专题03 条件状语从句-备战2022年高考英语状语从句精讲及练习.docx

1、专题3 条件状语从句【例句及用法】条件状语从句是由引导词if以及unless等词引导的状语从句。1. If you ask him, he will help you. 如果你请他帮忙，他会帮你的。2. You will fail to arrive there in time unless you start earlier.如果你不早点动身，你就不能及时赶到那儿。3. Unless it rains, the game will be played.除非下雨，否则比赛将照常进行。【考点1】主将从现1. If the rain stops, shall go out for a walk.如

2、果雨停了，我就出去散步。2. If he comes, he will tell me all.如果他来了，他会告诉我所有的事情。【考点2】if从句中的省略1. Come tomorrow if (it is) possible. 可能的话，明天来。2. I will buy a DVD set if (it is) necessary.如果有必要，我会买一套 DVD。【考点3】If so 和 If not 1. Do you have a knack for coming up with ideas? If so, we would love to hear from you.你有什么能想出

3、好点子的诀窍吗？如果有，我们很愿意收到你的来信。（这句中的so是对前文中提到的事情的肯定假设。）2. It must be great that they arrive before I leave. If not, the responsibility will be mine.如果他们在我离开之前到达，那自然很好。但如果不是的话，那责任就是我的了。（这句中的not指代对前文中提到的事情的否定假设。）【考点4】句型转换祈使句+and/or+句子（一般将来时结构）If you work hard, youll success.如果你努力学习，你将会成功。=Work hard, and youl

4、l succeed.努力学习，那么你将会成功。If you dont work hard, youll not succeed. 如果你不努力学习，你将不会成功。=Work hard or you wont succeed.努力学习，否则你不会成功。借助without/with来转换条件状语从句。1.If there is no water, fish will die.如果没有水，那么鱼就会死。=Fish will die without water.没有水，鱼将会死掉。2. If we had not had your help, we would not have finished in

5、 time.如果没有你的帮忙，我们肯定不能及时完成任务。Without your help, we would not have finished in time.没有你的帮忙，我们肯定不能及时完成任务。【考点5】on condition that条件是I can tell you the truth on condition that you promise to keep a secret.我可以告诉你真相，条件是你答应保密。【考点6】Supposing和suppose倘若Supposing it rains, shall we continue the sports meeting?倘若

6、下雨，我们的运动会还要继续举行吗?【考点7】provided如果He will sign the contract provided we offer more favorable terms.如果我们提出更优惠的条件，他就会在合同上签字。【考点8】but for若非，要不是But for the rain, we should have a pleasant journey.要不是下雨，我们的旅行肯定会很愉快。【考点9】if引导的非真实条件句中的省略if引导的非真实条件句中，如果从句中有were、had、should这三个单词，可以按照以下格式将if省略，如有not依旧放在原处：1. Wer

7、e+S+. Weretheyherenow, theycouldhelpus. =Iftheywereherenow, theycouldhelpus.如果他们现在在这里，他们可以帮助我们。2. Had+S+done+. Hadyoucomeearlier, youwouldhavemethim. =Ifyouhadcomeearlier, youwouldhavemethim. 如果你早点来，你会遇见他。3. Should+S+do+.Shoulditrain, thecropswouldbesaved. =Ifitshouldrain, thecropswouldbesaved.如果下雨，

8、作物将得救。【考点9】once引导条件状语从句He will not be swerved from his course once his mind is made up.一旦他已下定决心，就无法改变。【考点10】unless引导条件状语从句Ill go to school unless it snows heavily=Ill go to school if it doesnt snow heavily.如果不下大雪，我就去学校。（unless=ifnot）【考点11】in case引导条件状语从句In case you need something, please dont hesita

9、te to let me know.如果你需要什么东西，请不客气地对我说。【对点练习】一、单项选择1. If you _ to the party, youll have a great time. A. will go B. went C. go D. going2. It will be a long time _ Peter _ his work. A. since, has finished B. after, finishes C. when, will finish D. before, finishes3. What will father _ us from Japan? A.

10、 take B. bring C. carry D. make 4. Weifang is famous _ kites A. for B. to C. on D. with5 I _ 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 library tomorrow if it _. A. isnt rain B. ra

11、in C. wont rain D. doesnt rain7.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 go9. If I eat _ food, Ill be very fat.A. to

12、o many B. many too C. too much D. much too10. Ill give the book to him if he _ here next Sunday.A. will come B. comes C. is coming D. came11. There _an English film in our school tomorrow.A. is going to haveB. will have C. is going to be D. has12. Could you tell us where _?A. will the next Olympic G

13、ames held B. the next Olympic Games will be heldC. would the next Olympic Games be held D. the next Olympic Games would be held13. When my mother returned last night, I _a book. A. read B. am reading C. was readingD. am going to read14. What _ you _ when it began to rain?A. do, do B. were, doing C.

14、are, doing D. did, do15. Ill wake you up when he _back.A. will B. is going to come C. comes D. come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 cas

15、ually 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 _ (have) a bake sale if I _ (need) money for education.9. Peter _ (send) me a beautiful souvenir if

16、he _ (tour) 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?13. He _ (write) a letter to his grandparents if he _ (get) his report card this week.14. If she _

17、(get) up late, she _ (not catch) the early bus.15. Peter _ (major) in English if he _ (pass) the exams in PekingUniversity. 【参考答案】一、1-5 CDBAD 6-10 DAACB 11-15 CBCBC二、1. If you feel tired, you will have to have a rest.2. Where will he see the film if he has time?3. If there are fewer trees, there wil

18、l be more pollution.4. He will dress more casually if he doesnt work on weekends.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. Pete

19、r will send me a beautiful souvenir if he tours Spain.10. If Mr Green says I am hard-working, my parents will feel glad.11. I will go to the beach if it doesnt 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 wont catch the early bus.15. Peter will major in English if he passes the exams in Peking University.