（精心整理）初中英語——條件狀語從句

1、初中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，如果”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)”的原則。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詞1.If conj . 如果，假如If you ask him，he will help you如果你請他幫忙，他會幫你的。 If you fail in the exam，you will let him d

2、own如果你考試不及格，你會讓他失望的。 2.unless conj.除非,若不,除非在的時候 （if .not.）You will fail to arrive there in time unless you start earlier.如果你不早點動身,你就不能及時趕到那兒。 Unless it rains, the game will be played.除非下雨,比賽將照常進行。3.so/as long as conj.只要 You may borrow my book as long as you keep it clean. 只要你保持書的清潔，你就可以把我的書借去。三關于條件句

3、的時態(tài)，常見的有以下三種情況： 1、條件狀語從句的主句是一般將來時，那么從句常常用一般現(xiàn)在時。When I grow up, Ill be a nurse and look after patients. 我長大后要當一名護士，照顧病人。 2、如果主句是祈使句，那么從句通常要用一般現(xiàn)在時。 If you want to have a chat ,call me up.如果你想聊天，打我電話。3、如果主句是含有情態(tài)動詞時，根據(jù)需要從句多用一般現(xiàn)在時。You should be quiet when you are in the reading room. 在閱覽室時應保持安靜。 四知識拓展1在以

4、when，before，as soon as等引導的時間狀語從句，也適用“主將從現(xiàn)”原則，即如果主句是一般將來時，從句則用一般現(xiàn)在時。I'll tell her the good news when she comes back.當她回來的時候，我將把這個好消息告訴她。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 progress.=If you work hard,you wil

5、l make great progress.如果你努力學習，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.如果你不快點，你就要遲到了。條件狀語從句的時態(tài)練習一、用所給詞的適當形式填空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) more pollution

6、.4. He _(dress)  more casually unless he _ 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).8. I _(have) a bake sale if I _(need) money for education.9. Peter _( s

7、end) me a beautiful souvenir 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 as he

8、 _(be ) free of task.14. Unless she _(get) up late, she _ (catch) the early bus.15. Peter _(major) in English if he _(pass) the exams in Peking  University.15.如果他到的晚了會發(fā)生什么事情？What _ if he _ late?16. 如果努力學習，你就會取得好成績。If you_ _, you _ good _.17. 他如果不看電視了，他的父母會很高興。Unless he _ TV too much, his parent

9、s _ _ very happy.18. 如果我們?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，否則我將和你一起去公園的。Unless it _  _ tomorrow, I _ go to the park _ you.20. 如果她睡過頭了，就會旅游遲到的。 She;_ the trip if she _.21. 只要他有空，他會幫助你的。As long as he _ _, he _ _ you.22. 如果Tom考試不及格，他就沒有機會上高中了。Tom _have

10、 the _to go to the _high school if he _ the exams.23. 你如果抄同學的作業(yè)就不能學好各門功課。You _ _ good at every subjects if you _ the other students homework. .二、單項選擇（15分）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

11、 work. A. since, has finished   B. after, finishes   C. when, will finish   D. before, finishes.3. What will fatherbring us,_he comes from China.A. if  B.when   C. as long as   D.untill 4.If wangfang _me,_me at once.A.need,tell B.needs,telling C

12、.need,telling D.needs,tell5 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. rain   C. wo

13、nt 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&

14、#160;  D. will go9. _I eat much food, Ill be very fat.A. Although   B. if    C. while  D. because10. Ill not give the book to him_ he will come here next Sunday.A. if    B. as long as    C. though    D. unless11. There _an English film

15、 in our school tomorrow.A. is going to have  B. will have   C. is going to be   D. has12. Could you tell us where _？A. will the next Olympic Games 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 reading  D