if引导条件状语从句时，在条件状语从句中要用一般时表示将来时，而主句可以是三种情况.
1. 主句可以是一般将来时.如：If he comes, I will let him go into your office.
2. 主句也可以是情态动词+动词原形.如：If he comes, you can tell him this.
3. 主句也可以是祈使句.如：If he comes, let him go into my office.
宾语从句时态练习题
1. Catheri ne said that she __ to Guan gzhou.
A. has n ever gone
B. had n ever gone
C. has n ever bee n
D. had n ever bee n
2. The stude nts want to know whether they _ discussio 讨论）today.
A. had
B. has
C. will have
D. are
3. She asked Linda if __ go and get some books.
A. could she
B. she could
C. she can
D. she may
4. Can you tell me __ you were bor n, Betty?
A. who
B. what
C. whe n
D. that
5. I don't know __ they have passed the exam.
A. what
B. if
C. whe n
D. where
6. She did n't know _ back soon.
A. whether he would be
B. if would he be
C. he will be
7. She asked me if I knew _____ .
A. whose pen is it
B. whose pen it was
C. whose pen it is
D. whose pen was it
8. Did you know __ ?
A. who he was looki ng after
B. who was he look ing for
C. who he is look ing for
D. who he is look ing after
9. Could you tell me _ ? A. when will they leave Beijing B. when would they leave Beijing
C. when they will leave Beijing
D. when did they leave Beijing
10. Could you tell me if it ____ tomorrow?
A. rains
B. is rai ning
C. will rain
D. rain
11. The teacher told his stude nts the sun ____ i n the east.
A. rise
B. rises
C. rose
D. rise n
12. Could you tell me _____ ?
A. where is the n earest railway stati on
was
C. where the nearest railway station is
statio n
13. Can you tell me ________
A. where does Tom live?????????
B. where Tom lived
C. Tom lives where????????????????????
D. where Tom lives
14. Let me tell you _____ .
A. how much is the car
B. how much does the car cost
C. how much did I pay for the car
D. how much I spe nt on the car 15. Have you decided ______ for Australia?
B. where the n earest railway stati on
D. where was the n earest railway
A. whe n will you leave
B. whe n do you leave
C. you will leave whe n
D. whe n you will leave
16. She asked me ________ .
A. who he was
B. who was he
C. who is he
D. who he is
17.1 don ' t know _________ .
A. what time the movie starts
B. what time starts the movie
C. the time to start the movie
D. the movie what time starts
18. The doctor asked me how long _______ .
A. was I ill
B. have I been ill
C. I have been ill
D. I had been ill
19. The weather forecast 天气预报）doesn' t say ________ .
A. if it rai ns tomorrow
B. if does it rai n tomorrow
C. if it will rain tomorrow
D. if will it rain tomorrow
20. They want to know ________ ?
A. where is the hospital
B. how old are you
C. when the train will leave
D. why is the boy crying
21. Tony wan ted to know ________ .
A. what had Father Christmas put in his stock ing
B. whe n Father Christmas had put in his stock ing
C. what Father Christmas had put in his stock ing
D. where Father Christmas had put in his stock ing