初中英语语法之连词专项练习.doc

初中英语语法连词词专项习题 Because,since,as,forbecause,as,for,since这几个词都是表示“原因”的连词，语气由强至弱依次为：becausesinceasfor;其中because,since,as均为从属连词，引导原因状语从句；而for是并列连词，引导并列句。1.because表示直接原因，它所指的原因通常是听话人所不知道的，其语气最强。常用来回答why的提问，一般放于主句之后，也可以单独存在。例如：(1)Istayedathomebecauseitrained.因为下雨我呆在家里。(2)BecauseLinglingwasill,shedidntcometoschool.玲玲因病，没有上学。(3)Whyissheabsent?她为什么缺席？Becausesheissick.因为她病了。此外，在强调句型中，只能用because。例如：(4)ItwasbecauseImissedtheearlybusthatIwaslateforschool.我上学迟到是因为我没有赶上早班汽车。2.since侧重主句，从句表示显然的或已为人所知的理由，常译为“因为”、“既然”，语气比because稍弱，通常置于句首，表示一种含有勉强语气的原因。例如：(1)Sinceheasksyou,youlltellhimwhy.他既然问你，那就告诉他为什么吧。(2)Sinceeveryoneishere,letsstart.既然大家都到齐了，我们就出发吧！(3)SinceIunderstoodverylittleJapanese,Icouldntfollowtheconversation.我日语懂得不多，因而听不懂对话。3.as是常用词，它表示的“原因”是双方已知的事实或显而易见的原因，或者理由不是很重要，含义与since相同，但语气更弱，没有since正式，常译为“由于，鉴于”。从句说明原因，主句说明结果，主从并重。例如：(1)Wealllikeherassheiskind.我们都喜欢她，因为她善良。(2)AsIhadacold,Iwasabsentfromschool.因为我感冒了，所以没去上课。(3)AsXiaowangwasnotready,wewentwithouthim.由于小王没有准备好，我们只好不带他去了。4.for用作连词时，与because相似，但它所表示的原因往往提供上文未交待过的情况。for不表示直接原因，表明附加或推断的理由，因此for被看作等立连词，它所引导的分句只能放在句子后部(或单独成为一个句子)，并且前后两个分句间的逻辑关系不一定是因果关系，其间用逗号隔开，且for不可置于句首，for的这一用法常用在书面语中，较正式。例如：(1)Thedaysareshort,foritisnowDecember.白天短了，因为现在已是十二月份。(2)Itmusthaverained,forthegroundiswet.(从“地面潮湿”作出“下过雨”的推测，但地湿并不一定是下雨所致,for不可以换为because。)(3)Thegroundiswetbecauseithasrained.(“下雨”是“地上潮湿”的直接原因。)前后两个分句间有一定的因果关系时(有时很难区分是直接原因，还是推测性原因)，for与because可以互换使用。例如：(4)Icouldnotgo,for/becauseIwasill.我没能去，是因为我病了。(5)Hefeltnofear,for/becausehewasabraveboy.他没有害怕，因为他是个勇敢的男孩。lBecause/asbecause引导的是必然原因，as引导一般原因。必然原因是指某事发生必会导致另一件事实。一般原因语气还有其因果关系不是很明显。以下两个句子请体会Theflooriswet,becauseitrainedthismorning.Astheflooriswet,itmightrainthismorning.(地板湿也可能是其他原因，以此看，as引导原因从句还有猜测的意味。)lBecause/for这两个词的意思很相近，通常是可以互换使用的。为了安全起见，最好用because引导从句，因为同because引导的从句相比，for引导的从句（英文中称为forclause）的用法要受到某些限制：1for引导的从句不能位于它所解释的动词之前：Becauseitwaswethetookataxi因为下雨，他叫了一辆出租车。（这里不能用for。）2for引导的从句不能位于not，but或任何连词之后：Hestole，notbecausehewantedthemoneybutbecausehelikedstealing他偷东西，并不是因为他想要钱，而是他有这种毛病。（这里不能用for。）3for引导的从句不能用于回答问题：Whydidyoudoit？IdiditbecauseIwasangry你为什么这么做？因为我生气才这么做的。（这里不能用for。）4for引导的从句不能单单用来复述已讲过的话，而必须包括新的内容：HespokeinFrenchShewasangrybecausehehadspokeninFrench他讲法语。因为他讲法语，她生气了。（这里不能用for。）但是可以说：Shewasangry，forshedidntknowFrench她生气了，因为她不懂法语。（这里用for是正确的，也可用because。）之所以有这些用法上的限定，其理由是for引导的从句不能直接说明某一特定动作发生的原因，而只能提供一些起帮助解释作用的附加说明。例句如：Thedayswereshort，foritwasnowDecember天短了，现在已是12月了。Hetookthefoodeagerly，forhehaseatennothingsincedawn他狼吞虎咽地吃了起来，因为他从天亮就没吃过东西。1. He can speak English_ Chinese.A. but B. also C. so D. and2. Physics is not so easy, _I like it very much.A. but B. or C. since D. because3. Will Tom wait for her at home _ at the library?A. or B. as C. so that D. both4. She has a son _ a daughter.A. but B. and C. so D. or5. Ill give her the gift _ she arrives.A. so B. before C. as soon as D. since6. Tom was _ill that we had to send for a doctor.A. so B. very C. and D. too7. The woman was_ angry_ she couldnt speak anything.A. neithernor B. eitheror C. bothand D. sothat8. _we got home it was very late.A. When B. While C. Because D. As9. We heard clearly_ she said.A. what B. which C. before D. because10. I cant sleep well at night, _I often feel very tired in the day.A. so B. because C. and D. or11. When youre learning a foreign language, use it, _ you will lose it.A. but B. or C. then D. and12. - Can you play football?- Yes, I can, _ I cant play it very well.A. or B. and C. but D. so13. Study hard, _ you will fall behind.A. and B. but C. so D. or14. My favorite is action movie _ I think its exciting.A. and B. because C. but D. so15. The boy is very smart, _ many of his classmates like him.A. but B. so C. or D. for16. He has never heard_ seen such a thing before.A. nor B. and C. or D. since17. _ John _I are policemen.A. Neither . nor B. Either . or C. Both . and D. Not only. but also18. Mr Smith teaches _well _ his lessons are not easily forgotten.A. very . that B. quite . but C. so . as D. so . that19. He didnt go to sleep _he finished his homework.A. till B. before C. after D. until20. I didnt buy the dictionary yesterday _ my aunt would give me one.A. until B. because C. if D. before21. The runner fell _ he quickly got up and went on running.A. or B. and C. but D. down22. Wait for me in the room _ I come back.A. until B. and C. so D. or23. Ill return the books to the library _ soon as possible.A. as B. so C. just D. but24. Go along the road, _ youll find the market at the end of it.A. when B. and C. or D. though25. Youll be late _ you dont get up early tomorrow morning.A. if B. when C. before D. until26. It was late. She washed her face _ went to bed.A. or B. and C. so D. but27.He shouted aloud _he ran alone.A. after B. before C. when D .as28.Please return the book to me _you come back.A. as soon as B. when C. while D. as29.Ring me up_ you come to my house.A. though B as C. before D .then.30. I must stop writing now ,_I have rather a lot of work to do.A .a B .so C. when D. since31.The bus didnt leave _ everyone get on .A .after B .while C .until D. when32.Ill leave a message _ he will know where we are .A .so that B. as soon as C. for D. that33. My sister is _young _he cant go to school .A, too , to B. enough; to C. so that D. as ;as34. His brother got up earlier _ he could catch the bus . A. as if B .so C . so that D .than35 .It is almost three years _I saw he last . A .when B. since C. after D. that36.-Im going to the supermarket .-Will you get me some chocolates _you are here ,mum .A .since B because C if D . while37 .Mr Green came to China in 2000,_he has lived here ever since. A . and B. or C .but D. for38 ._ they are brothers , they dont look like each other at all.A, Because B .Though C. When D, As39 .I know nothing about it _ my brother told me yesterday.A .because B. since C. until d. so40. He failed _ because he isnt clever _ because he didnt work hard.A. not only .but also B. both .and C. either or D. not but41.The teacher wondered why he had _questions.A. so much B .so many C such much D . such many42. We were swimming in the lake _suddenly the storm started .A. when B. while C until D . before43. We can_ see _touch the air .A .not only ,but also B .both, and C . either ,or D . neither ,nor44. You can_ stay at home _ go to my hometown with me .A. not ,only B. either and C .both or D. either or45. We left in _a hurry _we forgot to lock the door .A. so , so B. so ,that C . such ,that D . such so46. _Judy, you look so tired._Yes. I did not go to bed _ it was twelve last night.A . when B. unless C. until D. after47. She was so interested in the book that she has read it for three hours _ she realized it.A. until B. before C. after D .when48. Jack spend much money on books _ he is so rich.A. though B. when C. if D. because49John feel asleep _ he was listening to the music.A. after B. before C. while D. as soon as50. She does not feel like playing basketball now, _, she is not good at it.A. so B. or C. but D. besides51. Mother is ill,_ Father cooked for us instead.A. but B. or C. so D.and52.-Its 9 oclock now .I must go .-Its raining outside .Dont leave _it stops.A. when B. since C. while D .until53.Would you like to go to the concert with me?-Id love to _ I cant .A. or B. but C. so D. and54. -Our holiday cost a lot of money .-Did it ?Well ,that doesnt matter _you enjoyed yourselves.A. if B unless C while D. or55.He didnt come to school yesterday ,_he was ill.A. if B. because C. when D. before56.-Can you guess who will be the first to cross the finish line ?-Sandy. Jane didnt run so fast _ she did last time.A. than B. so C .that D as57 Nothing can stop the sandstorm _ more and more trees are planted.A. unless B. if C. when D. while58. I have to finish the work now _ I will fall behind others.A. and B. or C. but D. so59. D o you prefer apples _ grapes?A. to B. than C. or60. I met Miss Green _ I was walking across the bridge, but I did not say hello to him.A. before B. after C. until D. while61. I can not afford to buy a CD player _ it is too expensive.A. after B. though C. because D.until62. I would like to play football with you _ I have got a meeting now.A. and B. or C. but D. so63. Edison never give up, _ he failed many times.A. and B. though C. or D. so64. You should make a plan _ you do anything important.A. before B. after C. though D. until65. Forests help to keep water from running away, _ drought does not often happen.A. and B. but C. so D. though66. We all like Han Mei _ she is kind and helpful.A. so B. and C. because D. but67. We will not never give up our plan _ happens.A. however B. whatever C. whenever D. wherever68. The box is so heavy _ I have to ask someone to help me.A. to B. because C. that D. for69. It was so late, _ the farmers went on working in the field.A. and B. or C. so D. but70. The little boy is only six years old, _ he can make model wonderful cars.A. but B. so C. or D. and71. Shirley has passed the exam _ she is busy with her hard work.A. because B. when C. since D. though72. Linda was just going out shopping _ the telephong rang.A. while B. when C. after D. because73. I want to know _ Jack still lives in that house.A. that B. if C. weather D. where74. I bought a present for my friend, _ she did not like it at all.A. and B. but C. so D. or75.They did not start the work _ their teacher came back.A. until B. while C. as soon as D. if76. Hurry up! _ you will be late for the film.A. And B. But C. Or D. Because77. When you are learning English, use it, _ you or lose it.A. but B. or C. then D. and78. The doctors tried their best to save the patients life _ failed.A. or B. so C. but D. because79. Study hard _ you are sure to have a good result.A. or B. and C. for D. but80. Sam was reading a newspaper _ his brother fell on the ground.A. when B. whether C. as soon as81. I tried to call you _ I heard from him, but you were not in.A. since B. while C. until D. as soon as82. Jack is only four years old, _ he can draw beautiful pictures.A. but B. so C. or D. since83. I hardly know anything about it _ you told me.A. since B. after C. until D. when84. I have not see her _ she left Lanzhou.A. while B. when C. since D. from85. WeiHua always helps others _ she is very busy.A. though B. if C. because86. None of us knew what had happened _ we heard the news.A. after B. until C. when87. I left my umbrella in my room. Could you wait _ I go back to get it.A. when B. if C. while D. before88. He is so tired that he fell asleep _ he went to bed.A. as if B. even though C. ever since D. as soon as89. Come a little earlier next, _ you will miss the best the part.A. and B. but C. or D. till90. The Yellow River is _ the Changjiang River.A. not so long as B. as long a