真实条件句和虚拟条件句
真实条件句和虚拟条件句（Units 9, 10）（重难点）
真实条件句表示现在或将来可能发生的事情或存在的情况，虚拟条件句表示纯属假设的不可能发生的事情或存在的情况，它是与事实相反的愿望、假想。本学期要求掌握与现在事实相反的虚拟条件句。
真实条件句的构成：“If + 从句主语 + 一般现在时，主句主语 + will/won’t + 动词原形”
If we bid for the games, we will promote the country.
虚拟条件句的构成：“If + 从句主语 + 动词过去式， 主句主语+ would (’d ) + 动词原形” If I had the time, I’d make something better. 注意：在这种与现在事实相反的虚拟条件句的if 从句中，不论从句主语是什么人称，be动词都常用were。 If my grandmother were alive, I’d ask her. If I were you, I’d ask her.
练习：
(样题) 18. If the Olympics ___ here, the city ___ greatly improved.
A. come… will be B. come… will C. will come… will be D. will come… is
(样题) 22. If my grandmother ___ alive, I ___ her.
A. is… would ask B. were…would ask C. was… will ask D. were… will ask
(04年7月题) 21. If I ___ time, I ___ something better.
A. have… will make B. will have… will make
C. had… would make D. had had… would make
(05年1月题) 18. If I ___ you, I ___ study English harder.
A. am…would B. were…would C. am…will D. had been…would (05年1月题) 19. If I ___ time last Sunday, I would have gone to visit you.
A. had had B. had C. have had D. would have
(05年7月题) 22. If there ___ no air, there ___ no living thing.
A. were…would be B. was…will be C. is…is D. is…should be (05年7月题) 23. If you had warned Jane, she ___ on time, but she was late.
A. will come B. would come C. had come D. would have come (Unit 18题) 2. If I get the new job, I ___ buy a better car.
A. / B. will C. would
(Unit 12题) 13. If he were fitter, he ___ live longer.
A. / B. will C. would
（以下是补充选择填空练习题）
75. I’ll buy a pair of shoes if the store ___ soon.
a. open b. opened c. opens d. has opened
107. If I ___ you, I would do it at once.
a. am b. would be c. be d. were
108. ___, I would go with him.
a. If he wants b. If he wanted c. Wanted he d. Were he want