初中英語——條件狀語從句

1、學(xué)習(xí)必備歡迎下載中學(xué)英語 條件狀語從句一條件狀語從句的概念條件狀語從句，即在某種條件下，一件事情可能發(fā)生；在英語中由連接詞if 或 unless等引導(dǎo)的狀語從句叫做條件狀語從句；條件是指某一件事情實現(xiàn)之后（狀語從句中），一件事情（主句）才能發(fā)生，通常譯作“假如，只要，假如”等意思；條件狀語從句中，主從句的時態(tài)要遵循“主將從現(xiàn)”的原就；即，主句是將來時態(tài)時，從句用一般現(xiàn)在時代替將來時態(tài)；二.條件狀語從句的引導(dǎo)詞1. ifconj . 假如，假如if you ask him ， he will help you 假如你請他幫忙，他會幫你的；if you fail in the exam ， you

2、 will let him down 假如你考試不及格，你會讓他掃興的；2. unless conj. 除非 ,如不 ,除非在的時候（ if .not. ）you will fail to arrive there in time unless you start earlier.假如你不早點動身, 你就不能準時趕到那兒；unless it rains, the game will be played.除非下雨, 競賽將照常進行；3. so/as long as conj. 只要you may borrow my book as long as you keep it clean.只要你保持書

3、的清潔，你就可以把我的書借去；三關(guān)于條件句的時態(tài)，常見的有以下三種情形：1、條件狀語從句的主句是一般將來時，那么從句經(jīng)常用一般現(xiàn)在時；when i grow up, i ll be a nurse and look after patients.我長大后要當(dāng)一名護士，照料病人；2、假如主句是祈使句，那么從句通常要用一般現(xiàn)在時；if you want to have a chat ,call me up.假如你想談天，打我電話；3、假如主句是含有情態(tài)動詞時，依據(jù)需要從句多用一般現(xiàn)在時；學(xué)習(xí)必備歡迎下載you should be quiet when you are in the reading

4、room.在閱覽室時應(yīng)保持寂靜；四學(xué)問拓展1 在以 when， before， as soon as等引導(dǎo)的時間狀語從句，也適用“主將從現(xiàn) ”原就，即假如主句是一般將來時，從句就用一般現(xiàn)在時；i'll tell her the good news when she comes back.當(dāng)她回來的時候，我將把這個好消息告知她；she will give you a call as soon as she returns.她一回來就會給你電話；2.if 條件句的同義句：祈使句，and /or+ 將來時態(tài)的陳述句；work hard ,and you will make great pro

5、gress.=if you work hard,you will make great progress.假如你努力學(xué)習(xí)，你才會取得大的進步；hurry up, or you will be late.=if you dont hurry up.you will be late.假如你不快點，你就要遲到了；條件狀語從句的時態(tài)練習(xí)一、用所給詞的適當(dāng)形式填空1. when i feel tired, i have t a rest.2. where he see the film if he have time.3. unless there be many trees, there be mor

6、e pollution.4. he dressmore casually unlesshe work on weekends.5. if marcia live alone, she keep a pet parrot.6. lana buy a new dress as soon as the old one be out of style.7. the twins fight when they argue.學(xué)習(xí)必備歡迎下載8. i have a bake sale if i need money for education.9. peter send me a beautiful sou

7、venir as long as he tour spain.10. as long as 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 grandparentsas long ashe be free of task.14. unlessshe get up late, she cat

8、ch the early bus.15. peter major in english if he pass the exams in pekinguniversity.15.假如他到的晚了會發(fā)生什么事情？what if he late.16. 假如努力學(xué)習(xí)，你就會取得好成果；if you , you good .17. 他假如不看電視了，他的父母會很興奮；unlesshe tv too much, his parents very happy.18. 假如我們?yōu)樗M織生日聚會，大家都會來的；everyone if we a birthday party him.19. 除非明天下雨，否就我將

9、和你一起去公園的；unless it tomorrow, i go to the park you.20. 假如她睡過頭了，就會旅行遲到的；she; the trip if she .21. 只要他有空，他會幫忙你的；as long as he , he you.22. 假如 tom 考試不及格，他就沒有機會上高中了；tom have the to go to the high school if he the exams.23. 你假如抄同學(xué)的作業(yè)就不能學(xué)好各門功課；you good at every subjects if you the other students homework.二

10、、單項挑選（15 分）1. if you to the party, youa grealtl htimavee. a. will gob. wentc. god. going2. it will be a long time peter his work.a. since, has finishedb. after, finishesc. when, will finishd. before, finishes.3. what will fatherbring us, he comes from china.a. ifb.whenc. as long asd.untill學(xué)習(xí)必備歡迎下載4.

11、 if wangfang me, me at once.a. need,tell b.needs,telling c.need,telling d.needs,tell 5 i her the answer if she me.a. can tell, will askb. will tell, will askc. would tell, askd. will tell, asks6. what are you going to do tomorrow.-we ll go to the library tomorrow if it .a. isn t raibn. rainc. won t

12、raind. doesn t rain 7. do you know when he will come back tomorrow.-sorry, i don t know. when he backe, lil you.a. comesb. will comec. comed. may come ll t8. what will you do if you to the old folk s home visit.a. gob. wentc.goingd. will go9. i eat much food , i ll be very fat.a. althoughb. ifc. whi

13、led. because10. i ll not give the book to him he will comehere next sunday.a. ifb. as long asc. thoughd. unless11. there an english film in our school tomorrow.a. is going to haveb. will havec. is going 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 bo