九大状语从句重难点讲解
状语从句重点难点归纳课件
×
×
×
×
time 等名词短语引导状语从句不加介词。
考点4：till, until引导的时间状从：
翻译句子：
1. We ______________________ (我们将一直等到他回来) will wait until/till he comes. 2．_____________________________________ He didn’t go to bed until his father came back. (他昨晚直到他父亲回来才睡觉) 延续性动词 until/till从句用于肯定句时，主句动词是_______ 用于否定句时，主句动词是________ 非延续性动词
趁…的情况赶紧做, 否则来不及了
考点2. 一…就…引导的时间状语从句:
1.---Did you remember to give Mary
the money you owed her? ----Yes. I gave it to her _______________________ as soon as ___________________________ the moment /minute/ instant (一….就…) ____________________________ I saw her. Immediately/directly /instantly 2.--Did Linda see the traffic accident? No sooner than occurred. ---__________had she gone_____it Hardly had she gone When/before =________ _________ it happened. Scarcely had she gone When/before =________ __________ it happened.
考点11 九大状语从句基本考点-备战2023年中考英语一轮复习考点帮(上海专用)(原卷版)
understand some of the dialogues.
A．because
B．unless
C．after
D．though
3．（2022·上海黄浦·一模）Life on the Earth will become uneasy _________ population
growth is under control.A．Sຫໍສະໝຸດ nceB．Although
C．As
D．But
8．（2022·上海宝山·二模）It will cost you a lot of money ________ you choose to buy a flat
in the city centre.
A．if
B．although
C．so that
D．unless
tonight.
A．since
B．when
C．because
D．unless
5．（2022·上海奉贤·一模）“You mustn’t bring your mobile phones to school, ________ you
will be against the law,”the teacher said to the students.
B．although
C．so that
D．because
13．（2022·上海杨浦·二模）Unless we book it now, there ________ any tickets left for the
concert.
A．aren’t
B．weren’t
C．haven’t been
D．won’t be
由 so that…或 so…that 引导。 例如：He got up early so that he could catch the early bus. 5．结果状语从句 由 so that…或 so…that 引导。 例如：(1) I got up late, so I was late for school. (2) It is such a hot day that none of us want to take a walk outside. 6．让步状语从句 由连接词 though 或 although 引导。但要注意用了 though 就不能用 but。 例如：Though he is old, he still studies English hard. 7．地点状语从句 主要有连词 where, wherever, anywhere 引导。We’ll go wherever you say. 8．原因状语从句 主要要 because, since, for, as 等引导。 Since I haven’t got her address, I can’t write to her. 9．方式状语从句 主要由 as, like, as if, as though 来引导。Do it as he asked. She closed her eyes as though she were so tired.
英语状语从句要点难点详解
1．引导原因状语从句最常用的连词是 because, since, 和as， 所引导的从句可以放在主句之前，也可放在主句之后。其 中 because语势最强，since次之，as又次之。
△ because通常表示说话人认为这种理由或原因是听话人所不知道
HSceahrcaedlyimhapdrehseseednmtereetdhatht ewraoyotmhewfhiresnt tihmeepIhomneetrhainmg..
I started the very moment I got your letter. I’ll tell him the minute (that) he gets here.
TEhveryyhtaimd ehaIrcdaltychstarctoedldt,oI whaovrek pwahineninthmeytrboaucbkl.e began. IH’armdlgyohinagd ttohesyeesthairmtendetxot wtimorekhwehceonmtehsettoroSuhbelnezbhegna. n. He lheafdt EscuarrocpeelytheentyeeraerdWthoerrldooWmawr Ⅱhenbrtohkeepohuotn. e rang.
3．某些表示时间的名词词组，如 the (very) moment (= as soon as ), t4h．e 有m些inu关te联(=从a属s 连soo词n，as如), nthoe sionosntaenrt…(= tahsasnoo/nhaasrd),lyth…e dwayh,etnhe/ ysceaarrc, etlhye…mowrhneinng/,beavreerlyy …timweh, eenach等t，im也e, 能ne引xt导tim时e间, t状he语fi从rst句ti。me等， 也△可以如引果导把时no间s状oo语ne从r, 句ha，rd如ly,：scarcely, barely置于句首，它所连带 的I’这l部l t分ell就yo要u 倒ab装ou，t i如t th：e moment you come. IShsteahrtaeddnthoesoinosntearnht eIahredatrhdetnheewresptohratn. she fainted. TNhoesoinosntearnthsahdesshaewhheaimrdsthheeknneewws htheawnasshheefraibnrtoetdh.er.
九大状语从句重难点讲解
状语从句分类：（九大类）时间、地点、原因、条件、让步、结果、目的、方式、比较。
Part 1 时间状语从句：最常用的连接词：When，while，as , before , after , as soon as, until, not until次常见的连接词:The moment\minute, immediately, hardly…when, no sooner than问题一：●We wew swimming in the lake_______suddenly the storm started.A\when B\while C\until D\before●He was about to tell me the secret ______someone patted him on the shoulder A\as B\until C\while D\when●-Did Jack come back early last night? -Yes,it was not yet 8:00 _____hearrived home.A\before B\when C\that D\until●He was about halfway through his meal______a familiar voice came to his ears. A\why B\where C\when D\while一、时间状从中连接词when的用法小结：1、when引导的时间状从的谓语动词可以是可延续的，也可以是表短暂性的动词，可用于主句和从句动作同时发生或从句动作先于主句动作。
例：When the film ended,the people went back.When I lived there,I used to go to the seashore on Sundays.2、可用作并列连词，其意义是“那时，这时”，相当于and at this\that time.常用于以下句式：was about to do sth. … when…\be (on the point of) doing sth. …when…(刚要…这时突然…)e.g.I was about to stop pretending to being listening to the class to listen towhat the teachers said when Mr. Li shouted at me so loudly that the whole class can hear.3、还可以表示原因“既然”，相当于since,considering that.如：It was foolish of you to take a taxi when you could easily walk there in 5 minutes.问题二：●The cost of living in Glasgow is among the lowest in Britain,_____the qualityof life is probably one of the highest.A\since B\when C\as D\while●______I accept that he is not perfect,I do actually like the person.A\While B\Since C\Before D\Unless二、时间状从中连接词while 的用法小结：1、while 引导的动作必须是持续性的，强调某一段时间内，主从句动作同时发生，或主从句中的动作或事物在从句中的动作或事情的进展过程中发生。
完整word版九大状语从句重难点讲解
状语从句分类：（九大类） 时间、地点、原因、条件、让步、结果、目的、方式、比较。
Part 1 时间状语从句：最常用的连接词：When ，while ，as , before , after , as soon as, until, not until次常见的连接词 :The mome nt\mi nu te, immediately, hardly …whe n, no sooner tha n问题一：We wew swimming in the lake suddenly the storm started.He was about to tell me the secret someone patted him on the shoulder-Did Jack come back early last night? -Yes,it was not yet 8:00He was about halfway through his mealA\why B\where C\when D\while、时间状从中连接词 when 的用法小结: 1、when 引导的时间状从的谓语动词可以是 可延续的，也可以是表短暂性的动词，可用于 主句和从句动作 同时发生 或 从句动作 先于 主句动作。
例:When the film ended,the people went back.When I lived there,I used to go to the seashore on Sundays.2、可用作并列连词，其意义是“那时，这时”，相当于and at this\that time 常用于以下句式:A\whenB\whileC\unti l D\before A\asB\unti l C\while D\whenA\beforeB\whenC\thatD\until he arrived home.a familiar voice came to his ears.was about to do sth .…when …\be (on the point of) doing sth.…whe□•••(刚要…这时突然…)e.g.I was about to stop pretending to being listening to the class to listen to what the teacherssaid when Mr. Li shouted at me so loudly that the whole class can hear.3、还可以表示原因“既然”，相当于since,considering that如:It was foolish of you to take a taxi when you could easily walk there in 5 minutes.问题二：The cost of living in Glasgow is among the lowest in Britain,the quality of life isprobably one of the highest.A\since B\when C\as D\whileI accept that he is not perfect,I do actually like the person.A\While B\Since C\Before D\Unless二、时间状从中连接词while 的用法小结：1、while 引导的动作必须是持续性的，强调某一段时间内，主从句动作同时发生，或主从句中的动作或事物在从句中的动作或事情的进展过程中发生。
九大状语从句总复习
九大状语从句总复习（1）状语从句在主从复合句中修饰主句中的动词、形容词或副词等，按意义可以分为时间、地点、原因、目的、结果、条件、方式、比较、让步等状语从句。
一．时间状语从句。
通常由从属连词when, whenever, as, while, before, after, as soon as, till, until, since, once (一旦), hardly……when…, no sooner…….than…; 等引导。
例如：The cyclist started just as the lights changed to green.Whenever we met with difficulties, they came to help us.He didn’t leave his office until he had finished the day’s work.应注意的问题1．在时间状语从句中，通常要用动词的一般现在时态表示一般将来时态，用一般过去时态表示过去将来时态。
但when 引导一般疑问句或名词性从句时不受上述语法规则的限制，因此，应该加以区分。
例如：When China will enter WTO depends on the bilateral (双边的)joint efforts.Once you understand the rules of the game, you’ll enjoy it.2.when , while, as 的不同用法。
一般说来，当主、从句的动作是同时发生的事，三者可以换用。
when 既可以引导一个持续动作，也可以引导一个短暂动作，可用于主句和从句动作同时发生或从句动作先于主句动作；while 引导的动作必须是持续性的，强调主句和从句的动作同时发生，往往侧重主句和从句动作的对比；as 用于引导“在某行为的继续中发生某事”的“继续之行为”，所以多与过去进行时连用，翻译成“一边……一边……”或者表示动作的变化，翻译成“随着……”。
状语从句分类讲解及重难点汇总[]PPT课件
![状语从句分类讲解及重难点汇总[]PPT课件](https://img.taocdn.com/s3/m/e0f7b07edc36a32d7375a417866fb84ae45cc3f6.png)
3. Now that everybody is here, let’s begin our meeting.
句 （原因）
导 4. I’ll speak slowly so that you can understand me. ( 目的 )
入 5. So clever was he that he was able to work out all the
A. Before B. when C. that D. until
5. (06辽宁) He was about halfway through his
meal _C_____a familiar voice came to his ears.
A. why B. -where C. when D. wh1i1le
（2）while的用法
A. while只能指一段时间，从句中的动词必须是延续性动词。强调
某一段时间内主句动作发生，相当于during the time that....;从句 常用进行时态。
For example: ①当别人工作时，请不要这么大声说话。 Please don’t talk so loud while others are working. ②当我在做作业时，妈妈在做饭。 My mother was cooking while I was doing my homework.
状语从句重难点
翻译： It is 3 years since I began to smoke.
(自从我开始抽烟以来).
I smoked.
when = and then, 意为“这时…. 就在这时 ….”。（并列连词，连接两个分句）常用句 型： 1. be doing sth. when …… 2. be going to do sth when … 3. be about to do sth. when…… 4. had just done sth. when …… 5. be on the point of doing sth. when…… 6. be+介词短语+when...
Ⅳ _____ since 的用法： ①、引导状语从句时，主句用现在完成时或现在 完成进行时，从句中用一般过去时。 I’ve been living here ______ since I came to Beijing. I have written home four times _____I since came here. ②、常用句型： It is five years since _______ I began to learn English. it is (has been)…..+ since +一般过去时
②.1.I was wandering in the street ______ when
suddenly a dog bit me. 2.I was going to go out _____ when a man came to visit me.=I was about to go out ______ when a man came to visit me.=I was on the point of going when a man came to visit me. out _____ 3. I had just got up ______ when a man came to visit me. 4..Chuck was on a flight across the Pacific when suddenly his plane crashed. Ocean _______
初中英语九种状语从句归纳总结
初中英语九种状语从句归纳总结一、时间状语从句（Time adverbial clauses）时间状语从句用来表示一个动作或事件发生的时间。
常见的引导词有：when（当…时候）、while（当…的时候）、as（当…时候）、before （在…之前）、after（在…之后）、since（自从…以来）、until（直到…为止）、as soon as（一…就…）、whenever（无论何时）等等。
例如：- She likes to listen to music while she is cooking.（她喜欢一边做饭一边听音乐。
）- He went to bed after he finished his homework.（他做完作业后去睡觉了。
）二、地点状语从句（Place adverbial clauses）地点状语从句用来表示一个动作或事件发生的地点。
常见的引导词有：where（在哪里）、wherever（无论在哪里）等等。
例如：- I will meet you at the place where we first met.（我会在我们第一次见面的地方见你。
）三、方式状语从句（Manner adverbial clauses）方式状语从句用来表示一个动作或事件发生的方式。
常见的引导词有：as（以…方式）、as if（好像）、as though（好像）等等。
例如：- She sang the song as if she was performing on stage.（她唱歌的时候好像在舞台上表演一样。
）- He spoke English as though he was a native speaker.（他讲英语好像是母语一样。
）四、原因状语从句（Reason adverbial clauses）原因状语从句用来表示一个动作或事件发生的原因。
常见的引导词有：because（因为）、as（因为）、since（因为）、as long as（只要）等等。
状语从句重点难点归纳课件
状语从句的分类
• 6. As long as you don’t lose heart, you’ll succeed. (条件) • 7. Try as he might, he could not find a job. ( 让步 ) • 8. The old lady treats the boy as if he were his own son. ( 方式 ) • 9.He is taller than I am.( 比较 )
问题5: 1. (03年北京) He made a mistake, but then he corrected the situation ______ C it got worse. A. until B. when C. before D. as 2. (04福建) Scientists say it may be five or six years ______ C it is possible to test this medicine on human patients. A. since B. after C. before D. when 3. (06四川)－Why didn’t you tell him about the meeting? A could say a －He rushed out of the room____I word. A. before B. until C. when D. after 4. (05北京春) It is almost five years ______ B we saw each other last time. A. before B. since C. after D. because
7. (04年江苏) ______ A I accept that he is not perfect, I do actually like the person. A. While B. Since C. Before D. Unless
高中九大状语从句详细解析+例句
状语从句Adverbial ClauseI 定义和分类一、定义在复合句中充当状语的从句叫状语从句。
状语从句通常由从属连词或起连词作用的词组引导。
试比较下列两句句子：1.I will return the book to him tomorrow. 我明天会把书还给他。
2.I will return the book to him when I meet him. 我见到他时会把书还给他。
分析在句1中，副词tomorrow作为时间状语在修饰动词return。
在句2中出现了两个谓语动词，分别是return和meet，表示有两句句子存在。
句2中的when I meet him取代了句1中tomorrow的位置。
when作为状语从句的引导词（即从属连词）连接起了主句I will return the book和从句I meet him两部分。
在分析主从句时，可以通过确定谓语动词和连词来将长句变为短句，从而便于理解句子的意思。
二、分类状语从句根据它表达的意思不同，可以分为以下基本的九类：1.时间状语从句，例如：When he arrived home last night, it was just nine o'clock. 昨晚他到家时恰好九点。
2.地点状语从句，例如：I put the book back where it had been. 我把书放回了原处。
3.原因状语从句，例如：It is inexpensive to produce because it is made from corn.由于是玉米做成的，它的生产成本不高。
4.目的状语从句，例如：They took a subway in order that they might not be held up in the traffic.为了不被堵在路上，他们搭乘了地铁。
5.结果状语从句，例如：The village is so small that it cannot be shown in the map.这个村庄太小了以致于在地图上都找不到。
状语从句难点讲解
状语从句中的难点从句可分为时间、地点、原因、目的、结果、方式、让步、条件和比较状语从句，其中有些连词可引导多种状语从句，表达不同的意义；也有某一从句可用多个连词引导，表达相同的意义，这就使得状语从句成为一大难点，下面就容易引起混淆的引导词作简要介绍。
一、while常表示“当……的时候；然而；尽管”。
例如：The students were busy taking notes while they were listening to the lecture.The young mostly enjoy pop music while the old usually prefer classical.While there exists much unemployment in almost all cities, people with special skills are still in great demand. 注意：while 表示“尽管”时，相当于although / though / as，但while / although引导的让步状语从句不用倒装语序，though引导的状语从句可以倒装也可以不倒装，而as引导的状语从句则必须倒装。
如：Though the bride is happy / Happy though the bride is, she will feel homesick at the beginning.Happy as the bride is, she will feel homesick at the beginning. 二、until和till until和till都表示“直到”，常可互换，但till一般不用于句首，也不可用于强调句中。
1. until / till从句或短语与肯定的主句连用时，主句的谓语必须是延续性动词，表示主句的动作一直持续到until / till所表示的时间为止。
英语语法新思维：一张思维导图牢记9大状语从句
英语语法新思维：一张思维导图牢记9大状语从句-CAL-FENGHAI.-(YICAI)-Company One1英语语法新思维：一张思维导图牢记9大状语从句何谓状语?联想两个成语，写景状物和难以名状。
状就是描述的意思。
状语通常是副词性的，用来修饰谓语动词。
描述谓语动词这个动作所发生的时间，地点，原因，结果，方式，条件等。
如果用一个完整的句子来做状语，这就是状语从句。
状语从句种类和相应从属连词如下：1) 时间状从：相关例句请点击扩展资料1和扩展资料2回顾前文《一张图牢记连词最大难点：时间状语从句的连词（15=1+2+3+4+5）》2) 地点状从：① Where there is a will, there is a way.在有意志力的地方，就有一条路。
=有志者，事竟成。
②Wherever there is smoke, there is a fire.在任何有有烟的地方，一定有一堆火。
=无风不起浪。
写作技巧：在写作中，我们可以化用套用句式而不是简单的引用原句。
比如在一场地震中，一方有难八方支援，人间有真情人间有大爱。
我们可以说：Where there is love, there is hope.哪里有爱，哪里就有希望。
3) 原因状从①—Why are you late —Because I missed the early bus.—你为什么迟到—因为我没赶上早班车。
② Since/Now that everyone is here, let's begin.既然大家都来了（大家都知道的事实，显而易见的原因），让我们开始吧。
注：表因为的短语，to和of介词后加名词不能连接句子。
3to： thanks to, owning to, due to3of: because of, as a result of, on account of.4) 结果状从① I took an umbrella, so that I didn't get wet in the rain.我带了把伞，因此我没淋到雨。
202X年中考英语状语从句-重点难点
202X年中考英语状语从句-重点难点状语从句是高中英语中的重点内容之一，也是中考英语中的难点。
在中考中，经常会涉及到状语从句的考查，所以娴熟把握状语从句的用法和留意事项是格外重要的。
以下是我总结的关于状语从句的重点和难点。
一、状语从句的定义状语从句是一个附属从句，用来修饰或限制主句中的动词、形容词、副词等成分，起到状语的作用。
状语从句一般由关系副词（where、when、why）或关系代词（that、which、who、whom、whose、as）引导。
二、状语从句的分类依据状语从句的意义和功能，可以将状语从句分为时间状语从句、地点状语从句、缘由状语从句、目的状语从句、条件状语从句、结果状语从句和方式状语从句等。
1. 时间状语从句时间状语从句用来表示主句中动作或状态发生的时间。
常用的引导词有when、while、as、before、after、since、until等。
例如：- I was doing my homework when my friend called me.(当我的伴侣打电话给我时，我正在做作业。
)- After I finished my homework, I went to bed.(我做完作业后去睡觉。
)- He has been studying English since he came to this school.(自从他来到这所学校，他始终在学习英语。
)第1页/共5页地点状语从句用来表示主句中动作发生的地点。
常用的引导词有where、wherever等。
例如：- Please go wherever you like.(请去你宠爱的地方。
)- I will meet you at the place where we agreed.(我会在我们商定的地方见你。
)3. 缘由状语从句缘由状语从句用来表示主句中动作发生的缘由。
常用的引导词有because、since、as等。
英语语法状语从句的归纳总结
英语语法状语从句的归纳总结Ability is not the only criterion, but character is the criterion.英语语法状语从句的归纳总结在复合句中修饰主句或主句中的某一成分的从句叫状语从句..状语从句通常由从属连词或起连词作用的词组引导;有时甚至不需要连词直接和主句连接起来..状语从句根据它表达的意思不同;可分为时间、地点、原因、目的、结果、条件、方式、比较、让步等九类..一、时间状语从句时间状语从句是表示时间关系的从句..可以引导时间状语从句的连词很多;根据意义和主从句之间的时间关系;通常可分为以下几种情况：A．when; while; as; wheneverwhen; while; as表示主句谓语作和从句的谓语动作同时发生或几乎同时发生..1．when①when表示点时间时;从句中用短暂性动词；表示段时间时;用持续性动词..When I got home; my family were already having dinner.我到家的时候;全家已在吃晚饭..when表示点时间When they were still talking and laughing; the teacher came in. 当他们还在说笑的时候;老师进来了..when表示段时间He waved a hello when he saw her.当他看见她的时候;就挥手打了个招呼..when表示点时间When you think you know nothing; you begin to know something.当你认为自己一无所知的时候;就开始知道一些事情了..when表示段时间注意：当when意思是正当……时候and at that moment时;when只能跟在前一分句之后..He was about to go to bed when the doorbel rang.他正要上床;忽然门铃响了..They were watching the World Cup when suddenly the lights went out.他们正看着世界杯比赛;突然灯灭了..They had just arrived home when it began to rain.他们刚到家;天就开始下雨了..②有时when表示虽然;尽管的含义;相当于although或since..He walks when he might take a taxi.尽管可以打的;但他还是步行..How can you hope for mercy yourself when you show none既然你不宽恕别人;你自己又怎能希望得到别人的宽恕呢2．while①while通常表示一段时间;从句中宜用持续性动词作谓语..Strike while the iron is hot.趁热打铁..She fell asleep while she was reading the newspaper.她在看报的时候睡着了..②while有时可以作并列连词;表示对比;可译成……而……..I am fond of English while he likes maths.我喜欢英语而他却喜欢数学..We slept while the captain kept watch.我们睡觉而上尉担任警戒..③while有时可引导让步状语从句;意思是虽然..While they love te children; they are strict with them.虽然他们都爱他们的孩子;但却对他们要求严格..提示：虽然during 与 while 意思很相近;但是during是介词;不能引导从句.. 3．as①as表示点时间时;从句中用短暂性动词；表示段时间时;用持续性动词..as和when两者经常可以通用..The thief was caught as when he was stealing in thesupermarket.小偷在超市行窃时被逮住了..I saw Jim as when he left the meeting room.吉姆离开会议室时候我看到了他..②as表示一边……一边……;强调从句和主句中两个动作交替进行或同步进行..They talked as they walked.他们边走边聊..He looked behind from time to time as he went.他一边走;一边不时地往后看..③as表示随着As time goes on; it's getting warmer and warmer.随着时间的推移;天气变得越来越暖了..As spring warms the earth; al flowers begin to bloom.随着春回大地;百花开始绽放..4．when; while; as的用法区别①只有当从句表示的是段时间;即其谓语动词有持续性特征时;这三者可以通用互换..I got the news on the radio when while as I was having breakfast.我在吃早饭的时候从收音机里获悉这一消息..②在下列情况下;三者彼此之间不能替换使用：a．as更强调同一时间或紧接的一前一后或伴随着的变化..We listened to the singer sing as he played the guitar.我们听着歌星边弹吉它边演唱..I thought of it just as you opened your mouth.你一张嘴我就知道你要说什幺As he grew older; he became less and less active随着他年龄的增长;他变得越来越不活泼了..提示：状语从句可放在主句之前或之后;放在主句之前时一般用逗号与主句分开..有时可置于主句中间;前后用逗号..b．when更强调特定时间;还可表示从句中的动作先于或后于主句的动作..When I had given Mary the spare ticket; I found my own already gone.当我把多余的票给了玛丽时;我才发现我自己的票已不知去向..从句动作发生在主句之前;注意主从句的时态When I finally got there; he meeting had been on for ten minutes.当我最终赶到那里时;会议已开始十分钟了..从句动作发生在主句之后;注意时态 c．while从句只能表示延续的动作或状态或主从句中动作的对比..She thought I was talking about her daughter; while in fact;I was talking about my daughter. 她以为我在谈论她女儿;而事实上;我在谈论我的女儿..d．若表示两个短促动作几乎同时发生时;用as场合多于when.. As he finished his speech; the audience burst into applause. 他结束讲话时;观众爆发出雷鸣般的掌声..5．whenever whenever是when的强势语;它描述的不是一次性动作;而是经常发生的习惯性动作..You are always welcome whenever you come.无论你何时来都欢迎..Whenever we met with diffiulties; they came to help us.每当我们遇上困难的时候;他们就来帮我们..B． before; after1．beforebefore表示在一段时间之前..I must finish all the work before go home.回家之前我必须干完所有的活..You must first learn to walk before you try to run.在想要跑以前;你得先学会走..He had learned English for three years before he went to London.他去伦敦之前已学了三年英语..提示：before 从句往往带有否定的含义..He ran off before I could stop him.我还没来得及阻止他;他就跑掉了..Take it down berore you forget it.趁着还没忘记的时候就记录下来..必背： before 常用句型 It is was will be beforeIt wil be five years before we meet again.五年以后我们才能再见..It will be not long before you regret what you have done.不用过多久你就会对你所作所为感到后悔的..It was not long before I realized I was wrong.不久我就意识到我错了..It was minutes before the police arrived.过了几分钟警察才到..2．afterafter表在一段时间之后..Let's play football after school is over.放学后我们踢足球吧..The sun came out soon after the storm stopped.暴风雨过后不久;太阳出来了..C．till; until1．untiltill用于肯定句时;表示直到为止;主句必须为持续性动词.. We shall wait until till he comes back.我们将一直等到他回来.. 注意它们的拼写Everything went well untiltill that accident happened.直到发生那意外之前;一切都正常..2． not untiltill表示直到才 ;主句通常要用短暂动词;这时until和till可用before代替..I didn't leave until till before she came back.直到她回来;我才离开的..Bells don't ring till until you strike them.铃不打不响..Peopl do not know the value of their health till until before they lose it. 人们直至失去了健康才知其可贵..3．当not until位于句首时;主句中的主语、谓语要使用倒装语序..Not until she stopped crying did I leave. 直到她不哭了;我才离开的..注意： until引导的从句可以放在主句之前或主句之后;但till从句一般不放在句首.. 4．在强调句型中一般只能用until;不用till.. It was not until she took off her drk glasses that Irecognized her.直到她摘下墨镜;我才认出她..D．since; ever since1．since自……以来..表示动作从过去某一点时间一直延续到说话时间为止..主句中通常为延续性动词的现在完成时;since从句中一般用短暂性动词的一般过去时..It has been just a week since we arrived here.我们到这儿刚刚一星期..Where haveyou been since I last saw you自上次我见过你之后;你去了哪里Since she was young; she has been collecting stamps.她自年轻时起就一直集邮至今..提示：有时since 从句中也可以用延续性动词;注意它的译法..Tom is now working on the farm.It's two years since he was a college student.汤姆现在农场上班;他大学毕业已有两年了..2．ever since 从那时起直至现在;此后一直..表示说话者强调主句动作或状态持续时间长;语气比since强..Ever since they got married in 1950; they have lived happily.自一九五零年结婚以来;他们一直生得很幸福..3．since还可以用作副词或介词..The big clock was damaged during the war and has been sienteversince.这只大钟在战争中损坏了;从此就一直不响了..My uncle went to Tibet in the 1950s. He has been living thereeversince.我叔叔五十年代就去了西藏;从那以后他一直生活在那里..You have made great achievements in your work since graduation. 你们自毕业以来已经在工作中取得了巨大成就..E．as soon as as soon as...可译为一……就……;用来表示主从句的动作是紧接着发生的.. He will come and see you as soon as he can.他一有空就来看你..He rushed home as soon as he got the good news.他一得到这个好消息就奔回家..必背：一……就……还可以用onupon doing 结构来表示..On arriving home he called up Lester. = As soon as he arrived home; he called up Lester. 他一到家就给莱斯特打电话.. F． immediately instantly directly 相当于as soon as;从句中用一般过去时态..They phoned her immediately they reached home.他一到家马上就给她打了电话..I recognized her instantly I caught a glimpse of her.我一看见她就把她认出来了..We came directly we got your telephone.我们一接到你的电话就赶来了..G．the moment; the minute; the instant; the second 这几个名词短语也可用作连词;直接引导时间状语从句;表示一…就… ..He said he'd turn on TV th moment he got home.他说他一到家就打开电视机..Tell him I need to see him the minute he arrives.告诉他;他一到我就要见他..The second the bell rang; the students rushed out of the classroom.铃一响;学生就冲出了教室..H．hardly scarcely when; no sooner than这两个短语都表示刚……就……;可以互换;主句通常用去完成时..He had no sooner started out than he felt homesick.他刚出发就想起家来..He had hardly started his speech when someone rose to refute his points.他刚开始发言;就有人站起来反驳他的论点..注意：当hardly; scarcely; no sooner 位于句子的开头时;主句须用倒装语序..Hardly had she fallen asleep when a knockat the door woke her up.她刚要睡着;忽然敲门声把她吵醒..No sooner was the frost off the ground than the work began. 地上的霜一消散;人们就开始工作了..I．once once作连词时;也相当于as soon as;但它含有的条件意味更浓;它引导的从句较短..Once you begin; you must continue.一旦开了头;你就应当继续下去..Once you see him; you will neer forget him.你一旦见过他;就不会忘了他的..J．next time; the first time; the last time; every time 等Be sure to call on us next time you come to town.下次你进城一定来看我们..He left me a good impression the first time I met him.我第一次见他时;他给我留下了好印象..Every time I see him he looks miserable.我每次见到他;他都是一付痛苦的表情..The last time I spoke to Bob; he seemed happy enough.上一次我见到他时;他看上去很开心..K．by the time by the tine 也可以引导时间状语从句;意为到时为止;主句一般要用完成时态..By the time he was fourteen; Einstein had learned advanced mathematics all byhimself.爱因斯坦到十四岁时就自学完了高等数学..从句为一般过去时;主句要用过去完成时I shall have finished my work by the time you return.在你回来之前我将会做完我的活儿..从句为一般现在时;主句要用将来完成时二、地点状语从句地点状语从句通常由where; whereverwhere的强势语和everywhere引导;是表示空间关系的状语从句..A． wherewhere 在……地方;去……地方Wuhan lies here the Yangtze and the Han River meet.武汉位于长江和汉水汇合处..Where there is a will; there is a way.有志者;事竟成..I found my books where I had left them.我的书在我原来放的地方找到了..You'd better make a mark where you have any questions.哪儿有问题;你最好在哪儿做个记号..这里where引导的从句不是定语从句注意：在地点状语从句之前;不要使用介词..误You should put the book at where it was.正You should put the book where it was.你应该把书放在原来的地方..误We should go to where we are needed most.正We should go where we are needed most.我们应该到最需要我们的地方去..B.whereverwherevr在任何……地方;无论哪里Wherever you go; you should do your work well.不论到什么地方;都要把工作做好..You may sit down wherever you like.你爱坐哪儿就坐哪儿..C.everywhereEverywhere they went; they were kindly receivd.他们每到一处都受到了友好的接待..三、原因状语从句原因状语从句是表示原因和理由的从句..引导原因状语从句的有as; because; since; now that; considering that; seeing that等.. A．becausebecause因为Because I like it; I do it.因为我喜欢;所以我才干..He couldn'thave seen me; because I was not there.他不可能见过我;因为当时我不在那儿..比较： because 和for的区别..1．for 是并列连词;只用于连接表示原因的分句;因此不能用于句首..because表示原因时;可位于句首..误For he did not obey the rules; he was punished.正Because he did not obey the rules; he was punished.由于他不遵守规章制度;他受到了处..2．for 表示的是推断解释;because强调动作发生的直接原因..It must have rained last night; for the ground is wet.昨晚肯定下雨了;因为地面是湿的..不可用because;因为地面湿不是天下雨的原因The day breaks; for the birds are singing.天亮了;因为鸟在叫..不可用because;因为鸟叫不是天亮的原因He went to bed early; because he was tired由于他累了;所以他很早就上了床..直接的理由He must be tired; for he went to bed early.他肯定累了;因为他很早就上了床..间接的推断3．在强调结构It iswas that和关联词not but 引导的原因状语从句中;宜用because..It's because he helped you that I'm prepared to help him. 正是因为他帮助过你;所以我乐意去帮助他..He decided to give up thechance of going abroad; not because he did not want to but because his wife was ill.他决定放弃出国的机会;不是因为他不想去;而是因为他妻子病了..B． since since 因为;既然..引导的从句大多置于句首;主从句的时态一般相同..Since you have no licence; you are not allowed to drive.因为你没有驾驶执照;所以不允许你开车..Since you are al here; let's try and reach a decision.既然大家都来了;咱们就设法做出一个决定吧..C．as as 由于..一般多用于句首..As she was ill; she didn't come to the party.由于病了;她没来参加晚会..As he was not well enough; I had to go without him由于他身体欠佳;我只好不带他去了..As it rained; we all stayed at home.由于下雨我们都呆在家里..C． because; since; as 的区别1．because语气最强;表达的是未知的新信息;一般置于主句之后;也可以放在主句之前;用逗号隔开..在回答why引导的特殊疑问句时;或在强调结构It iswas that 和关联词not but 引导的原因状语从句中;要用because..另外;because还常和副词just; merely等连用.. 2．since 往往表示的是已知的客观事实;或分析后的推理;引导的从句大多置于句首;主从句的时态一般相同..3．as 表示的理由最弱;只是对主句的附带说明;重点在主句..as从句通常放在主句前.. Just because he doesn't complain; you mustnot suppose that he is satisfied.你不可只因他不抱怨就以为他满足了..You shouldn't get angry only because some people speak ill of you.你不该仅仅因为有些人说了你的坏话就生气..Since you're not interested; Iwon't tell you about it.既然你不感兴趣;那我就不告诉你了..As you are unable to answer perhaps we should ask someone else. 因为你不能回答;也许我们该问一问别的人..注意： because等词不能与 so连用..误Because he was careless; so he failed in the exam.正Because he was careless; he failed in the exa.由于他粗心;所以他考试不及格..正He was careless; so he failed in the exam.由于他粗心;所以他考试不及格..E．now that now that 既然;因为..that可以省略..Now that dinner is ready; go and wash your hands.既然饭已好了;洗手去吧..Now you mention it again; I do remember.既然你又提起此事;我倒回想起来了..F．conidering that; seeing that 这两个词和since; now that意思相近;都有鉴于…事实;考虑到…. 的意思..Seeing that quite a few people were absent; we decided to put the meeting off.由于好些人都没到会;我们决定延期开会..seeing 后面的that可以省略Considering that they are just beginners; they are doing quite good job.考虑到他们才刚刚学做;他们干得算很不错的了..G．not that but that 这一结构相当于汉语的不是因为…而是因为…Not that I don't like the film; but that I have no time for it. 不是因我不喜欢看这部电影;而是因为我没有时间看..状语从句二四、目的状语从句目的状语从句是表示行为目的的从句..引导目的状语从句的主要连词有that; so;so that; so that; in order that等;从句中常常使用一些情态动词;如can; could; may; might; should等..A．that; so that;in order that表示为了;以便;一般放在主句之后..that语气较弱;用的较少;多用so that..Let's take the front seats that we may se more clearly.我们坐前排吧;这样我们可以看得更清楚些..Man does not live that he may eat; but eats that he may live. 人生存不是为了吃饭;而吃饭是为了生存..They hurried so that they might not miss the train.他们为了不误火车;才急急忙忙的..In order that everyone present might hear her clearly; she raised her voice again.为了使在场的每个人都能听清楚;她再次提高了声音..注意：当主从句的主语一致时;so that和in order that引导的目的状语从句可以转换成相对应的动词不定式结构..We got upearly so that we would arrive in time.为了能及时赶到;我们起得很早..They hurried so that they might not miss the train. → They hurried so as not to miss the train.他们为了不误火车;才急急忙忙的..Betty saved money in order that she could uy a portable computer. → Betty saved money in order to buy a portable computer.贝蒂存钱是为了买一台手提电脑..B．in case; lest; for fear that 几个短语都表示万一;惟恐;含有否定的意义..Better take more clothes in case the weather is cold.最好多带些衣服以防天气会冷..Take an umbrella in caseit rains.以防下雨;带把伞..五、结果状语从句结果状语从句是表示事态结果的从句..引导结果状语从句的连词有：that; so that; so that; such that等..结果状语从句通常置于主句之后..A．so; that; so that这三个词都可以引导结果状语从句..so that最为常用;so或that常用于口语或非正式文体中..What has happened tha you look so worried发生了什幺事;使你显得如此担心I didn't plan the work well; so thatso I didn't finish it in time.我没把工作计划好;结果没按时完成..so that从句常用逗号与主句隔开The room was packed with people; so that we couldn't get in. 房间里挤满了人;我们进不去..C． so...that so...that 如此……以致……..其引导的果状语从句有如下四种结构：1．so + 形容词副词 + that-从句The village is so small that it cannot be shown in the map. 这村子太小;所以这地图上没有..The wind was so strong that we could hardly move forward.风刮得那么大;我们简直寸步难行..2．so + 形容词 + aan + 单数名词 + that-从句It was so hot a day that tey all went swimming. 天是那么的热以致他们都去游泳了.. He made so inspiring a speech that everybody got excited.他发表了如此鼓舞人的演讲以致大家都很激动..3．so + manyfew +复数名词+ that-从句I have had so many falls that I am black and blue all over. 我摔了许多跤;以至于浑身青一块;紫一块..He has so few friend that he often feels lonely.他朋友很少;所以经常感到孤独..4．so + muchlittle +不可数名词 + that-从句I had so little money then that I couldn't even afford a used car.我当时囊中羞涩;甚至连一辆二手车都买不起..He drank so much wine last night that he felt terrible.昨晚他喝了那么多的酒;他觉得很不舒服..5.在so + 形容词副词 + that-从句结构中;如将so + 形容词副词位于句首;主谓语要倒装..So excited was he that she could not say a word.他很激动;一句话都说不出来..So loudly did he speak that even the people in the next room could hear him.他说得很响;连隔壁的人都能听见..D． such... that such...that 如此……以致……..其引导的结果语从句有如下四种结构： 1．such + aan + 形容词 + 单数可数名词 + that-从句Jenny is such a clever girl that all of us like her very much 詹妮是如此聪明的女孩;以至我们都非常喜欢她..We left in such a hurry that we forgot to lock the door.我们走得匆忙;把门都忘了锁了..2．such + 形容词 +复数名词+ that-从句He gave suchimportant reasons that he was excused.他说出了这么重要的理由;得到大家的谅解..They are such interesting novels that all of us want to read them.这些是十分有意思的小说;大家都想看..3．such + 形容词 + 不可数名词 + that-从句He made such rapid progress that the teacher praised him.他的进步很快;老师表扬了他..H shut the window with such force that the glass broke.他关窗子用了那么大的劲;玻璃都碎了..提示：such+aan+形容词+单数名词结构可以和so +形容词+aan+单数名词结构互换..He told us such a funny story that we all laughed. → He told us so funny a story that we all laughed.他给我们讲了一个如此有趣的故事;大家都笑.. →The story he told us was so funny that we all laughed. 他给我们讲的故事是如此有趣;大家都笑了..E． such that such that可以连用;意思是是这样...以致..Mother's answer was such that she didn't say yes and shedidn't say no.妈妈的回答就是这样;既没有同意也没有不同意..His anger was such that he lost control of himself. 他勃大怒;以致不能自制..比较：such ...that ... 引导的是结果状语从句.. such ...as ...引导的是定语从句请参考第10章定语从句..She had such a fright that she fainted.她吓得昏了过去..Luckily such earthquakes as can cause a lot of damage do no happen very often.很幸运;这种破坏性很大的地震并不经常发生..关系代词as在定语从句中作主语六、条件状语从句..条件状语从句是表示主句动作发生的前提或条件的从句..条件状语从句分为真实条件状语从句和非真实条件状语从句见第3章..引导条件状语从句的有if; unless; so as long as; as so far as; on condition that; in case; suppose; supposing等..条件状语从句中的谓语动词一般要用现在时或过去时代替一般将来时或过去将来时A．if if表示正面条件;意为如果..If you ask hm; he will help you.如果你向他请求;他会帮助你..Difficulties are nothing if we are not afraid of them.如果我们不怕困难;困难就算不了什么了..If I do not understand what he says; I always ask him.我不懂他的话时; 总是去问他..if = when比较： if only和only if的对比.. if only 解释但愿;要是……就好了;表示一个不可能实现愿望;要用虚拟语气.. only if 解释只有;等于only on condition that;从句用陈述语气..Only if you heat ice; it turns to water.只有当你给冰加热;它才会变成水..If only I knew要是我知道该多好..B．unless unless = if not; 表示反面条件;意思是如果不、除非.. They will go tomorrow unless it rains.除非明天下雨;否则他们会去的..They will go tomorrow if it doesn't rain.I won't let you in unless you show me your pass.如果你不出示通行证;我就不让你进来..= I won't let you in if you don't show me your pass.注意： if...not和unless通常是可以换用的..但在下列情况下;两者是有区别的：1．unless多引导真实条件句;if not可以引导真实条件句或非真实条件句..Hewon't be able to pass the final exams unless he works hard. 除非他努力;否则就通过不了期末考试..He won't be able to pass the final exams if he doesn't work hard.如果他不努力;就通过不了期末考试..He would pass the final exams if he worked hard.要是他努力的话;他就会通过考试..非真实条件句..含义是Hedoesn'twork hard.2．如果主句描述的是情感或情绪活动方面的内容;if not结构不能换成unless..如：I'll be quite glad if she doesn't come this evening.她今晚如果不来我很高兴..3．unless引导的状语从句可用否定结构;而if not引导的从句不可再用否定结构..Don't ask me to explain again unless you really don't understand.不要再叫我解释了;除非你真的不懂..4．uless能作为介词使用;相当于except;而if not不可以.. Nothing will come out of it unless disaster.这种事除非引起灾祸之外不会有什么结果..C．so long as; as long as; on condition that 这几个短语意思差不多;都表示只要;条件是……..AsSo long as we don't lose heart; we'll find a way to overcome the difficulty.只要我们灰心;我们就能找到克服困难的方法..You may use the room on condition that so long as you cleanit afterwards.只要你用完后打扫干净;你就可以使用这个房间..D．in case in case 既引导目的状语从句;也可以引导条件状语从句;等于if it happens that..In case I forget; please remind me of my promise.如果我忘了;请提醒我所做的承诺..Send s a message in case you have any difficulty.万一你有什么困难;请给我们一个信儿..E．providing; provided that; supposing; suppose that; given that 这几个短语意思相近;有如果;只要;假如等意思..Given that they are inexperienced; they've done a good job. 考虑到他们缺乏经验;他们的工作已做得很好了..that可以省略rovided Providingthatwe invite him; he would surely come to dinner.假如我们邀请他的话;他肯定会来吃饭的..SupposeSupposing we can't get enough food; what shall we do 假设我们弄不到足够的食物;那我们怎幺办仅用于疑问句七、方式状语从句方式状语从句是描述动作方式的从句..方式状语从句常由as; as if as though等词引导;通常位于主句之..A． as; just as 这两个连词的意思是如……;正如……一样..just as 比as 语气要强一些..Do in Rome as the Romans do.入乡随俗..Leave things as they are.让一切顺其自然..Please do as you are told.请按照人家告诉你做的去做..也可说Please do as told.Balloons float in the air just as boats do on the sea.气球在空中就如同船浮在海面上一样..注意：在口语中;还可用like来代替as;引导一个方式状语从句.. She is doing the work exactly like I want her to她正在完全按照我要她的那样在做这项工作..Do you make bread like you make cakes你做面包的方法是不是和做点心一样B．as if; as though 由as if 或as though引导的状语从句可以用陈述语气表示可能符合事实的情况;也可以用虚拟语气的过去式表示现在不符的或与事实相反的情况见第3章虚拟语气..She looks as if she is ill.看上去她好象是生病了..The boy plays piano as though he has a natural ear for music. 这孩子弹起钢琴来家好象天生很懂音乐似的..。
中考英语难点状语从句详解
状语从句的概念: 用一个句子作状语来修饰动词和形容词，以表明动作发生或状态存在的时间、地点、原因等，这个句子就叫做状语从句。
状语从句的分类：状语从句共分为九大类，包括：时间、地点、原因、条件、让步、目的、结果、方式、比较状语从句。
下面分别讲解：
一、时间状语从句
概念：用来表示时间的状语从句，由when, while, as, till, until， before, after, since等引导。
由于时间状语从句的引导词所表示的意思并非一致，不同引导词表达不同的时间，它们在句子中对应的时态、语态等也有所不同。
例如：
1. when /while引导的时间状语从句
when引导的从句的谓语动词通常是瞬间动词，也可以是延续性动词。
从句动作可与主语动作通常先后发生也可同时发生。
I was writing when my sister came back.( come是瞬间动词，只能用when引导，不能用while)
九、比较状语从句
1.比较状语从句常由as…as，not so(as)，than引导。
比较从句部分常为省略句。
如: You are as clever as he is.你和他一样聪明。
He studies harder than any other student in our class(does).他比班上其他任何人都学习努力。
，
2.通常把the more…the more…结构也归为比较状语从句，意为：“越…越”。
如：The harder you study, the better grades you will get.你越努力学习，就会取得越好的成绩。
高考英语考纲解读与热点难点突破：状语从句
专题10 状语从句【高考考纲解读】状语从句有时间、地点、原因、目的、结果、条件、方式、比较和让步状语从句，共9种，是每年必考的语法项目，主要考查连词的判断选用，主句与从句谓语动词的时态运用。
其中，以对时间状语从句、条件状语从句、让步状语从句和结果状语从句的考查最为频繁。
近几年，重点考查的连词有：when，while，as，before，unless，however等。
近三年，高考有考查状语从句、宾语从句、名词性从句交叉运用的题型出现。
【重点、难点剖析】一、时间状语从句(一)when，while与as引导的时间状语从句1．when，while与as引导时间状语从句的区别When they heard the news that Shenzhou Ⅸ had been sent up into space successfully，they jumped with joy.听到“神舟”九号成功发射的消息，他们高兴地跳了起来。
While I was reading，he came in.我正在看书时，他进来了。
The students sang as they walked.学生们边走边唱。
2．while还可以作并列连词，表示对比，意为“而，却”。
Liu Wang is from Shanxi while Liu Yang comes from Henan.刘旺来自山西，而刘洋来自河南。
3．when也可以作并列连词，意为“这时，那时”。
We were having a meeting when someone broke in.我们正在开会这时突然有人闯了进来。
(二)before与since引导的时间状语从句1．before与since的常用句式It will be two years before he leaves the country.再过两年他才会离开这个国家。
It wasn't two years before he left the country.不到两年他就离开了这个国家。
九大状语从句记忆口诀
九大状语从句记忆口诀
状语从句是英语语言中使用频率较高的一种语法结构，它能够帮助我们更加准确、简洁地表达自己的意思。
在状语从句中，主要包含了时间、条件、原因、目的、方式、结果、让步、比较和地点等九大类型。
为了方便大家记忆，下面为大家介绍一下九大状语从句的记忆口诀：
1. 时间状语从句须谨记，连词有when，while，as，before，after，since，until，till
2. 条件状语从句也很重，if，unless，even if 须牢记
3. 原因状语从句用because，since，as，now that 选择
4. 目的状语从句有so that，in order that，for the purpose of，以及以to，in order to，so as to 开始
5. 方式状语从句是how，as if，as though，just as，in the way that
6. 结果状语从句用so that，such that，so…that，以及以therefore，consequently，as a result 开始
7. 让步状语从句指尽管如此，先列出although，though，even though，while，whereas
8. 比较状语从句是as…as，not so (as)…as，the same…as，than，rather than
9. 地点状语从句要牢记，连词有where，wherever，anywhere，everywhere，any place
以上就是九大状语从句的记忆口诀，希望能够帮助大家更好地记忆和掌握这一语法结构，从而提高自己的英语表达能力。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
状语从句分类：（九大类）时间、地点、原因、条件、让步、结果、目的、方式、比较。
Part 1 时间状语从句：最常用的连接词：When，while，as , before , after , as soon as, until, not until次常见的连接词:The moment\minute, immediately, hardly…when, no sooner than问题一：We wew swimming in the lake_______suddenly the storm started.A\when B\while C\until D\beforeHe was about to tell me the secret ______someone patted him on theshoulderA\as B\until C\while D\when-Did Jack come back early last night? -Yes,it was not yet 8:00_____he arrived home.A\before B\when C\that D\untilHe was about halfway through his meal______a familiar voice cameto his ears.A\why B\where C\when D\while一、时间状从中连接词when的用法小结：1、when引导的时间状从的谓语动词可以是可延续的，也可以是表短暂性的动词，可用于主句和从句动作同时发生或从句动作先于主句动作。
例：When the film ended,the people went back.When I lived there,I used to go to the seashore on Sundays.2、可用作并列连词，其意义是“那时，这时”，相当于and at this\thattime.常用于以下句式：was about to do sth. … when…\be (on the point of) doing sth. …when…(刚要…这时突然…)e.g.I was about to stop pretending to being listening to the class to listen towhat the teachers said when Mr. Li shouted at me so loudly that the whole class can hear.3、还可以表示原因“既然”，相当于since,considering that.如：It was foolish of you to take a taxi when you could easily walk there in 5 minutes.问题二：The cost of living in Glasgow is among the lowest inBritain,_____the quality of life is probably one of the highest.A\since B\when C\as D\while______I accept that he is not perfect,I do actually like the person.A\While B\Since C\Before D\Unless二、时间状从中连接词while 的用法小结：1、while 引导的动作必须是持续性的，强调某一段时间内，主从句动作同时发生，或主从句中的动作或事物在从句中的动作或事情的进展过程中发生。
如：Please don’t talk so loud while others are working.2、while作为并列连词，意为“然而，却”，表示对比。
I was reading while my father was watching TV.3、while可表示尽管,相当于althoughI have to give up because of you while I like it so much.问题3：_________I get older ,I get more optimistic.He hurried home,looking behind _____he went.______he was going out,it began to rain.A\Since B\When C\As D\While三、只用as,不用when或while的情况1、用于表示同一个人的两种动作交替进行，指“一边…一边…”，如：The girl sings as she goes to school.2、表示两个同步发生的动作或行为，如：As time went by,she became more and more beautiful.3、表示两个动作紧跟着发生，如：As he was going out,is began to rain,4、接在名词后面表示某一个年龄段时。
如：As a young man, he was active in sports.四、连接词when,while,as的用法区别:1、while引导的时间状语从句的谓语动词必须是可持续的，而when引导的时间状语从句的谓语动词既可以是可持续的，也可以是表短暂性动作的动词。
When\While he was eating his breakfast,he heard the door bell rang.When I stopped my car,a man came up to me.(while不可用)2、从句动作发生在主句动作之前时，只能用when 引导，不可用while\as,如：When you have finished your work,you may have a rest.3、表示“随着……”,连词用as,不用when\while,如：As the election approached,the violenve got worse.4、如果主句表示的是短暂性的动作，从句用延续性动作的进行时态表示一段时间内正在进行的动作时，三者可互相交换使用。
如：When\While\As I was walking down the street,I came across an old friend of mine.五、其他引导时间状语从句的连接词：1、一些词，如themoment\minute\instant,immediately,directly,instantly,hardly…when,no sooner…than等，也可因的一个时间状语从句，相当于as soon as的意思。
如：e.g.We will come across this situation the moment (when)your most important relatives leave you.It is not wise that we stop our lesson immediately (when) the bell rings if we can’t finish our task.2、一些含有time 的名词短语，如every\each\next time,by the time 等，以及the day\year,the morning等也可以引导一个时间状语从句。
如：e.g.So many thousands of people died everytime there was an outbreak.The day he returned home,his father was already dead.Next time you come ,please bring your ID card.3、如果hardly 或no sooner或scarcely置于句首，句子必须用部分倒装结构。
如：Hardly had I got home when it began to rain.问题4：-Was his father very strict with him when he was at school?-Yes,hehas never praised him_______he became one of the top students inthe class.A、after B\unless C\until D\whenA good storyteller must be able to hold listener’s curiority ______hereaches the end of the story.A\when B\unless C\after D\untilIt was not ______she took off her dark glasses ______I realized shewas a famous film star.A\when;that B\until;that C\until;when D\when;then六、till,until和not…until用法：1、until\till引导时间状语从句用于肯定句中时，主句的动词时延续性动词，表示动作或状态一直持续到until\till所表示的时间，意为“某动作一直持续到某时间点才停止”，译为“直到…为止”。
You may stay here until the rain stops.2、用于否定句时，主句谓语动词时非延续性动词，从句为肯定，意为“直到…才”，如：He wouldn’t go to bed till/until he had finished the work.3、until 可以置于句首，till不行。
如：Until you told me , I had no idea for it.4、not…untill句型中的强调和倒装说法：It is\was not until that…Not until+从句+助动词+主句。
例：e.g.it was not until you told me that I had some idea for it.Not until you told me did I hace any idea for it.七、连接词before的小结：1、词义：The American Civil War lasted four years before the North won in the end. (在…之后，才…)He rushed out of the room before I could say a word.(…还没来得及，就…) It was evening before we reached the little town of Winster.(在…之前就…) He make a mistake,but then he corrected the situation before it got worse.(没等…就…)2、其他句型：1、it+（will/would）be +时间段+before… “过了（多长时间）才…”It will be some time before we know whether the drug takes effect or not.It was quite a few years before he finally finished the novel.2、it+（will/would）be not +时间段+before… “过不了多久就…”It will be not long before a helicopter arrived on the scene to rescue the surviors of the air crash.It wasn’t 2 years before you go to join in the final examination.3、it+be+时间点+before… “…发生时，是…(时间)”It was not yet 8:00 before he arrived home.八、连接词since的用法：注：since的用法主要有两点：一是表示“自从…以来”，二是表示“既然”。