1、2. 条件状语从句（1）条件状语从句通常由if, unless引导。What shall we do if it snows tomorrow?Dont leave the building unless I tell you to.（2）在条件状语从句里，谓语动词通常用现在时态表示将来的动作或状态。Ill help you with your English if am free tomorrow.He wont be late unless he is ill.（3）“祈使句 + and （or）+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。Hurry up, or youll
2、 be late. =If you dont hurry up, youll be late.Study hard and you will pass the exam. =If you study hard, you will pass the exam.3. 原因状语从句（1）原因状语从句通常由because, since, as引导。He didnt come to school because he was ill.As it is raining, we shall not （不得；不应该）go the zoo.Since you cant answer the question,
3、Ill ask someone else.（2）because表示直接原因，语气最强。Because引导的原因状语从句多放在主句之后。回答由why提出的问题，只能用because。As和since语气较弱，一般用来表示明显的原因。由as和since引导的原因状语从居多放在句首。-Why arent going there?-Because I dont want to.As he has no car, he cant get there easily.Since we have no money, we cant buy it.（3）because和so不能同用在一个句子里。4. 结果状语从
4、句（1）结果状语从句由sothat, suchthat, so that引导。He is so poor that he cant buy a bike for his son.She is such a good teacher that everybody likes her.My pencil fell under the desk, so that I couldnt see it.（2）sothat语such.that可以互换。在由so.that引导的结果状语从句中，so是副词，与形容词连用。其结构是: “.so + 形容词（副词）+ that + 从句”。He was so gla
5、d that he couldnt say a word.The hall is so big that it can hold 2,000 people.Mother lives so far away that we hardly ever（几乎不，从来不） see her.在由suchthat引导的结果状语从句中，such是形容词，它修饰的可以是单数或复数可数名词，也可以是不可数名词；名词前面可以带形容词，也可不带。如果是单数可数名词，前面需加不定冠词a或an。It was such a hot day that nobody wanted to do anything.He had s
6、uch long arms that he could almost touch the ceiling.（天花板）He made such rapid progress that he did very well in the mid-term. 有时上述两种结构是可以互换的。It was such a wonderful film that all of us wanted to see it again.=The film was so wonderful that all of us wanted to see it again.It is such an important matc
7、h that nobody wants to miss it.=The match is so important that nobody wants to miss it.（3）如果名词前由many, much, little, few等词修饰时，只能用so, 不用such。Soon there were so many deer that they ate up all the wild roses.He has so little time that he cant go to the cinema（去看电影） with you.5. 比较状语从句比较状语从句通常由asas, 比较级 +
8、 than等连词引导。Tom runs faster than John does.This classroom is as big as that one.6. 目的状语从句（1）目的状语从句通常由 so that, in order that（为了，以便）引导。We started early so that we could catch the first train.He studies hard so that he could work better in the future.We used the computer in order that we might save tim
9、e.（2）so that既可引导目的状语从句，又可引导结果状语从句。区别这两种从句的办法有两个：1）目的状语从句里往往带有情态动词can, could, may, might等。2）从意思上看，目的状语从句往往表示的目的很明确。Speak clearly so that they may understand you. （目的状语从句）Jack is badly ill so that he has to rest. （结果状语从句）7. 让步状语从句（1）让步状语从句通常由although, though等连词引导。Though he is young, he knows a lot.Alt
10、hough I am tired, I must go on working.（2）although（though）不能用在同一个句子中。我们不能说：Though it was raining hard, but he still went out.应该说：Though it was raining hard, he still went out.或It was raining hard, but he still went out.8. 地点状语从句 地点状语从句常常由where来引导。 Go where you like. Where there is a will, there is a
11、 way.总结：状语从句分类及常用连词： 类别连词 时间状语从句when, whenever, while, as, before, after, since, till, once（一旦）地点状语从句where, wherever 原因状语从句because, since, as, for, now that（既然，由于）etc. （et cetera，等于and so on）目的状语从句in order that（为了，以便）, so that, that, etc. 结果状语从句sothat, so that, suchthat, that, etc. 条件状语从句if, unless,
12、 as（so）long as, etc. 让步状语从句though, although, even if, even though, however, whatever, as, etc. 比较状语从句asas, soas, than, etc. 方式状语从句as, as if, as though, etc. 练习一一. 单项填空1. _ hes old, he can still carry this heavy bag. A. Though B. Since C. For D. So2. -Do you know if he _ to play basket ball with us?
13、-I think he will come if he _ free tomorrow. A. comes; is B. comes; will be C. will come; is D. will come; will be3. In the zoo if a child _ into the water and cant swim, the dolphins may come up _ him. A. will fall; to help B. falls; to help C. will fall; help D. falls; helping4. I dont remember _
14、he worked in that city when he was young. A. what B. which C. where D. who5. We will stay at home if my aunt _ to visit us tomorrow. A. comes B. come C. will come D. is coming6. The police asked the children _ cross the street _ the traffic lights turned green. A. not; before B. dont; when C. not to
15、; until D. not; after7. I was late for class yesterday _ there was something wrong with my bike. A. when B. that C. until D. because8. Ill go swimming with you if I _ free tomorrow. A. will be B. shall be C. am D. was9. In the exam, the _ you are, _ the _ mistakes you will make. A. careful; little B
16、. more careful; fewest C. more careful; fewer D. more careful; less10. You should finish your lessons _ you go out to play. A. before B. after C. when D. while11. I hurried _ I wouldnt be late for class. A. since B. so that C. as if D. unless12. When you read the book, youd better make a mark _ you
17、have any questions. A. which B. that C. where D. though13. The teacher raised his voice _ all the students could hear him. A. for B. so that C. because D. in order14. He took off his coat _ he felt hot. A. because B. as C. if D. since15. It is _ that wed like to go out for a walk. A. a lovely day B.
18、 too lovely a day C. so lovely a day D. such lovely a day16. Mary had _ much work to do that she stayed at her office all day. A. such B. so C. too D. very17. _ I felt very tired, I tried to finish the work. A. Although B. Because C. As D. As if18. _ the day went on, the weather got worse. A. With B
19、. Since C. While D. As19. _ well you can drive, you must drive carefully. A. So long as B. In order that C. No matter how D. The moment20. Write to me as soon as you _ to Beijing. A. will get B. get C. getting D. got二. 根据中文意思完成下列英语句子1. 不管他跟我开什么玩笑，我都不生气。 I am not angry with him, _ _ _ jokes he _ on m
20、e.2. 布鲁斯太太对学生非常亲切，以至于学生把她当做母亲。 Mrs Bruce was _ kind to her students _ they _ her _ their mother.3. 只要我们竭尽全力，父母就会满意我们的表现。 Our parents will be pleased with our performance _ _ _ we try our best.4. 你一到上海就给我打个电话好吗？ Will you please call me _ _ _ you get to Shanghai.5. 这个七岁的女孩酷爱钢琴，以至于他已经坚持练习两年了。 The seven
21、-year-old girl likes playing the piano _ _ _ she has kept practicing for two years.6. 虽然她很忙，他还坚持自学英语。 _ _ _ _, she kept on learning English by herself.7. 他长大后相当一名记者。 He wants to be a journalist _ _ _ _.8. 无论刮风下雨，我们的老师总是第一个到校。_ _ windy or rainy, our teacher is always the first to get to school.9. 如果人
22、人为保护环境做出贡献，世界将会变得更美好。 _ _ _ _ _ to protecting the environment, the world will become much more beautiful.10. 李明昨天没来上学，因为他病了。 Li Ming didnt come to school _ _ _ _.练习二1 The meeting didnt start_ everyone was there.A. because B. until C. why D. if2 The boy _ to bed _ his mother came in.A. went not; unti
23、l B. didnt go; after C. went; until D. didn until3 I wont believe you_ I have seen it with my own eyes.A. before B. until C. after D. when4 He _ home _ she was satisfied _ his answer yesterday. A. didn until; with B. wasn after; to C. doesn before; with D. didn5 He _ back until the work _ done.A. is
24、nt; will be B. isn is C. wont be; will be D. won is6 They didnt start the work _ their teacher came back.A. until B. while C. as soon as D. if7. Tom will call me as soon as he _ Shanghai.A. arrives B. will reach C. arrives in D. get to8. Im sure hell come to see me before he _ Beijing.A. will leave
25、B. is leaving C. leave D. leaves9. I will tell him the news as soon as he_ back. A. come B. comes C. will come D. came10. Tom has got a watch. He _ it for two years. It _ by his father.A. has bought; was bought B. has got; is bought , C. was bought; has bought . D. has had; was bought 11. When he go
26、t to the station, the train _.A. left B. had left C. leaves D. has left12. The boy told his father what he _ in the street.A. saw B. have seen C. had seen D. see13.We _ TV when the telephone _.A. watched; was ringing B. were watching; rang C. watch; rings D. are watching; rang 14.By the end of last term, I_ ten books.A. had finished reading B. have finish reading C. had finish to read D. finish read15. I _ you for a long
