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1、语法复习六：状语从句由从句担任的状语，在句子中可修饰谓语（或其它动词）、形容词、副词或是整个句子，它可以用来表示时间、地点、原因、目的、结果、条件、方式、比较、让步等。状语从句是一较大 的语法项目，也是近几年高考题中常见的一个重要试点。高考中已考查了时间、让步、地点、条 件、目的等状语从句，这些从句仍是今后高考热点，应作充分准备。同时对方式状语从句也应引 起重视。（一）时间状语从句表示时间的状语从句可由when, as, while, when ever, after, before, till （un til）, since, on ce, as soonas （或 the moment ）
2、, by the time, no soonerthan, hardly （scarcely）等引导hen, every tire.g. When I came into the office, the teachers were having a meeting.He started as soon as he received the n ews.Once you see him, you will n ever forget him.No sooner had I gone to bed tha n I went to sleep.（二）原因状语从句原因状语从句是表示原因或理由的，引导这
3、类从句的最常用的连词是because, since, as , nowthat （既然）等，for表示因果关系时（它引导的不是从句）为并列连词，语气不如because强。e.g. He is disappo in ted because he did nt get the positi on.As it is rainin g, I will not go out.Now that you men ti on it, I do remember.（三）地点状语从句引导地点状语从句的连词是where和wherever等。e.g. Sit wherever you like.Make a mark
4、 where you have a questi on.（四）目的状语从句引导目的状语从句最常用的词（组）是 so, so that （从句谓语常有情态动词），in order that, in case （以防，以免）等。e.g. Speak clearly, so that they may un dersta nd you.She has bought the book in order that she could follow the TV less ons.He left early in case he should miss the trai n.（五）结果状语从句结果状语从句
5、是表示事态结果的从句，通常主句是原因，从句是结果。由so that （从句谓语一般没有情态动词）,sothat, such等at导。e.g. She was ill, so that she didn t attend the meeting.He was so excited that he could not say a word.She is such a good teacher that every one admires her.（六）条件状语从句条件状语从句分真实性（有可能实现的事情）与非真实性（条件与事实相反或者在说话者看 来不大可能实现的事情）条件句。引导条件状语从句的词（组
6、）主要有if, unless, so （as） long as, oncondition that, so （as） far as, if only （ = if ）。注意：条件从句中的if 不能用 whether 替换。e.g. If he is not in the office, he must be out for lun ch.You may borrow the book so long as you keep it clea n.So far as I know （据我所知） ，he will be away for three mon ths.You can go swimmi
7、ng on condition that （ = if ） you don go too far away from the river bank.If he had come a few minu tes earlier, he could have see n her.（七）让步状语从句让步状语从句可由 although, though, as, even if （tho ugh）, however, whatever, whether or,matter who （whe n, what,等引导。注意：as引导的让步状语从句一般是倒装的。e.g. Though he is a child
8、, he knows a lot.Child as he is, he knows a lot.Whatever （ = No matter what ） you say, I ll never change my mind.（八）方式状语从句方式状语从句常由 as, as if （though）, the way, rather than 等引导。e.g. You must do the exercise as I show you.He acted as if nothing had happe ned.（九）比较状语从句比较状语从句常用 tha n, so （as） as, the mo
9、re等引e导loree.g. I have made a lot more mistakes tha n you have.He smokes cigarettes as expe nsive as he can afford.The busier he is, the happier he feels.（十）使用状语从句时要注意的几个问题1、在时间和条件（有时也在方式、让步等）从句中，主句是一般将来时，从句通常用一般 现在时表示将来。e.g. We II go outing if it doesn t rain tomorrow.I ll write to you as soon as I
10、get to Shangai.2、有些时间、地点、条件、方式或让步从句，如果从句的主语与主句主语一致（或虽不一致，是it），从句的谓语又包含动词be，就可省略从句中的“主语 + be”部分。e.g. When （he was） still a boy of ten, he had to work day and ni ght.If （you are） asked you may come in.If （it is） necessary I ll explain to you again.3、 注意区分不同从句：引导的是什么从句，不仅要根据连词，还要根据句子结构和句意来 判别。以where为例，
11、能引导多种从句。e.g. You are to find it where you left it.（地点状语从句）Tell me the address where he lives.（定语从句，句中有先行词）I don t knowhere he came from.（宾语从句）Where he has gone is not known yet.（主语从句）This place is where they once hid.（表语从句）练习、状语从句一、用横线划出下列句子中的状语从句，并指出是哪种状语从句：1. Child as she is, she knows a lot of th
12、in gs.2. The more I can do for the class, the happier I ll be.3. He talks as if （as though） he knew all about it.4. He is such a good teacher that the stude nts love and respect him.5.I shall go to the park uni ess it rains.6. No sooner had I got home tha n it bega n to rain.7. Where there is water,
13、 there is life.8. He studied hard so that he could catch up with his classmates.9. Since you are very busy, I wont trouble you.10. Even if (though) I fail. I II never lose heart.11. Once you beg in the work, you must continue.12. I will find her wherever she may be.13. Now that youve come, youd bett
14、er have dinner with us.14. He was so excited that he could nt fall asleep.15. We must do everyth ing as he tells us.16. In dia is much bigger tha n Japa n.17. No matter whe n you come, you are warmly welcome.18. As (So) long as you work hard, you can catch up with the other classmates.二、用适当的连词填空：1.
15、Dr. Bethune (白求恩)came to Chinahe was fifty.2. He bega n to workhe got there.3. Lets begi n our meet ingevery one is here.4. I like the En glish people,I dont like their food.5. you go in Chi na, you can see smili ng faces.6. He did nt come to the lecture,he was very busy.7. we had eno ugh time, we walked to the cin ema.8. They will help youyou meet with difficulty.9. we came to the uni versity, we have lear nt quite a lot.10.I did nt join them yesterday eve ningI had to go to an importa nt meeti ng.11. We would try to get
