系动词助动词情态动词讲义

系动词助动词情态动词讲义
系动词助动词情态动词讲义

系动词、助动词、情态动词讲义

系动词

一、状态系动词

用来表示主语状态,只有be一词。

be和某些形容词例如quiet/noisy,good/bad,wise/foolish等连用时可以用进行式,如Tom is being foolish(汤姆此刻正在说傻话或做傻事),意指主语此刻正在表现出这种特征。

二、持续系动词

用来表示主语持续保持一种状况或态度,包括keep, rest, remain, stay, lie, stand等单词。

三、表像系动词

用来表示“看起来像”这一概念,包括seem, appear, look等单词。

四、感官系动词

感官系动词包括feel, smell, sound, taste等单词。

五、变化系动词

这些系动词表示主语变成什么样,变化系动词包括become, grow, turn, fall, get等单词。

助动词

一、助动词be的用法

1)be +现在分词,构成进行时态。

2)be + 过去分词,构成被动语态。

3)be + 动词不定式,可表示表示最近、未来的计划或安排。

二、助动词have的用法

1)have +过去分词,构成完成时态。例如:

上月未为止,他们已经完成工作的一半。

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2)have + been +现在分词,构成完成进行时。例如:

我一直在学英语,已达十年之久。

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3)have +been +过去分词,构成完成式被动语态。例如:

中国教英语已经多年。

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三、助动词do 的用法

1)构成一般疑问句。

2)do + not 构成否定句。

3)放在动词原形前,加强该动词的语气。例如:

一定来参加我的生日宴会。

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我确实去那儿了。

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4)用于倒装句。引导此类倒装句的副词有never, seldom, rarely, only等。例如:我从未听说过这样的事情。

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进了大学以后,我们才认识到英语的重要性。

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四、助动词shall和will的用法

shall和will作为助动词可以与动词原形一起构成一般将来时。

情态动词

一、情态动词can 的用法

1. 表示能力,意为“能、会”。

2. 表示请求或允许,意为“可以、能”等。

3. 表示推测。

二、情态动词may 的用法

1. 表示“许可、准许、请求许可”,如:

你今晚可以去看电影。

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2. 表示可能性,意思为“可能、也许”。

3.表示希望、祈求、祝愿,常可译为“祝愿”。如:.

祝你过得愉快。

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祝你幸福!

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三、can 和may的比较

1、两者都可用来表示“请求”或“允许”的意思。用作一般的请求时,can和may往往可以互换,只不过can用得更为普通,而may比can更正式、更客气和更恭敬。

2、两者都可用来表示“可能性”。在否定句中,can’t表示“不可能”,语气比较肯定;may not表示“可能不,也许不”,语气不是很肯定。如:

尼克明天不可能去北京。

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尼克明天可能不去北京。

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四、must的用法

1、must 表“必须”之意及其与have to的比较

1)两词都是“必须”的意思,have to 表示客观的需要,must 表示说话人主观上的看法,既主观上所认为的必要。例如:

弟弟病得很厉害,我必须半夜里把医生请来。

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2)have to有人称、数、时态的变化,而must只有一种形式。

3)否定结构中:don’t have to表示“不必”,mustn’t表示“禁止”。

2 must表示推测

你辛苦干一整天,一定累了。

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他一定在办公室工作呢。

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我刚才没有听到电话,我想肯定是睡着了。

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五、should 和ought to两者表示“应该”的意思。

六、need和dare这两词既可做实义动词用,又可做情态动词用。

七、表示推测的用法

表示推测的情态动词有must, can, could, may, might等,语气由must向might依次减弱。

八、情态动词+ have +过去分词

1)may(might)have + done sth, /can (could)have + done sth推测过去时间里可能发生的事情。例如:

菲力浦可能在车祸中受了重伤。

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2)must have +done sth,对过去时间里可能发生的事情的肯定推测,语气较强。

3)ought to have done sth /should have done sth表示本应该做某事,而事实上并没有做。否定句表示“不该做某事而做了”。例如:

你当时在做试验时应该更仔细点。

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他不该把旧衣服扔了。

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4)needn’t have done sth表示本没必要做某事,但做了。例如:

旅行时,我衣服穿得较多,其实没有必要。那时天很热。

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英语语法-助动词和情态动词用法及习题

目录 1助动词和情态动词的定义 (2) 2 can,may,must (3) 3 Will you~?和Shall I(we)~? (10) 4 would和should (14) 5 have to (16) 练习题 (17) 答案 (18)

1助动词和情态动词的定义 在英语中,助动词一般没有词义,主要帮助构成谓语,表示时态、语态或构成疑问及否定形式。对于助动词,同学们一般了解即可。 情态动词与助动词不同,它有词义,但它也和助动词一样,不能单独作谓语,它必须和其他动词一起构成谓语,另外重要的一点是情态动词没有人称和数的变化;情态动词后必须跟动词原形。 (×)She cans swim well. (×)She can swims well. (○)She can swim well. (○)She swims well. 即使主语是第三人称单数(例如she)can也不能加“s”。 句子中有情态动词can时,即使主语是第三人称单数,也不能在一般动词(例如swim)上加“s”。 1 助动词的种类 1.be(am,are,is,was,were,been,being) 它与现在分词结合,可以构成进行时态(参见第九章),与过去分词结合可以构成被动语态(参见第十三章)。 I am reading the book.我正在读这本书。 The book was written by me. 这本书是我写的。 2. have(has,had,having) 它与过去分词结合,构成完成时态(参见第十一章)。 I have finished my homework. 我已经写完作业了。 3.shall(should),will(would)

关于be动词、情态动词和实义动词的区别

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二人称,be动词也要相应的变为are.同样肯定句中的my和our 也要变为your. ①I am a boy. (变为一般疑问句) →Are you a student? ②We are good friends. (变为一般疑问句) →Are you good friends? ③She is from America. (变为一般疑问句) →Is she from America? ④He is strict with us. (变为一般疑问句) →Is he strict with us? (3)变特殊疑问句:一般的要求为“对划线部分提问”,即用特殊疑问词代替划线的部分,后接省略划线部分的一般疑问句(一般不再出现划线部分)。如: ①I’m well.(对划线部分提问) →How are you? ②She is from America. (对划线部分提问) →Where is she from? 2.关于情态动词:初中我们常用的情态动词主要有:can、 may、 must、need。我们这里主要以can为例来说明情态动词的用法。 情态动词后面必须接动词的原形。情态动词can的用法类似于be动词。不论主语为第几人称,变否定就是在can后加not.变

助动词和情态动词

助动词和情态动词 1. ---Good morning. I've got an appointment with Miss Smith in the Personnel Department. ---Ah, good morning. You______ be Mrs. Peters. (10北京) A. might B. must C. would D. can 2. I have told you the truth. ______ I keep repeating it? (10江西) A. Must B Can C May D Will 3. Jack described his father, who _______a brave boy many years ago, as a strong–willed man (10安徽) A. would be B. would have been C. must be D. must have been 4. I_______ have watched that movie —it’ll give me horrible dreams. (10山东) A. shouldn’t B. needn’t C. couldn’t D. mustn’t 5. Doctors say that exercise is important for health, but it _______ be regular exercise. (10辽宁) A.can B.will C.must D.may 6.Wine ____ do good to people’s health if drunk properly. A. can B. should C. must D. might 7. But for the help of my English teacher, I ____ the first prize in the English Writing Competition. A. would not win B. would not have won C. would win D. would have won 8. My sister met him at the Grand Theatre yesterday afternoon, so he _____ your lecture. A. couldn’t have attended B. needn’t attend C. mustn’t have attended D. can’t attend 9. ---Has Mr. Tom White arrived? ---Yes, already. ____ he wait outside or just come in? A. Shall B. May C. Could D. Must 10. Walking in space ____ sound easy, yet great care and skills are needed. A. should B. shall C. may D. must 11. ---Amazing! You ____ wear slippers at work! ----Don’t you know it’s a fashion? A. must B. should C. can D. may 12. ---The two astronauts had been trained for long before they flew to space. ---Oh, they ____ quite a lot of difficulties. A. might go through B. may go through C. should have gone through D. must have gone through 13. ---Can I pay the bill by check? ---Sorry, sir. But it is the management rule of our hotel that payment ____ be paid in cash. A. will B. can C. should D. shall 14. ---Catherine looks sad. Did you tell her about the accident? ---Yes, but I ____ her just before her final exams.

be动词、助动词、情态动词讲解(基础篇)第一讲

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+动词原形+其他+。 We watch TV every night. 变否定:主语+don't +动词原形+其他+。 We don't watch TV every night. 一般疑问句Do + 主语+ 动词原形+ 其他+ ? Do you watch TV every night? Yes, we do. / No, we don 't. 特殊疑问句:疑问词+ do + 主语+ 动词原形+ 其他+ ? How often do you watch TV? ②主语为单数名词或代词时:肯定句:主语+ 动词第三人称单数形式 + 其他+ 。 He watches TV every night. 否定句:主语+ doesn't+动词原形+其他+。 He doesn't watch TV every night. 一般疑问句:Does + 主语+ 动词原形+ 其他+ ? Does he watch TV every night? Yes, he does. / No, he doesn 't. 特殊疑问句:疑问词+ does + 主语+ 动词原形+ 其他+ ? How often does he watch TV? ★主语为单数或不可数名词,谓语要用单数第三人称,反过来,看见动词用了单数第三人称,可以推知主语是单数或不可数名词。 ( )1. How __ ______ your dad help at home? A. do B. does C. is ( )2. ______ goes bad easily in summer. A. Milk B Apples C. Cakes ③过去时的句式(当句子时态为过去时时,动词用过去式,不受主语单复数的影响) 肯定句:主语+ 过去式+ 其他+ 。 He / We got up early every morning last year. 否定句:主语+ didn't + 动词原形+ 其他+ 。 He / We didn't get up early every morning last year. 一般疑问句:Did + 主语+ 动词原形+ 其他+ ? Did he / you get up early every morning last year? Yes, he

情态动词与虚拟语气

情态动词与虚拟语气 【语法要点】 情态动词 所谓情态动词是指它含有一定的含义,可以表达某种感情和说话的语气,但是它不可以单独使用 作谓语动词。学习情态动词主要学习英语国家的语言习惯和表达法,特别是在口语中不要过分追求原理,更不要不根据说话场合而进行推理,编造出一些语法结构正确的中文式英语。 一、情态动词的类型 1.只作情态动词的有:must、can、could、may、might、ought to 2.既可作情态动词又可作实义动词的有:need、dare 3.既可作情态动词又可作助动词的有:shall、should、will、would 二、情态动词的特征 1.表示说话人的情感态度,不能单独作谓语,与行为动词或连系动词一起作谓语。 2.情态动词没有人称和数的变化,后接动词原形。 3.具有助动词的特征:可用来构成否定句、疑问句或简短答语。 三、情态动词的用法 1.表示能力 (1)表示现在的能力,用can 或be able to。表示一般的能力时多用can,表示“经过努力成功 的做成某事”用be able to。 (2)表示过去的能力,用could或was/were be able to。区别同上。 (3)表示将来的能力,用will be able to。 2.表示推测、可能性 (1)can 用在肯定句中表示客观的可能性,而不表示具体事情实际发生的可能性。 例如:Accidents can happy on such rainy days. (2)表示具体事情实际发生的可能性的情态动词,其表示可能性的层次如下表: 情态动词肯定式否定式疑问式 must 必定、必然、一定 will 很可能、大概不会、不该会,,吗? would 可能性较will 小不会、不该(较won’t 弱)会,,吗?(较will 弱) should 应该会、理应(表示合乎理想的情况或结果) ought to 与should 同义 can 一定不会、不可能(否定推测)有可能吗? could 可疑的可能不可能(与can’t 同义)有可能吗?(较can 弱)may 或许、可能、说不定可能不 might 或许、可能(较may 弱)可能不(较may not 弱) 注意→(1)may,must 常用于肯定句,一般不用于否定句和疑问句。 (2)can 常用于否定句,疑问句和感叹句中,表示疑惑、惊讶或不相信等意思。could 既可用于肯定句,又可用于否定句、疑问句中。

英语助动词和情态动词及练习

英语助动词和情态动词及练习 一、概述 不同的时态(一般式、进形式、完成式、将来式),不同的语态(主动、被动),不同的语气(祈使、陈述、虚拟),不同的结构(肯定、否定、疑问),以及说话者本身的态度或命令、请求、愿望、可能等,所有这些都要借助于助动词和情态动词表达出来。助动词一般没有词意,不能单独作谓语动词,除非省略句中。他们只参加时态、语态、语气或否定、疑问结构。情态动词有词义,可以用来表示说话者的语气和态度。主要的助动词和情态动词如下表: 二、助动词 助动词一般没有词意,不能单独作谓语动词。其作用在于帮助构成各种时态、语态、否定、疑问等。 1、助动词be(am, is, are, was, were, being, been)的用法 (1) be后跟现在分词构成进行时态。 Who is playing the violin?谁在拉小提琴? She was reading a book then.那时她正在读书。 (2)be后跟过去分词构成被动语态。 He was asked to do the work.有人要他干这件工作。 You are invited to attend the meetintg.有人邀请你参加会议。 (3)be 后跟不定式作谓语,有如下几种情况: ①表示计划、安排将要发生的事。 Who are we to meet?我们要见谁呀? I'm to have supper with John this afternoon.今天下午我要与约翰一起吃晚饭。 ②表示指示、命令,否定式表禁止。 You are to see the headmaster today.今天你必须去见校长。 You are not to enter the room without permission.未经允许你不能进入房间。 ③表示义务、责任等,同should。 You are to be back before 5.你得在5点钟以前回来。 What is to be done?该干什么。 ④表示可能性,与情态动词may, can同义。 Such books are to be found in any library.这种书任何图书馆都有。 Not a sound was to be heard.一点声响也没有。 ⑤表示后来发生的事,可以用来表示命运或注定 They say good-bye, little knowing that they were never to meet again.他们告别了,没想到再也不能相见了。 He was to regret the decision.他有一天会后悔做出这一决定的。 ⑥用于习语 Where am I to go? 我该向何处去? What am I to do? 我该怎么办? 2、助动词have(has, had, having)的用法 (1)助动词have可以构成完成时或完成进行时

be动词-情态动词及助动词用法

七年级英语双休日作业 班级:姓名:等级 英语句型变化总结练习 1、含有be动词am,is,are构成的句子: 变一般疑问句时把am,is,are提到句子的前面,句尾用问号即可。 变否定句时直接在am,is,are后面加not即可。例如: 肯定句:He is a student. 一般疑问句: a student? 否定句: He a student. 肯定句:We are from China. 一般疑问句: from China? 否定句:We from China 2. 由情态动词can, may, should等构成的句子: 变一般疑问句时把can, may,提到句子的前面,句尾用问号即可. 变否定句时直接在can, may,后面加not即可. 例如: 肯定句: She can swim. 一般疑问句:she swim? 否定句: She swim. 3. 由行为动词构成的句子: 需要加助词do或does. 变一般疑问句时把do/does放在句子前面. 变否定句时在主语后面加don’t / doesn’t , 谓语用动词原形。例如: 肯定句: They play football after school. 一般疑问句: play football after school? 否定句: They football after school. 肯定句:Tom watches TV every day. 一般疑问句: Tom TV every day? 否定句: Tom TV every day.

注意:变否定句时相关词的改变 肯定句变否定句时,除将谓语变为否定式外,句中其他词语也可能随之改变: 如将some改为any,too和also改为either,and改为or等:There are some birds in the tree. 树上有些鸟。 →There aren’t ______ birds in the tree. 树上没有鸟。 He likes the book, too. 他也喜欢这本书。 →He doesn’t like the book, ______. 他也不喜欢这本书。He likes singing and dancing. 他喜欢唱歌和跳舞。 →He doe sn’t like singing ______dancing. 他不喜欢唱歌也 不喜欢跳舞。补充练习: 根据句后括号内的要求,填入句中所缺的词: 1. I know the answer. (一般疑问句) ______ ______ know the answer? 2. We can see some birds. (一般疑问句) ______ ______ see ______ birds? 3. There is a computer in the house. (一般疑问句) ______ ______ a computer in the house? 4. There are some flowers on the teachers’ desk. (一般疑问句) ______ ______ any flowers on the teachers’ desk? 5. There are some apples on the tree. (否定式) There ______ ______ ______ apples on the tree. 6. I think he is old. (否定句) I ______ think he ______ old.

中考英语情态动词、助动词、系动词专项讲解

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① may表示请求,might语气更委婉, 例如:May I help you? Might I sit here? ② may表示肯定的推测,语气比can更弱,might对过去的推测 例如:Mary may be doing her homework now. May can be doing her homework now. can表达的推测语气比may更强,更有把握。 3. must和have to ①must表示命令、责任,意为“一定,必须”,must not/ mustn’t表禁止,“一定不要”, 例如:Children must stay away from strangers.孩子一定要远离陌生人。 You mustn’t play fire because it’s dangerous. 千万不要玩火,因为太危险了。 拓展:在表示禁止时,会用“No Doing”来表示,如No Smoking. / No Walking.等。 ② must表示推测,语气比can更强. 例如:Mr. Liu must be on holiday now because he is wearing pants. 刘老师现在肯定在度假因为他正穿着平底裤呢!(上课是要穿正装的) ③ Must作一般疑问句开头提问时:肯定用must回答,否定用needn’t或d on’t have to回答。 例如:Must I finish my homework now? Yes, you must. / No, you ne edn’t. ④ must 和have to 的区别: a) must没有人称、时态的变化,而have to根据人称、时态的变化,有不同的形式。 b) Must表示主观上必须做,而have to 表示客观需要。

be动词、助动词、情态动词讲解(基础篇)Microsoft Word 文档

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系动词助动词情态动词内部编号:(YUUT-TBBY-MMUT-URRUY-UOOY-DBUYI-0128)

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助动词与情态动词练习题.docx

1.If they _____ to do this work, he might do it some other way. A. were B. should C. will D. can A. should have sent B. were going to send C. should be sending D. should send 3.Let's take a walk, ____? A. will we B. don't we C. do we D. shall we 4.He was a good swimmer so he _____ swim to the river bank when the boat sank. A.could B.might C.should D.was able to 5.I went to the doctor's yesterday, I had to wait for half an hour before he ____ see me.

A.can B.may C.might D.could 6.---- _____ this book be yours? ---- No, it ____ not be mine. It ____ be his. A. Can, must, may B. May, might, must C. Can, may, must D. Must, can, may 7."We didn't see him at the lecture yesterday. " "He _____ it. " A. mustn't attend B. can't have attended C. would have not attended D. need have attended A. can have missed B. may have missed C. can have lost D. may have lost 9.Since the ground is white, it _____ last night. A. had snowed B. must have snowed

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