if条件状语从句讲解与练习.docx

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1、if引导的条件状语从句if条件句：条件句用于陈述语气，表示假设的情况可能发生，其中if是如果的意思。用法例句主句为一般将来时态，if从句用一般现在 时态（即主将从现）。We will stay at home if it rains tomorrow.如果明天下 雨，我将要呆在家。主句中含有情态动词，if从句用一般现在 时态。If you finish your homework, you can go home now. 如 果你做完了作业，你现在可以回家了。 主句为祈使句，if从句用一般现在时态。Dont jump into the river if you feel very hot.

2、如果你感 到很热，不要跳入河里。主句为过去将来时，if从句用一般过去时 态（如果涉及到be动词，一律都用were） o 此时，表达的是和现实相反的推测，用虚拟If 1 were you, 1 wouldnt do it like that.如果我是你，我就 不会那么做的。If you gave me some money, 1 would be very happy. 如 果你给我一些钱，我就会很高兴的。构成条件从句主 句时态lf+一般现在时主语+ shall/will+动词原形例句If he comes,he will take us to the zoo.1）用法：（1）条件状语从句通常由

3、连词if引导，意为“如果、假如、主句不能用be going to表示将来, 而应该用shall, willoIf you leave now, you are never going to regret it.(错误)If you leave now, you will never regret it.(正确)（2）if“如果”，引导条件状语从句，主句用一般将来时，从句则用一般现在时，如:If it rains tomorrow, I shant climb the hills.另外，主句是祈使句或含有情态动词，从句也用一般现在时。如:Please call me if he comes ne

4、xt Sunday.Can you call the policeman if you are in the trouble.注意 宾语从句中的if与条件状语从句if的区别。宾语从句中的iF是否湘当于whether, 引导宾语从句，时态需根据语境确定。如果主句用一般现在时，从句可以根据具体情况选用时态, 如果主句用一般过去时，从句必须用过去式的某种形式。I dont know if it will rain tomorrow.我不知道明天是否会下雨。Our teacher said there was going to be a football match the next month.我们

5、说下月将有场足球 比赛。【边学边做】用括号内所给词的正确形式填空。1. What will you buy if you (have) a lot of money?2. If it (not snow) tomorrow, we will feel unhappy.3. You mustn,t go to school if you (be) still in bed.4. If he (be) at home at that time, he would know it.5. Please show me the way if you (know) it.6. You will hurt

6、your teeth if you (eat) too much candy.7. If you gave me a toy car, I (be) very happy.1.1 would get the prize if I (work) hard.9. If she(finish ) work early ,she(go) home.10. If the weather (be) fine, we(go)for a walk .11. If I(have) time tonight J(finish) the book Im reading.12. If it(rain) next we

7、ekend , we(not be able to ) plant the vegetable .13. If it(rain),we(stay) at home .14.If she(arrive) ,she(phone) me .15. If he(call),tell him Ill ring back .if条件状语从句的时态练习一.在正确的答案下划一条线。l.Daina ( will go/go/goes) to Europe if she (will pass/pass/passes) the exams .2. The graduates (will teach/teach/te

8、aches) in the poor village if the Ministry of Education (will agree/ agree/agrees) soon.3. If there (will be/ are/is) a car accident, they (will call/call/calls) 110 for help at once.4. If it (wonldon9t/doesnl isnt) rainy, we (will take/ take/takes) walk outside.5. If a UFO (will land/land/lands) in

9、 front of me, I (will go/go/goes) in to look for the alien.6. If he (will have/have/has) money, he (will bulid/build/builds) a science lab.7. Dont wait for me if I (am/ will be) late.8. They (wont/dont) go to the beach if it (will rain/rain /rains).9.1 (will call/ call) you if he (will stay/stay /st

10、ays) at home.10. Mr Smith (will let/ let/lets) you know if he (will need/ need/ needs) help.11. (Will / Do/ Does) he visit the museum if he (wont / dont/ doesnt) get tired?12. Where (will/ do/does) they live if they (will miss/ miss/ misses) the bus?二、用所给词的适当形式填空l.If you(feel) tired, you(have) to ha

11、ve a rest.2. Where he(see) the film if he(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(

12、argue).1 .1(have) a bake sale if I(need) money for education.9 . Peter( send) me a beautiful souvenir己念品)if he(tour) Spain.10 . If Mr Green(say) I am hard- working, my parents( feel) glad.11 .1(go) to the beach if it( not rain) this week.12 .they( have) a match if the P.E. teacher(be) busy?13 .He(wr

13、ite) 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.巩固练习一、适当形式填空1. Til buy a computer if I(have) enough money.2.If I(walk), it(take) me too long.3. If he(be) free, he will go with you.4. Pm sure if he(go) to the party, he(hav

14、e) a great time.5. You(not get) nervous if you(do ) enough exercise.6. She will go home if she(finish ) work early.7. If it(rain), we(stay) at home.8.1f it(not rain) tomorrow, we(have) a sports meeting.(运动会)9.What(happen) if they(join) the party today?lO.If you(do), you(be) sorry.11. If he(do), he(b

15、e) sorry.12.If they the party today, half of the class(not come).二、单项选择l.If you to the party, youll have a great time. A. will go B. went C. go D. going2. Will you go to the park if it fine?A. will be B. was C. is D /3. If you _to school late, your teacher angry with you.A. come; are B. come, will b

16、e C. will come; are D. will come; will be4. If it rains tomorrow, we visit the museum.A. dont do B .wont go C .arent go D. didnt go.5.1 her the answer if she me.A. can tell, will ask B. will tell, will ask C. would tell, ask D. will tell, asks6. - What are you going to do tomorrow? -Well go to the l

17、ibrary tomorrow if it.A. isnt rain B. rainC. wont rainD. doesnt rain7. 一Do you know when he will come back tomorrow?Sorry, I dont know. When he back, Ill tell you.A. comes B. will come C. comeD. may come8. What will you do if you to the old folks home visit?A. go B. went C.going D. will go9. If I ea

18、t food, Til be very fat.A. too many B. many too C. too much D. much too10. Til give the book to him if he here next Sunday.A. will come B. comesC. is comingD. came11. There an English film in our school tomorrow.A. is going to have B. will have C. is going to be D. has13. When my mother returned las

19、t night, I a book.A. readB. am reading C. was readingD. am going to read14. What you when it began to rain?A. do, do B, were, doing C. are, doing D. did, do15. Til wake you up when he back.A. will B. is going to come C. comes D. come16.1 f she goes to a different school, I my best friend.A. will see

20、 B. wont see C. see D. saw17.1 f it rains tomorrow, we visit the museum.A. dont doB .wont go C .arent goD. didnt go.翻译1 .他如果看电视太久了，他的父母会不高兴。If heTV too much, his parents unhappy.2 .如果我们为他组织生日聚会，大家都会来的。Everyoneif wea birthday party him.3 .如果明天不下雨，我会和你一起去公园的。If ittomorrow, I go to the park you.4 .如果他有

21、空，他会帮助你的。If he, he you.按要求完成下列句子5 .Santa Claus will come in n few days.否定句般疑问句及否定回答就划线部分提问2 .Mr. Smith is going to plant Sowers in two weeks.否定句般疑问句及否定回答就划线部分提问3 .My father went to Hong Kong by plane last week.否定句般疑问句及否定回答就划线部分提问4 .He goes to Beijing for work once a week .否定句般疑问句及否定回答就划线部分提问5 .The boy is playing basketball with his classmates now.否定句般疑问句及否定回答就划线部分提问6 . My brother was taking on the phonn at nine yesterday.否定句般疑问句及否定回答就划线部分提问