1、if 引導的條件狀語從句引導條件狀語從句 最常用的連詞是 if ，常見的 if 條件狀語從句表示 在 某條件下某事很可能發生 。如：If you ask me ,I will answer youIf it rains tomorrow, I will stay at home.I will stay at home if it rains tomorrow.另外， if 從句還表示 不可實現的條件 或根本不可能存在的條件 ，也就 是一種虛擬的條件或 假設。從句多用 一般過去時或過去完成 時，表示 對現在或過去的一種假設。如：If I were in university ， I would

2、If I had enough money ,I would buy a car.1.if 從句用一般現在時，主句用一般將來時If he runs , he ll get there in time2.if 從句用一般現在時，主句用 may/might/can/mustIf the fog gets thicker the plane may/might be diverted.3.if 從句用一般現在時，主句用一般現在時If you heat ice it turns to water. （也可用 will turn）4. if 從句用現在進行時，主句用一般將來時If you are loo

3、king for Peter you ll find him upstairs.5.if 從句用現在完成時，主句用一般將來時If you have finished dinner Ill ask the waiter for the bill.一、用所給詞的適當形式填空1.If you (feel) tired, you (have) to have arest.3. If there (be) fewer trees, there ( be)more pollution.5.IfMarcia (live)alone,she( keep) a pet parrot.6.Lana _( buy)

4、 a new dressif the oldone_(be) out of style.9.Peter _( send) me abeautifulsouvenir ifhe(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.13. He (write) a letter to his grandparents if he (get) his reportcard this week.14.

5、If she (get) up late, she ( not catch)the early bus.15. Peter (major) in English if he (pass) the exams inPeking University.16. 如果努力學習，你就會取得好成績If you , you good .17. 他如果看電視太久了，他的父母會不高興。If he TV too much, his parents unhappy.18. 如果我們為他組織生日聚會，大家都會來的。Everyone if we a birthday party him.19. 如果明天不下雨，我會和你

6、一起去公園的。If it tomorrow, I go to thepark you.21. 如果他有空，他會幫助你的。If he , he y ou.23. 你如果抄同學的作業就不能學好各門功課。You good at all the subjects if you the otherstudents homework.單項選擇1.If you to the party, you lhl ave a great time. A. will go B.went C. go D. going2. It will be a long time Peter his work.A. since, ha

7、s finished B. after, finishes C. when, will finish D.before, finishes.3. What will father us from Japan? A. take B. bringcarry D. make4. 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. tell, asks6. Wha

8、t are you going to do tomorrow?-We ll go to the library tomorrow if it _.A. isn t raBin. rain C. won ati nr D. doesn t rain7. Do you know when he will come back tomorrow?-Sorry, I don t know. When he back, I ll tell you.A. comes B. will come C. come D. may come8. What will you do if you to the old f

9、olk sA. go B. went C.going D. will go9. If I eat food, I ll be very fat.A. too many B. many too C. too much D. much too10. I ll 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 have B. will have C.

10、 is going to be D. has12. Could you tell us where ？C.willhome visit?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 book.A. read B. am reading C. was reading D. am going to read14. What you when it began to rain