(完整版)初中狀語從句考點(diǎn)歸納

1、狀語從句狀語從句指句子用作狀語時(shí)，起副詞作用的句子。它可以修飾謂語、 非謂語動(dòng)詞、 定語、 狀語或整個(gè)句子。 根據(jù)其作用可分為時(shí)間、 地點(diǎn)、 原因、條件、目的、結(jié)果、讓步、方式和比較等從句。狀語從句一般 由連詞(從屬連詞)引導(dǎo)，也可以由詞組引起。從句位于句首或句中時(shí) 通常用逗號(hào)與主句隔開，位于句尾時(shí)可以不用逗號(hào)隔開。1. 時(shí)間狀語從句(1)時(shí)間狀語從句常用 when, as （當(dāng).時(shí)候） , while, before, after, since, till, until, as soon as 等連詞來引導(dǎo)。例如：He had learned a little Chinese before

2、he came to China.After he finished middle school, he went to work in a factory.(2)在時(shí)間狀語從句里，主句用將來時(shí)態(tài)時(shí)，從句通常不用將來時(shí)態(tài)，用現(xiàn)在時(shí)態(tài)表示將來的動(dòng)作或狀態(tài)。（主將從現(xiàn)）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)在帶有 till 或 until

3、 引導(dǎo)的時(shí)間狀語從句的主從復(fù)合句里，如果主句用肯定式，其含義是“一直到時(shí)”，謂語動(dòng)詞只能用延續(xù)性動(dòng)詞。如果主句用否定式，其含義是“直到才”, “在以前不”, 謂語動(dòng)詞可用瞬間性動(dòng)詞。例如：The young man read till the light went out.Lets wait until the rain stops.We wont start until Bob comes.Dont get off until the bus stops.2. 條件狀語從句(1)條件狀語從句通常由 if, unless(除非)引導(dǎo)。例如：What shall we do if it snow

4、s tomorrow?Dont leave the building unless I tell you to.(2)在條件狀語從句里，謂語動(dòng)詞通常用現(xiàn)在時(shí)態(tài)表示將來的動(dòng)作或狀態(tài)。（主將從現(xiàn)）例如：（必考）Ill help you with your English if I am free tomorrow.He wont be late unless he is ill.(3) “祈使句 + and (or)+ 陳述句” 在意思上相當(dāng)于一個(gè)帶有條件狀語從句的復(fù)合句。例如：Hurry up, or youll be late.=If you dont hurry up, youll be l

5、ate.Study hard and you will pass the exam.=If you study hard, you will pass the exam.3. 原因狀語從句(1)原因狀語從句通常由 because, since, as 引導(dǎo)。例如： He didnt come to 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，語氣最強(qiáng)。 B

6、ecause 引導(dǎo)的原因狀語從 句多放在主句之后。 As 和 since 語氣較弱，一般用來表示明顯的原 因。由as 和 since 引導(dǎo)的原因狀語從居多放在句首。例如： -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 不能同用在一個(gè)句子里。4. 結(jié)果狀語從句(1)結(jié)果狀語從句由 sothat, suchthat 引導(dǎo)。例如： He is so poor

7、that he cant buy a bike for his son. She is such a good teacher that everybody likes her.(2)sothat 與 such.that 可以互換（可能會(huì)考）。例如：在由so.that 引導(dǎo)的結(jié)果狀語從句中， so 是副詞，與形容詞連用。 其結(jié)構(gòu)是: “.so + 形容詞（副詞） + that + 從句”。例如： Mother lives so far away that we hardly ever see her.在由such that 引導(dǎo)的結(jié)果狀語從句中，such 是形容詞，它修飾的 可以是單數(shù)或復(fù)數(shù)可

8、數(shù)名詞，也可以是不可數(shù)名詞；名詞前面可以帶 形容詞，也可不帶。如果是單數(shù)可數(shù)名詞，前面需加不定冠詞 a 或an。例如：It was such a hot day that nobody wanted to do anything. 有時(shí)上述兩種結(jié)構(gòu)是可以互換的。例如：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 match that

9、 nobody wants to miss it. =The match is so important that nobody wants to miss it. (3)如果名詞前由many, much, little, few等詞修飾時(shí)，只能用so, 不用 such。例如：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 with you.5. 比較狀語從句比較狀語從句通常由 as as（否定 not so/

10、as.as）, 比較級 + than 等連詞引導(dǎo)。例如：Tom runs faster than John does.This classroom is as big as that one.6. 目的狀語從句(1)目的狀語從句通常由 so that, in order that 引導(dǎo)。例如： 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

11、we might save time.(2)so that 既可引導(dǎo)目的狀語從句，又可引導(dǎo)結(jié)果狀語從句。區(qū)別這 兩種從句的辦法有兩個(gè)：1)目的狀語從句里往往帶有情態(tài)動(dòng)詞can, could, may, might 等。2)從意思上看，目的狀語從句往往表示的目的很明確。例如： Speak clearly so that they may understand you. (目的狀語從句) Jack is badly ill so that he has to rest. (結(jié)果狀語從句)7. 讓步狀語從句(1)讓步狀語從句通常由although, though 等連詞引導(dǎo)。例如： Though h

12、e is young, he knows a lot.Although I am tired, I must go on working. (2)although(though)與 but 不能用在同一個(gè)句子中。 例如：我們不能說： Though it was raining hard, but he still went out. 應(yīng)該說： Though it was raining hard, he still went out.或 It was raining hard, but he still went out.8. 地點(diǎn)狀語從句地點(diǎn)狀語從句常常由 where 來引導(dǎo)。例如：Go w

13、here you like.Where there is a will, there is a way.易混引導(dǎo)詞while, when 的區(qū)別：1.when 既可以指時(shí)間點(diǎn),與瞬間動(dòng)詞連用，也可以指時(shí)間段 ，與延續(xù)性動(dòng)詞連用（ =while）。如：When he came in, his mother was cooking.When (While) we were at school, we went to the library every day.While 表示時(shí)間段,因此， while 從句的謂語動(dòng)詞要用延續(xù)性動(dòng) 詞。如：Please dont talk so loud while

14、 others are working.2 Because,as,since 的區(qū)別：Because 用于表示直接原因,回答 why 提出的問題，語氣最強(qiáng)； As 用于說明原因, 著重點(diǎn)在主句，常譯成由于；since 表示顯然的 或已知的理由或事實(shí)，常譯成既然。如：Water is very important because we cant live without it.He didnt come yesterday as his mother was ill.Ill do it for you since you are busy.【實(shí)例解析】1.You will stay health

15、y _ you do more exercise, such as running and walking.A. if B. how C. before D. where2. -Shall we go on working?-Yes, _ I prefer to have a rest.A. when B. if C. because D. though3.None of us knew what had happened _ they told us about it.A. when B. until C. after D. though4.-I hope youll enjoy your

16、trip, dear!-Thank you, mum. Ill give you a call _ I get there.A. until B. as soon as C. since D. till考點(diǎn)精煉一. 單項(xiàng)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? -I think he will come if he _ free tomorrow.A. comes; is

17、 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 helpC. will fall; help D. falls; helping4. I dont remember _ he worked in that city when he was young.A. what B. which C

18、. 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; until D. not; after7. I was late for class yesterday _ there

19、 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. more careful; fewestC. more careful; fewer D. more careful; les

20、s10. You should finish your lessons _ you go out to paly.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 have any questions.A. which B. that C. where D. though13. The teache

21、r 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. too lovely a dayC. so lovely a day D. such lovely a day16. Mary had _ m

22、uch 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. Since C. While D. As19. _ well you can drive, you must drive carefully.A.

23、So long as B. In order thatC. No matter how D. The moment20. Write to me as soon as you _ to Beijing.A. will get B. get C. getting D. got真題演練(2010 河北省卷 42. 1) Peter likes reading a newspaper_he is having breakfast.A. until B. while C. because D. though (2010.江蘇省鹽城市 12. 1)Many students didnt realize

24、the importance of study_they left school.A.when B.until C.as D.after(2010 四川省內(nèi)江市 39. 1)I dont know if it_tomorrow.If it_,we wont go on a picnic.A.rains;rains B.will rain;rains C.will rain;will rain(2010 山東省濰坊市 29. 1)You have to leave now_you can catch the early bus.A.so that B.as soon as C.because D

25、.if(2010 浙江省衢州市 23. 1) You should go over your test paper _ you hand it in .A. before B. though C. because D. as soon as(2010 江蘇省無錫市 12. 1)Scientists say it may be a few years _it is possible to test the new medicine on patients.A.because B.after C.before D.since(2010 年上海市 37. 1)We will have no wate

26、r to drink _we dont protect the earth.A.until B.before C.though D.if（ 2010 江蘇省揚(yáng)州市 41 ）-Could we play football in your playground,Sir?-No,_you have the principals permission（校長許可） . A.if B.unless C.because D.since（ 2010 四川省成都市 35. 1 ）I wont be able to understand what you say,_you speak too quickly.A.

27、if B.though C.because（ 2010 浙江省湖州市 22 ，1 ）-Is everyone here today?-No.Tom is at home_he has got a bad cold. A.because B.if C.until D.unless（ 2010 山西省 27 ，1 ）In summer , food goes bad easily _ it is put in the refrigerator.A. until B. if C. unless（ 2010 河南省 25 ，1 ）_its difficult to make her dreamcome

28、 true ，she never gives upA.Though B.Unless C.Because D.If（ 2010 山東省萊蕪市 27 ，1 ）-I hear Jack Chan will come to Laiwunext week.-Really? _ he comes, my younger sister will be veryhappy,A If B Until C Unless D Before（ 2010 貴州省銅仁市 35 ，1 ）- May I go to the concert with you?- Im afraid not _ you have a tick

29、et, because I have only one.A. since B. if C. unless D. though（ 2010 山東省菏澤市 27 ，1 ）Mary spends a lot of money onclothes _ her family is not rich.A. because B. though C. if D. so（ 2010 黑龍江省雞西市 29 ，1 ）Usually, we dont know how important something is _ we lose it.A. or B. until C. as soon as（ 2010 廣西省定西市 15 ，1 ）She had a stomachache_she ate something bad.A. so B. because C. or D. although(2010 福建三明 29. 1)Many children like fried chicken _it is unhealthy food.A.if B.because C.although（ 2010 廣西南寧 32.