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1、初中英语语法English Grammar状语从句第十五章 状语从句 【考点直击】1. 时间状语从句2. 条件状语从句3. 原因状语从句4. 结果状语从句5. 比较状语从句6. 目的状语从句7. 让步状语从句8. 地点状语从句【名师点睛】用来修饰主句中的动词，副词和形容词的从句叫状语从句。根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句， 原因状语从句，结果状语从句，比较状语从句，目的状语从句，让步状语从句。1. 时间状语从句(1)时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来
2、引导。例如：It was raining hard when got to school yesterday.While he was doing his homework, the telephone rang.As he walked along the lake, he sang happily.He had learned a little Chinese before he came to China.After he finished middle school, he went to work in a factory.(2)在时间状语从句里，通常不用将来时态，用现在时态表示将来
3、的动作或状态。例如：Ill ring you up as soon as I get to New York.I will tell him everything when he comes back.He wont believe it until he sees it with his own eyes.(3)在带有till或until引导的时间状语从句的主从复合句里，如果主句用肯定式，其含义是“一直到时”，谓语动词只能用延续性动词。如果主句用否定式，其含义是“直到才”, “在以前不”, 谓语动词可用瞬间动词。例如：The young man read till the light wen
4、t out.Lets wait until the rain stops. We wont start until Bob comes. Dont get off until the bus stops.2. 条件状语从句(1)条件状语从句通常由if, unless引导。例如：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。例如：Ill help you with your English if am free
5、 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。例如：Hurry up, or youll 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。例如：He didnt come to
6、school because he was ill.As it is raining, we shall not go the zoo.Since you cant answer the question, 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。例如：-Why arent going there?-Because I dont want to.As he h
7、as 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. 结果状语从句(1)结果状语从句由sothat, suchthat, so that引导。例如：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
8、see it.(2)sothat语such.that可以互换。例如：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”。例如：He was so glad 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 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
9、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。例如：It was such a hot day that nobody wanted to do anything.He had such long arms that he could almost touch the ceiling.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。例如：It was such a wonderful film that all of us wanted t
10、o see it again.=The film was so wonderful that all of us wanted to see it again.It is such an important match 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。例如：Soon there were so many deer that they ate up all
11、the wild roses.He has so little time that he cant go to the cinema with you.5. 比较状语从句比较状语从句通常由asas, 比较级 + than等连词引导。例如：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引导。例如：We started early so that we could catch the first train.He stud
12、ies hard so that he could work better in the future.We used the computer in order that we might save time.(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。例如：Speak clearly so that they may understand you. (目的状语从句)Jack is badly ill so tha
13、t 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。例如：Though he is young, he knows a lot.Although I am tired, I must go on working.(2)although(though)不能用在同一个句子中。例如：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 rain
14、ing 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。例如： Go where you like. Where there is a will, there is a way.【实例解析】1. (2004年北京市海淀区中考试题) You will stay healthy _ you do more exercise, such as running and walking. A. if B. how C. before D. where 答案：A。该题考查的是引导状语从句的从属连词的选择。从意思上看，从句应是一个条件状语从句，
15、在这四个选项中只有if能引导条件状语从句，所以选A。2. (2004年江西省中考试题) -Shall we go on working? -Yes, _ I prefer to have a rest. A. when B. if C. because D. though 答案：D。该题考查的是引导状语从句的从属连词的选择。从意思上看，只有选though才能说得通。3. (2004年徐州市中考试题) None of us knew what had happened _ they told us about it. A. when B. until C. after D. though 答案：
16、B。该题考查的是引导状语从句的从属连词选择。本句的意思是“在以前我们没人知道这件事。”要表达着一意思应用“notuntil” 这一句型。4. (2004年泉州市中考试题) -I hope youll enjoy your trip, dear! -Thank you, mum. Ill give you a call _ I get there. A. until B. as soon as C. since D. till 答案：B。该题考查的是引导状语从句的从属连词的选择。本题的意思是“一到那里，我就给你打电话。”要表达这个意思应选用as soon as。【中考演练】一. 单项填空1. _
17、 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? -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,
18、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 _ 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 co
19、ming6. The police asked the children _ cross the street _ the traffic lights turned green. A. not; before B. dont; when C. not to; 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
20、 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. more careful; fewest来源:学|科|网 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.
21、I hurried _ I wouldnt be late for class. A. since B. so that C. as if D. unless来源:学科网12. When you read the book, youd better make a mark _ you 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
22、 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. 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
23、. _ 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.来源:学#科#网Z#X#X#K A. With B. 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. Wri
24、te 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来源:学*科*网Z*X*X*K1. 不管他跟我开什麽玩笑，我都不生气。 I am not angry with him, _ _ _ jokes he _ on me.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 pa
25、rents 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-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 lear
26、ning 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
27、 Ming didnt come to school _ _ _ _.【练习答案】一. 1.A 2.C 3.B 4.C 5.A 6.C 7.D 8.C 9.C 10.A 11.B 12.C 13.B 14.A 15.C 16.B 17.A 18.D 19.C 20.B二. 1. no matter what; plays 2.so; that; regarded; as 3. as long as 4. as long as 5. so much that 6. Though she was busy 7. when he grows up 8.Whether its 9. If everyone makes a contribution 10. because he was ill