词, 或是带有形容词性物主代词(my, his, etc)或形容词性指示代词(this, that, etc)作限定词, 其后的定语从句通常都是非限制性的:Mary Smith, who is in the corner, wants to meet you.Her mother, who had long suffered form arthritis, died last night.All these books, which have been donated by visiting professors, are to be used by the postgraduates.在非限制性定语从句中只能用who/whom指人, 用which指物,通常不用that替代.My father, who had been on a visit to America, returned yesterday.All the books, which had pictures in them, were sent to the little girl.2. 定语从句的引导词1) that, who, whom: 非限制性定语从句, 如果修饰人, 一般用who, 有时用that (作主语时用who较多). 如果关系代词在从句中作宾语, 就应当用宾格whom 或that, 但在大多数情况下都可以省略掉, 在口语中可用who代替whom.Here is the man (whom) you’ve been looking for.He is a man (that) you can safely depend on.The people (who/that) you were talking to were Swedes.There are some people here who I want you to meet.但在介词后只能用whom:This is the man to whom I referred.但在口语中一般都把介词放到句子后面去, 这时可用that, 但省略时更多一些.Have you met the person about whom he was speaking?Have you met the person (that) he was speaking aboutThe girl to whom I spoke is my cousin.The girl (who/that) I spoke to is my cousin.2) 限制性定语从句如果修饰“物”, 用关系代词that的时候较多, 也有时用which.. 当这个代词在从句中是用作宾语时, 在绝大多数情况下都是省略的, 特别是口语中(尤其是当被修饰的词是all, everything 等词时):Have you everything you need?(Is there) anything I can do for you?All you have to do is to press the button.在介词后只能用which, 在口语中一般都把介词放到从句后部去, 这时可以用that, 但省略的时候更多一些:The tool with which he is working is called a wrench.。
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大学英语四级语法精要Ⅰ动词(时态,语态,用法,省略,一致性等)1. 时态1)现在完成进行时态(have/has been + -ing 分词构成): 动作或状态从过去某时开始,继续到现在,可能继续下去,也可能刚刚结束.I’ve been writing letters for an hour.I’ve been sitting in the garden.2)过去完成进行时(由had been + ing分词构成): 过去某个时刻以前一直在进行的动作I’d been working f or some time when he called.We had been waiting for her for two hours by the time she came.3)将来完成进行时: 将来某个时刻以前一直在进行的动作.By next summer, he will have been working here for twenty years.In another month’s time she’ll have been studying here for three yea rs.4)将来完成时(由shall/will have + 过去分词构成): 将来某时会业已发生的事.I shall have finished this one before lunch.They’ll have hit the year’s target by the end of October.2. 语态1) 可以有两种被动结构的类型,例如:He was said to be jealous of her success.It was said that he was jealous of her success.能同时适用于上述两个句型的主动词通常都是表示“估计”,“相信”等意义的动词,常见的有assume,believe,expect,fear,feel,know,presume,report,say,suppose,underst and等.It is supposed that the ship has been sunk.The ship is supposed to have been sunk.担当be supposed to 与不定式的一般形式搭配时往往表示不同的意义.例如:Why are you driving so fast in this area? You are supposed to know the speed to know the speed limit. (你应该晓得速度限制)2) 双宾语及宾补结构的被动语态a) 双宾语结构的被动语态: 双宾语结构变为被动语态时,可以把主动结构中的一个宾语变为主语,另一个宾语仍然保留在谓语后面,但多数是把间接宾语变为主语.He was asked a number of questions at the press conference.Two days were allowed them for making the necessary preparations.b) 宾补结构的被动语态:She was called Big Sister by everybody.Then he was made a squad leader.He was considered quite qualified for the job.The room was always kept clean and tidy.3. 短语动词1) Vi + advThe plane took off two hours late.2) Vi + prepThey looked round the Cathedral.3) Vi + prep (有被动语态)She’s looking after her sister’s children.The children were always well looked after.4) Vi + adv + prepI began to look forward to their visits.5) Vt + O + advSome women choose to stay at home and bring up their children.The children were brought up by their mother.They took him on.6) Vt + adv + O (无被动语态)I am trying to give up smoking.7) Vt + O + prepWe talked Donald into agreement.4. 省略1) 在以as, than, when, if, unless等引导的从句中的省略: 在有些状语从句中,如果谓语包含有动词be,主语又和主句的主语一致a),或者主语是it b),就常常可以把从句中的主语和谓语的一部分(特别是动词be)省略掉.a) Look out for cars when crossing the street.When taken according to the directions, the drug has no side effects. While there he joined in voluntary labour on a project.Although not yet six months old, she was able to walk without support.If not well managed, irrigation can be harmful.Though reduced in numbers, they gained in fighting capacity.This viewpoint, however understandable, is wrong.Enemies, once discovered, were tightly encircled and completely wiped out.She hurriedly left the room as though/if angry.She worked extremely hard though still rather poor in health.Fill in the application as instructed.Whenever known, such facts should be reported.The documents will be returned as soon as signed.He said that no acrobat could ever perform those daring feats unless trained very young.Once having made a promise, you should keep it.b) If necessary I’ll have the letter duplicated.Fill in the blanks with articles where(ver) necessary.If possible, I should like to have two copies of it.As scheduled, they met on January 20 at the Chinese Embassy.2)在以than a) 或as b) 引起的从句中,常会有一些成分省略. a) He told me not to use more material than (it is) necessary.We should think more of the collective than of ourselves.b) They worked with as much enthusiasm as young people (did).He is now a vice-manager, but still often works in the kitchen as before. Their training is free, as is all education.We will, as always, stand on your side.3)错误的省略His life is as fully committed to books as anyone I know.While standing there in her nightgown, two bullets struck the wall beside her.5. 一致1) 如果主语是单数,尽管后面跟有with, together with, as well as, as much as, no less than, more than等引导的短语,谓语动词仍旧用单数形式.Terry, along with her friend, goes skating every Saturday.An expert, together with some assistants, was sent to help in this work. The captain, as well as the coaches, was disappointed in the team.2) 代词作主语时的一致a) each, either, neither和由some, any, no, every构成的复合代词,都作单数看待.Each of us has something to say.Is everybody ready?Somebody is using the phone.Neither of us has gone through regular training.Has either of them told you?b) some, few, both, many 等作复数c) some 可后接复数,也可接单数,表示某一.none作复数看待时较多,但也有时作单数看待,主要看说话人脑中联系想到的是复数还是单数概念, 但none 在代表不可数的东西时总是看作单数:None of the books are easy enough for usNone of us seem to have thought of it.None (= not a single one) of us has got a camera.None (= nobody) has felt it more keenly than she did.None of this worries me.all 和most 可后接复数,也可接不可数名词(all of the…, most of the …), 动词用单数.3) 由and 或both…and 连接名词词组时, 后用复数; 由not only…but (also), either…or, neither…nor或or 连接的并列主语, 谓语通常和最邻近的主语一致.Not only the switches but also the old writing has been changed.My sister or my brother is likely to be at home.Either you or Mr Yang is to do the work.Neither my wife nor I myself am able to persuade my daughter to changeher mind.如果一个句子是由there 或here引导, 而主语又不止一个, 谓语通常也和最邻近的那个主语一致.There was carved in the board a dragon and a phoenix.Here is a pen, a few envelopes and some paper for you.4) people, police, cattle, poultry (家禽), militia (民兵) 等通常都用作复数.Cattle are grazing on the pasture.The police are looking for him.有些集体名词有时作单数看待, 有时作复数看待, 主要根据意思来决定.His family isn’t very large.His family are all music lovers.The committee meets twice a month.The committee are divided in opinion.The audience was enormous.The audience were greatly moved at the words.有些名词单复数同形, 可根据意思决定谓语动词的数:This new series is beginning next month.These new series are beginning next month.This species is now extinct.These species are now extinct.5) 表示时间, 重量, 长度, 价值等的名词, 尽管仍是复数形式, 如果作整体看待, 动词也可用单数形式(当然用复数动词也是可以的): Three weeks was allowed for making the necessary preparations.One hundred li was covered in a single night.6) 其他问题a) 书名, 国家名用单数:Tales from Shakespeare is a book by Charles Lamb.b) 学科名, 如mathematics, economics用单数.c) many a 或more than one 所修饰的词作主语时, 谓语动词多用单数形式:Many a person has had that kind of experience.More than one person has involved in the case.a number of 后接复数, the number of后接单数:A number of books have been published on the subject.The number of books published on the subject is simply amazing.d) one of those 后用单数. 在“one of + 复数名词+关系分句”结构中,关系分句中谓语动词的单复数形式在一般情况下有两形式,一是根据先行词采用复数形式:Joan is one of those people who go out of their way to be helpful.当one 之前友the only 等限定词和修饰语时,关系分句谓语动词根据one 而定,即采用单数形式:He is the only one of those boys who is willing to take on another assignment.Ⅱ非谓语动词1. 不定式1) 形式主动形式被动形式一般式to do to be done完成式to have done to have been done进行式to be doing完成进行式to have been doinga) 完成式: 不定式的一般形式所表示的动作, 通常与主要谓语表示的动作(状态)同时(或几乎同时)发生, 或是在它之后发生. 假如不定式所表示的动作, 在谓语所表示的动作(状态)之前发生, 就要用不定式的完成式.I am glad to have seen your mother (= I am glad I have seen your mother).(比较: I am glad to see you.)He is said to have written a new book about workers.He pretended not to have seen me.b) 进行式: 如果主要谓语表示的动作(状态)发生时, 不定式表示的动作正在进行, 这时要用不定式的进行式.You are not supposed to be working. You haven’t quite recovered yet.We didn’t expect you to be waiting for us here.He pretended to be listening attentively.c) 完成进行式: 在谓语所表示的时间之前一直进行的动作, 就要用不定式的完成进行式.The struggle was known to have been going for twenty years.We are happy to have been working with you.d) 被动式: 当不定式的逻辑上的主语是不定式所表示的动作的承受者时, 不定式一般要用被动形式.It is an honour for me to be asked to speak here.She hated to be flattered.He wanted the letter to be typed at once.This is bound to be found out.There are a lot of things to be done.She was too young to be assigned such work.2) 功用: 不定式可以作主语(a), 宾语(b), 表语(c), 定语(d) 或是状语(e).a. To scold her would not be just.b. We are planning to build a reservoir here.c. One of our main tasks now is to mechanize agriculture.d. Do you have anything to declare?e. We have come to learn from you.3) 不带to 的不定式:a) 在“动词+ 宾语+不定式”结构中, 如果动词是表示感觉意义的see, hear, watch, smell, feel, notice等, 或是表示“致使”意义的have, make, let等, 其后的不定式结构不带to.John made her tell him everything.这类结构转换为被动语态时, 后面的不带to 的不定式一般还原为带to 的不定式.She was made to tell him everything.b) 在had better, had best, would rather, would sooner, would just as soon, might (just) as well, cannot but 等搭配之后, 动词不定式也不带to.I’d rather not have eggs and bacon for breakfast.They cannot but accept his term.c) 在make do, make believe, let drop, let fall, let fly, let slip, let drive, let go of, let there be, hear say, hear tell, leave go of等固定搭配中, 用不带to的动词不定式.John let fly a torrent of abuse at me.I’ve heard tell of him.d) 在动词help(或help +宾语)之后可用不带to的不定式, 也可用带to 的不定式.Can I help (to) lift this heavy box?e) 在介词except, but 之后, 如果其前有动词do的某种形式, 不定式一般不带to, 反之带to.There is nothing to do except wait till it stops raining.Smith will do anything but work on a farm.There’s no choice but to wait till it stops raining.f) 连词rather than, sooner than 置于句首时, 其后的不定式不带to. Rather than push the book back as he wanted to do, he forced himself to pick it up.出现在句中其他位置时, 其后的不定式有时带to, 有时不带to.He decided to write rather than telephone.The manager believes it is important to invest in new machinery rather than to increase wages.g) 用作补语的动词不定式, 如果主语是由“all + 关系分句”,“thing +关系分句”,“what分句”或“thing +不定式结构”等构成,并带有do的某种形式,这时,作为主语补语的不定式可以省to,也可以不省.What he will do is (to) spoil the whole thing.All you do now is complete the formThe only thing I can do now is go on by myself.The thing to do now is clear up this mess.The least I can do is drive everybody else closer to the issue.4) 不定式的其他用法a) too…to 结构通常表示否定意义:She was too young to understand all that.enough…to结构则表示肯定意义:She was not old enough to understand all that.not too, but too, all too, only too等和不定式连用时,不定式一般不表示否定意义:He’s only too pleased to help her.so…as (to)这种结构也可用不定式作状语:Be so kind as to drop in some time when you are free.b) 如果要说明不定是表示的动作是谁做的, 可以在不定式前加一个for引起的短语:It is not hard for one to do a bit of good.It is a great honour for us to be present at this rally.在以某些形容词(如kind, good, nice, wise, unwise, clever, silly, wrong, right, foolish, stupid, careless, considerate, rude, naughty, impolite等)作表语时, 不定式前可加一个of引起的短语, 来说明不定式指的是谁的情况:It’s kind of you to think so much of us.(It is) Awfully good of you to come and meet us.It’s very nice of you to be so considerate.It’s unwise of them to turn down the proposal.2. V+ing形式(现在分词及动名词)1) 形式a) 完成式: 如果要表示动名词代表的动作在谓语所表示的动作之前发生, 通常用动名词的完成形式.He didn’t mention having met me.I regret not having taken her advice.在某些动词后(或成语中), 常用(或可以用)动名词的一般形式, 尽管动作是在谓语所表示的动作之前发生的.Excuse me for coming late.I don’t remember ever seeing him anywhere.现在分词的完成式主要用在状语中, 表示这动作在谓语所表示的动作之前发生.Having been there many times, he offered to be our guide.Having found the cause, they were able to propose a remedy.另外, 独立结构也可用现在分词的完成形式.The guests having left, they resumed their discussion.The children, having eating their fill, were allowed to leave the table.b) 被动式: 当一个动名词逻辑上的主语所表示的是这动作的对象时, 动名词一般要用被动形式.His being neglected by the host added to his uneasiness.He couldn’t bear being made fun of like that.但要注意, 在want, need, deserve, require 等动词后, 尽管表示的是被动的意思, 却用动名词的主动形式.My pen needs filling.The point deserves mentioning.This problem requires studying with great care.在worth这个形容词后情形也是这样.Her method is worth trying.现在分词的被动式可以用来作定语, 宾语补足语, 状语及用于独立结构中.This is one of the experiments being carried on in our laboratory.You’ll find the topic being discussed everywhere.Being asked to give a performance, she couldn’t very well refuse.These are sold at reduced prices, the defects always being pointed out to the customers.c) 完成被动式: 如果表示的动作在谓语表示的动作之前发生, 有时需要用动名词的完成被动式.I don’t remember having ever been given a chance to try this method.但在多数情况下都避免使用这一形式, 而用一般被动形式代替, 以免句子显得累赘.现在分词的完成被动式一般用来作状语或用于独立结构中.Having been given such a good chance, how could she let it slip away? The decision having been made, the next problem was how to make a good plan.All the compositions having been written and collected, the teacher sent the students home.2) 句法功用a) 作主语:Walking is good exercise.It’s nice talking to you.There is no denying the fact that the new method has greatly raised labour productivity.b) 作宾语:Your shoes need polishing.You mustn’t delay sending the tractors over.He avoided giving us a definite answer.c) 作介词宾语: 动名词作介词宾语用的时候最多. 它常可以用在某些成语后面, 常见的有: insist on, persist in, think of, dream of, object to, suspect…of, accuse…of, charge…with, hear of, approve of, prevent…from, keep…from, stop…from, refrain from, be engaged in, look forward to, opposed to, depen d on, thank…for, feel like, excuse…for,aim at, devote…to, set about, spend…in, get (be) used to, be fond of, be capable of, be afraid of, be tired of, be sick of, succeed in, be interested in, feel (be) ashamed of, be proud of, be keen on, be responsible for.d) 作表语:The real problem is getting to know the needs of the people.动名词和不定式都可以作主语或表语. 一般说来, 在表示抽象的一般的行为时多用动名词; 在表示具体某词动作, 特别是将来的动作时, 多用不定式.e) 作宾语补足语: 分词可以在see, hear, notice, watch, feel, find, keep, get, have等动词后作宾语补足语.The words immediately set us all laughing.Once we caught him dozing off in class.His remark left me wondering what he was driving at.在see, hear, feel, watch, notice等动词后, 及可用现在分词, 也可用不定式构成宾语补足语. 用现在分词时, 表示动作正在发生, 用不定式时表示动作发生了.Do you hear someone knocking at the door?Yes, I did. I heard him knock three times.f) 作状语: 现在分词作状语时, 通常都表示主语正在进行的另一动作, 来对谓语表示的主要动作加以修饰或作为陪衬.I ran out of the house shouting.I got home, feeling very tired.Driving to Chicago that night, I was struck by a sudden thought.现在分词短语有时可以用作状语表示原因, 相当于一个表示原因的状语从句.Not knowing her address, we couldn’t get in touch with her.Seeing nobody at home, she decided to leave them a note.Having already seen the film twice, she didn’t want to go to the cinema.现在分词短语有时可用作时间状语, 相当于when引起的从句: Seeing those pictures, he couldn’t help thinking of those memorable da ys they spent together.如果两个动作是完全同时发生的, 多用when 或while加分词这种结构.Be careful when crossing the street.When leaving the airport, they waved again and again to us.She got to know them while attending a conference in Beijing.3) 前面带有代词或名词的动名词结构: 一个动名词前面可以加一个物主代词(或名词的所有格结构), 来表示这个动名词逻辑上的主语. Their coming to help was a great encouragement to us.Our sole worry is your relying too much on yourself.Do you mind my reading your paper?They insisted on my staying there for supper.如果不是在句子开头, 这个结构常常可以用名词的普通格(或人称代词宾格), 这比用所有格更自然一些.I don’t mind him going.She hates people losing their temper.4) 只能用动名词作宾语的动词: suggest, finish, avoid, stop, can’t help, mind, admit, enjoy, leave off, require, postpone, put off, delay, practise, fancy, excuse, pardon, advise, consider, deny, endure, escape, miss5) 既可用动名词, 也可用不定式作宾语的动词: love, like, hate,dislike, begin, start, continue, intend, attempt, can’t bear, propose, want, need, remember, forget, regret, neglect, try, deserve, can’t afford等.有时两种结构之间意义差别不大, 有时却有不同的意思. 在remember, regret, want, try等词后差别是比较明显的.I remember seeing her once somewhere.I must remember to take my notebooks with me.I regret not having accepted your advice.I regret to say I haven’t given you enough help.She doesn’t want (need) to come.The house wants (needs) cleaning.We must try to get everything done in time.Let’s try doing the work some other way.6) 悬垂修饰: 分词作状语时, 表示的必须是主语的一个动作或状态. Walking through the park, we saw a lot of flowers. (walking是we的动作, 正确)Walking through the park, the flowers looked very beautiful. (错误)Standing on the tower, we could see the whole city. (正确)Standing on the tower, the whole village could be seen. (错误)3. 分词1) 意义: 过去分词通常来自及物动词, 带有被动意义和完成意义; 而现在分词有的来自及物动词, 有的来自不及物动词, 通常带有主动意义和未完成意义.frozen food a freezing winda bored traveller a boring journeya lost cause a losing battlea conquered army a conquering armya finished article the last finishing touchthe spoken word a speaking birda closed shop the closing houra recorded talk a recording machine来自不及物动词的过去分词很少能单独用作前置修饰语, 能作这样用的仅限于下面几个词, 仅表示完成意义, 不表示被动意义.the risen sun, fallen leaves, faded/withered flowers, returned students, retired workers, departed friends, escaped prisoners, the vanished jewels, newly-arrived visitors用作后置修饰语的过去分词一般都带有修饰语或其他成分, 在意义上相当于关系分句.Most of the people invited to the reception were old friends.2) 句法作用a) 作定语: distinguished guest 贵宾, unknown heroes 无名英雄, armed forces武装部队, canned food罐头食品, boiled water开水, steamed bread馒头, stricken area灾区分词还可构成合成词作定语: simply-furnished room陈设简单的房间, clear-cut answer明确的答复, highly-developed industry高度发展的工业, heartfelt thanks衷心的感谢, hand-made goods手工制品, man-made satellite人造卫星b) 作补足语: 可以带过去分词作宾语补足语的动词有:see, hear, feel, find, think等表示感觉和心理状态的动词.I saw the students assembled in the hall.We found her greatly changed.make, get, have, keep等表示”致使”意义的动词:I have my hair cut every ten days.She got her bad tooth pulled out.Please keep us informed of the latest developments.like, want, wish, order等表示希望, 要求, 命令等意义的动词:I don’t want any of you (to be) involved in the scandal.He won’t like such questions (to be) discussed at the meeting.c) 过去分词短语常用作状语, 修饰谓语, 很多都说明动作发生的背景或情况.Guided by these principles, they went on with the work,Delighted with her work, they made her the general manager.过去分词短语也可作状语表示原因, 相当于一个表示原因的状语从句.Influenced by his example, they performed countless good deeds.有时也可说明动作发生的时间, 相当于一个表示时间的状语从句. This method, tried in areas near Shanghai, resulted in a marked rise in total production.间或也可表示一个假设的情况, 相当于一个条件从句.Given closer analysis, we can see this is totally wrong.偶尔也可用来代替一个“让步”状语从句.Picked 20 years a year, it grows tired only after 40 or 50 years.d) 独立结构: 在用分词短语作状语时, 它逻辑上的主语一般必须与句子的主语一.致. 但有时它也可以有自己独立的逻辑上的主语, 这种结构称为独立结构, 一般表示一种伴随的动作或情况.He rushed into the room, his face covered with sweat.有时可以表示时间:Late that autumn, his work finished, he prepared to return to his institute.表示原因:Her eyes dimmed with tears, she did not see him enter.条件:All things considered, her paper is of greater value than yours.Ⅲ虚拟语气1. that从居中:1) wish, would rather (sooner), had better:I wish I were as strong as you.I wish I had paid more attention to our pronunciation.I wish I remembered the address.I would rather they came tomorrow (you had gone there too).I had rather (that) you told him than I did.2) suggest, order, demand, propose, command, request, desire, insist 等动词后的宾语从句:The commander ordered that all civilians (should) be evacuated.He asked that he be given an opportunity to try.She urged that he write and accept the post.3) it is desired, it is suggested, it is requested, it was ordered, it was proposed, it is necessary, it is important, it has been decided 等结构后的主语从句中.It was arranged that they leave the following weekIt will be better that we meet some other time.4) suggestion, motion, proposal, order, recommendations, plan, idea等后面的表语从句和同位语从句:His sole requirement is (was) that thy system be adjusted.2. 在某些句型中1) it is time thatIt is time that we went (或should go) to bed.It is high time we (should) put an end to this controversy.2) as if (though) 引起的从句:They talked (are talking) as if they had been friends for years.It seems as if it was (were) spring today.He acts (acted) as if (though) he were (was) an expert.3) 以lest, for fear that 和in case 引起的从句(这时谓语多用should +动词原形):He took his raincoat with him lest it should rain.He put his coat over the child for fear that (或lest) he should catch cold. I’ll keep a seat for you in case you should need it.4) 以whatever, whoever, no matter what这类代词或词组引起的从句(这时, 谓语多用may加动词原形构成):Whatever defects he may have, he is an honest man.Come what may, we will go ahead. 不管发生什么情况, 我们都要干下去.I accept that he is old and frail; be that as it may, he’s still a good politician.我承认他年老体衰, 然而尽管如此, 它仍是优秀的政治家.3. 条件句1) 虚拟条件句主要有下面两类:a) 表示现在及将来情况(表示纯然假设或实现的可能性不大的情况): 谓语主要形式如下(be多用were这个形式):从句主句过去式would + 动词原形If I wer e you, I wouldn’t lose heart.How nice it would be if you could stay a bit longer.b) 表示过去情况的虚拟条件句(与事实完全相反的假设情况), 谓语主要形式如下:从句主句had + 过去分词would have + 过去分词She would have come if we had invited her.If I hadn’t taken your advice, I would have made a bad mistake,You wouldn’t have caught cold if you had put on more clothes.2) 有时候, 条件从句表示的动作和主句表示的动作, 发生的时间是不一致的(如一个是过去发生的, 一个是现在发生的). 这时, 动词的形式要根据表示的时间来调整. 这种句子可以称为错综时间条件句. If he had received six more votes, he would be our chairman now.If we hadn’t got everything ready by now, we should be having a terrible time tomorrow.3) 有时假设的情况并不以条件从句表示, 而是通过一个介词短语来表示.Without music, the world would be a dull place.We could have done better under more favorable conditions.That would have been considered miraculous in the past.But for the storm, we should have arrived earlier.4) 如果条件句从句中包含有were, had, should 或could, 有时可把if 省略掉, 并把were, had, should或could放在主语前面.Had we made adequate preparation, we might have succeeded.Should there be a flood, what should we do?Were it not for their assistance, we would be in serious difficulty.Ⅳ介词1. 合成介词和复杂介词1) 合成介词: inside, into, onto, out of, outside, throughout, upon within, without2) 复杂介词: according to, along with, apart from, as for, as to, because of, by means of, in front of, in spite of, instead of, in accordance with, on account of, on behalf of, owing to, due to, together with, up to, with regard to, prior to等2. 介词在句末:This is what he is interested in.Does everyone has a seat to sit on?3. 名词加介词( n + prep)1) 某些名词之后要求用某些介词: solution to, faith in, glance at, need for2) 某些名词之前要求用某些介词: on one’s guard, at one’s request, in all probability, to my delight4. 动词加介词1) Vi + prep: prevail on, appeal to, fall into, apply for, touch upon2) Vt + O + prep: lay emphasis on, take advantage of等3) Vi + adv + prep:I don’t wish to break in on your thoughts.The family came up against fresh problems.You’re not telling me the whole story. You’re holding out on me.She got off with him soon after she began to work at the institution.4) Vt + O + adv +prep:You shouldn’t take your resentment out on me.We shouldn’t put the shortage down to bad planning.5. 形容词加介词about --- anxious, careful, careless, certain, considerate, enthusiastic, guilty, happy, mad, particular, sad, sure, timid, unhappy, etcat --- awkward, bad, clever, disappointed, disgusted, good, marvellous, quick, skilful, skilled, useless, weak, etcfor --- convenient, eligible, grateful, homesick, hungry, necessary, noted, perfect, responsible, etcfrom --- evident, exempt, inseparable, safe, tired, etcin --- deficient, expert, liberal, quick, rich, successful, weak, etcof --- apprehensive, characteristic, critical, destructive, envious, hard, inconsiderate, impatient, dependent, jealous, positive, scared, sensible, short, sick, suspicious, typical, worthy, etcon --- dependent, keen, intent, etcto --- acceptable, accessible, agreeable, alive, attentive, blind, comparable, courteous, deaf, destructive, essential, favourable, hostile, indifferent, married, obedient, parallel, preferable, related, responsible, sensitive, suitable, unjust, etcwith --- awkward, bored, careful, disappointed, generous, identical, ill, impatient, popular, sick, wrong, etcⅤ连词1. 并列连词1) 表示意义的引申: and, both…and, not only…but(also), as well as, and …as well, neither…nor2) 表示选择: or, either…or3) 表示转折: but, while, whereas, yet, however/nevertheless(也可认为是副词)4) 表示因果: for, so, therefore, hence2. 从属连词1) 表示时间: when, while, as, after, before, since, until(till), as soon as, once2) 表示原因: because, as, since, now that, seeing that3) 表示条件: if, unless, in case, provided(that), suppose, as long as, on condition (that),4) 表示其他关系: (al)though, than, as/so…as, lest, in order that, so…thatⅥ定语从句1. 限制和非限制性定语从句: 限制性定语从句是名词词组不可缺少的一个组成部分, 去掉了会造成病句或意义不明确; 非限制性定语从句属于补充说明性质, 去掉了不会影响主要意义, 通常用逗号与它的先行词分开.The boys who wanted to play football were disappointed when it rained. The boys, who wanted to play football, were disappointed when it rained.如果定语从句的先行词是专有名词, 或是带有形容词性物主代词(my, his, etc)或形容词性指示代词(this, that, etc)作限定词, 其后的定语从句通常都是非限制性的:Mary Smith, who is in the corner, wants to meet you.Her mother, who had long suffered form arthritis, died last night.All these books, which have been donated by visiting professors, are to be used by the postgraduates.在非限制性定语从句中只能用who/whom指人, 用which指物,通常不用that替代.My father, who had been on a visit to America, returned yesterday.All the books, which had pictures in them, were sent to the little girl.2. 定语从句的引导词1) that, who, whom: 非限制性定语从句, 如果修饰人, 一般用who, 有时用that (作主语时用who较多). 如果关系代词在从句中作宾语, 就应当用宾格whom 或that, 但在大多数情况下都可以省略掉, 在口语中可用who代替whom.Here is the man (whom) you’ve been looking for.He is a man (that) you can safely depend on.The people (who/that) you were talking to were Swedes.There are some people here who I want you to meet.但在介词后只能用whom:This is the man to whom I referred.但在口语中一般都把介词放到句子后面去, 这时可用that, 但省略时更多一些.Have you met the person about whom he was speaking?Have you met the person (that) he was speaking aboutThe girl to whom I spoke is my cousin.The girl (who/that) I spoke to is my cousin.2) 限制性定语从句如果修饰“物”, 用关系代词that的时候较多, 也有时用which.. 当这个代词在从句中是用作宾语时, 在绝大多数情况下都是省略的, 特别是口语中(尤其是当被修饰的词是all, everything 等词时):Have you everything you need?(Is there) anything I can do for you?All you have to do is to press the button.在介词后只能用which, 在口语中一般都把介词放到从句后部去, 这时可以用that, 但省略的时候更多一些:The tool with which he is working is called a wrench.。