2022年if+引导的条件状语从句

1、学习必备欢迎下载一引导条件状语从句最常用的连词是if，常见的 if 条件状语从句表示在某条件下，某事很可能发生， 条件是可能存在的， 主句中某种情况发生的概率也是很高的。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 him down 如果你考试不及格，你会让他失望的。if you have finished the homework, you can go home 如果你作业做完了就可以回家了。二if 从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或

2、假设。 从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。如：if i were you，i would invite him to the party如果我是你，我会邀请他参加聚会。i would have arrived much earlier if i had not been caught in the traffic 要不是交通堵塞，我本会来得早一些。另外你还要注意 if 条件句的时态搭配1if 从句用一般现在时，主句用一般将来时if he runs hell get there in time. 如果他用跑的，他就会及时赶到那儿。the cat will scratch

3、 you if you pull her tail. 如果你拉猫的尾巴，它就会抓你。2if 从句用一般现在时，主句用may/might/can if the fog gets thicker the plane may/might be diverted. 如果雾在大一些，飞机可能就会改在别的机场降落。if it stops snowing we can go out. 如果雪停了，我们就可以出去。3if 从句用一般现在时，主句用must/should if you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃

4、面包。4if 从句用一般现在时，主句用一般现在时if you heat ice it turns to water. ( 也可用 will turn) 如果把冰加热，它就会化成水。5if 从句用现在进行时，主句用一般将来时if you are looking for peter youll find him upstairs. 如果你是在找彼得，上楼就会找到他。6if 从句用现在完成时，主句用一般将来时if you have finished dinner ill ask the waiter for the bill. 如果你吃完了，我就叫服务生来算账注意 ： 学习 if 引导的条件状语从句

5、的用法,现在总结一下 : if 条件句不一般，几个要点记心间；条件句，放在前，逗号要放句中间。条件句表可能，主句多用将来时；精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 1 页，共 5 页 - - - - - - - - -精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 1 页，共 5 页 - - - - - - - - -学习必备欢迎下载条件句表事实，主句常用现在时。在 if 引导的条件状语从句中，如果从句谈论的是一个有可能发生的事实及其产生的相关的结果，主句用一般将来时态，从句用一般现在时态。如：we

6、 will walk there if we cant find a bus. if it rains tomorrow, we will not go to the zoo. what will you do if you find a panda in danger. 如果 if 条件句谈论的是重复发生和预示要发生的情景和事件，则主从句大多用一般现在时态。如：if bears are in danger, they attack people. if 条件状语从句的时态练习一在正确的答案下划一条线。1. daina ( will go/go/goes) to europe if she (

7、will pass/pass/passes) the exams . 2. the graduates (will teach/teach/teaches) 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 (wont/don t/doesn t/ isnt) rainy,

8、we (will take/ take/takes) walk outside. 5. if a ufo (will land/land/lands) in front of me, i (will go/go/goes) in to look for the alien. 6. if he (will have/have/has) money, he (will build/build/builds) a science lab. 7. dont wait for me if i (am/ will be) late. 8. they (won t/don t) go to the beac

9、h if it (will rain/rain /rains). 9. i (will call/ call) you if he (will stay/stay /stays) 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/ don t/ doesnt) get tired? 12. where (will/ do/does) they live if t

10、hey (will miss/ miss/ misses) the bus? 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 _(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) al

11、one, 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 _(have) a bake sale if i _(need) money for education. 9. peter _( send) me a beautiful souvenir if he _ (tour) spain. 10. if mr green _(say) i am hard- working,

12、my parents _( feel) glad. 11.i _(go) to the beach if it_ ( not rain) this week. 精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 2 页，共 5 页 - - - - - - - - -精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 2 页，共 5 页 - - - - - - - - -学习必备欢迎下载12. _they _( have) a match if the p.e. teacher _(be) busy? 13.he _

13、(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. 15.如果他到的晚了会发生什么事情？what _ if he _ late? 16. 如果努力学习，你就会取得好成绩。if you_ _, you _ good _. 17

14、. 他如果看电视太久了，他的父母会不高兴。if he _ tv too much, his parents _ _ unhappy. 18. 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. 19. 如果明天不下雨，我会和你一起去公园的。if it _ _ tomorrow, i _ go to the park _ you. 20. 如果她睡过头了，就会旅游迟到的。she _ the trip if she _. 21. 如果他有空，他会帮助你的。if he _, he _ you. 22. 如果 tom考试不及格，

15、他就没有机会上高中了。tom _have the _to go to the _high school if he _ the exams. 23. 你如果抄同学的作业就不能学好各门功课。you _ _ good at all the subjects if you _ the other students homework. 三、单项选择（ 15 分）1. if you _ to the party, youll have a great time. a. will go b. went c. go d. going 2. it will be a long time _ peter _ h

16、is work. a. since, has finished b. after, finishes c. when, will finish d. before, finishes. 3. what will father _ us from japan? a. take b. bring c. carry d. make 4. weifang is famous _ kites. a. for b. to c. on d. with 5 i _ her the answer if she _me. a. can tell, will ask b. will tell, will ask c

17、. would tell, ask d. will tell, asks 6. what are you going to do tomorrow? -we ll go to the library tomorrow if it _. a. isnt rain b. rain c. wont rain d. doesnt rain 精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 3 页，共 5 页 - - - - - - - - -精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 3 页，共 5 页 - -

18、- - - - - - -学习必备欢迎下载7.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. come d. may come 8. what will you do if you _ to the old folks home visit? a. go b. went c. going d. will go 9. if i eat _ food, ill be very fat. a. too many

19、 b. many too c. too much d. much too 10. ill give the book to him if he _ here next sunday.a. will come b. comes c. is coming d. came 11. there _an english film in our school tomorrow. a. is going to have b. will have c. is going to be d. has 12. could you tell us where _ ？a. will the next olympic g

20、ames held b. the next olympic games will be held c. would the next olympic games be held d. the next olympic games would be held 13. when my mother returned last night, i _ a book. a. read b. am reading c. was reading d. am going to read 14.what _ you _ when it began to rain? a. do, do b. were, doin

21、g c. are, doing d. did, do 15. ill wake you up when he _back. a. will b. is going to come c. comes d. come 1-5 cdbad 6-10 daacb 11-15 cbcbc 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.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） 。此时，表达的是和现实相反的推测，用虚拟语气。if i were you, i wouldnt do it like that.如果我是你，我就不会那么做的。if you gave me some money, i would be very happy. 如果你给我一些钱，我