初中条件状语从句-精讲和练习含答案.

1、初中英语：条件状语从句一条件状语从句的概念条件状语从句，即在某种条件下，一件事情可能发生。在英语中由连接词if 或 unless 等引导的状语从句叫做条件状语从句。条件是指某一件事情实现之后（状语从句中），一件事情（主句）才能发生，通常译作“假如，只要，如果”等意思。条件状语从句中，主从句的时态要遵循“主将从现”的原则。即，主句是将来时态时，从句用一般现在时代替将来时态。二 .条件状语从句的引导词1.Ifconj .如果，假如If you ask him， he will help you如果你请他帮忙，他会帮你的。If you fail in the exam， you will let h

2、im down如果你考试不及格，你会让他失望的。2.unless conj.除非,若不,除非在的时候（ if .not.）You will fail to arrive there in time unless you start earlier.Unless it rains, the game will be played.除非下雨如果你不早点动身,比赛将照常进行。, 你就不能及时赶到那儿。3.so/as long as conj. 只要You may borrow my book as long as you keep it clean.只要你保持书的清洁，你就可以把我的书借去。三关于条

3、件句的时态，常见的有以下三种情况：1、条件状语从句的主句是一般将来时，那么从句常常用一般现在时。When I grow up, I ll be a nurse and look after patients. 我长大后要当一名护士，照顾病人。2、如果主句是祈使句，那么从句通常要用一般现在时。If you want to have a chat ,call me up.如果你想聊天，打我电话。3、如果主句是含有情态动词时，根据需要从句多用一般现在时。You should be quiet when you are in the reading room.在阅览室时应保持安静。四知识拓展1 在以

4、when， before， as soon as等引导的时间状语从句，也适用 “主将从现 ”原则，即如果主句是一般将来时，从句则用一般现在时 。I'll tell her the good news when she comes back.当她回来的时候，我将把这个好消息告诉她。she will give you a call as soon as she returns.她一回来就会给你电话。2.If条件句的同义句：祈使句，and /or+ 将来时态的陈述句。Work hard ,and you will make great progress.=If you work hard,y

5、ou will make great progress.如果你努力学习，你才会取得大的进步。Hurry up, or you will be late.=If you don t hurry.youup will be late.如果你不快点， 你就要迟到了。条件状语从句练习精讲（含答案） .单项选择1. If you _ to the party, you ll have a great time.A. will goB. wentC. goD. going2. It will be a long time _ Peter _ his work.A. since, has finishedB

6、. after, finishesC. when, will finish3. What will father _ us from Japan?A. takeB. bringC. carryD. make4. Weifang is famous _ kitesA. forB. toC. onD. with5 I _ her the answer if she _me.A. can tell, will askB. will tell, will askC. would tell, askD. before, finishes.D. will tell, asks6. What are you

7、 going to do tomorrow?-We ll go to the library tomorrow if it _.A. isn t rainB. rainC. won t rainD. doesn t rain7. Do you know when he will come back tomorrow?-Sorry, I don t know. When he _ back, I ll tell you.A. comesB. will comeC. comeD. may come8. What will you do if you _ to the old folk s home

8、 visit?A. goB. wentC. goingD. will go9. If I eat _ food, Ivery fatll. beA. too manyB. many tooC. too muchD. much too10. I ll give the book to him if he _ here next Sunday.A. will comeB. comesC. is comingD. came11. There _an English film in our school tomorrow.A. is going to haveB. will haveC. is goi

9、ng to beD. has12. Could you tell us where _ ？A. will the next Olympic Games heldB. the next Olympic Games will be heldC. would the next Olympic Games be heldD. the next Olympic Games would be held13. When my mother returned last night, I _a book.A. readB. am readingC. was readingD. am going to read1

10、4. What _ you _ when it began to rain?A. do, doB. were, doingC. are, doingD. did, do15. I ll wake you up when he _back.A. willB. is going to comeC. comesD. comeAnswers ：1-5 CDBAD6-10 DAACB11-15 CBCBC二、用所给词的适当形式填空1. If you _(feel) tired, you _ (have) to have a rest.2. Where _ he _(see) the film if he

11、 _(have) time?3. If there _ (be) fewer trees, there _ (be) more pollution.4. He _ (dress) more casually if he _ (not work) on weekends.5. If Marcia _ (live) alone, she _ (keep) a pet parrot.6. Lana _ (buy) a new dress if the old one _ (be) out of style.7. The twins _ (fight) if they_ (argue).8. I _

12、(have) a bake sale if I _ (need) money for education.9. Peter _ (send) me a beautiful souvenir if he _(visit) Spain.10. If Mr. Green _ (say) I am hard- working, my parents _ (feel) glad.11. I _ (go) to the beach if it_ (not rain) this week.12. _they _ (have) a match if the P.E. teacher _ (be) busy?1

13、3. He _ (write) a letter to his grandparents if he _ (get) his report card this week.14. If she _ (get) up late, she _ (not catch) the early bus.15. Peter _ (major) in English if he _(pass) the exams in Peking University.Answers ：1 feel， will have2 willseehas3 are, will be4 will dresses,doesn t work

14、5 lives, will keep6 will buy, is7 will fight,argue8 will have, need9 will send,visits10 says,will feel11 will go,doesn t rain12 Will haveis13 will writes,gets14 gets, won t15 will major,passesIII 完成句子1.如果他到得晚了，会发生什么事情？What _ if he _ late?2. 如果努力学习， 你就会取得好成绩。If you_ _, you _ good _.3. 他如果看电视太久了，他的父母会

15、不高兴。If he _ TV too long, his parents _ _unhappy.4. 如果我们为他组织生日聚会，大家都会来的。Everyone _ if we _a birthday party _ him.5. 如果明天不下雨，我会和你一起去公园的。6. 如果她睡过头了，就会上学迟到的。She _ _ _ _ if she _ _7. 如果他没有空，他不会帮助你的。If he _ _, he _ _ you.8. 如果 Tom 考试不及格，他就没有机会上高中了。Tom _have the _to go to the high school if he _the exams.9

16、. 如果这个男孩打烂窗户，屋主会对他生气。If the boy_ _ _, the house owner _ _ _ _ _.10. 如果明天不下雨，我就出去野餐。_Answers1. was happened， came late?4 will come,hold, for7 isntfree,won t help2 work hard,will get5 doesn t rain,will,8 won tchance，withfailssuccess.3. watch,will be6 will be late for school,sleeps late9 breaks the win

17、dow , will be angry at him10. If it doesn t rain tomorrow, I will go out to have a picnic. 1.If you feel tired, you should have to have a rest.2. Where has he seen the film if he has time?3. If there are fewer trees, there will be more pollution.4. He will dress more casually if he doesn t work on w

18、eekends.5. If Marcia lives alone, she should keep) a pet parrot.6. Lana should buy a new dress if the old one is out of style. 7.The twins will fight if they argue.8. I will have a bake sale if I need money for education.9. Peter will send me a beautiful souvenir if he tours Spain.10. If Mr Green sa

19、ys I am hard- working, my parents will feel glad.11.I will go to the beach if it doesn t rain this week.12. Will they have a match if the P.E. teacher is busy?13.He will write a letter to his grandparents if he gets his report card this week.14. If she gets up late, she wontcatch the early bus.15. Peter will major in English if he passes the exams in Peking University.Translate1.如果他到得晚了会发生什么事情？2. 如果努力学习，你就会取得好成绩。3. 他如果看电视太久了，他的父母会不高兴。4. 如果我们为他组织生日聚会，大家都会来的。5. 如果明天不下雨，我会和你一起去公园的。6. 如果她睡过头了，就会