江苏省某市重点中学高二英语导学案:M6U4虚拟语气(牛津译林版)

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名称 江苏省某市重点中学高二英语导学案:M6U4虚拟语气(牛津译林版)
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更新时间 2012-08-27 20:59:46

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虚拟语气的 “四种形式”及“三点注意”
虚拟语气,作为日常交际应用中常常会出现的一种语言现象,一直是高考题几乎年年都要考到的一个热点。但对于中国学生来说,它又是一个难点。
If there were no subjunctive mood, English ______ much easier.
A. will be B. would have been C. could have been D. would be
一、掌握虚拟语气的四种主要形式
(1)条件从句+主句
(2)几个常用虚拟语气的句型
(3)wish, would rather, but for,otherwise,as if 及if only 的虚拟形式
(4)It is time that 的虚拟形式
二、注意虚拟语气的三种活用现象
(1)含蓄条件句 (2)时间错综句 (3)虚实错综句
(1)条件从句+主句
时间 谓语动词的虚拟形式
从句 主句
现在 动词过去式(be 多用were) would / should / could / might + 动词原形
过去 had + 过去分词 would / should / could / might + have + 过去分词
将来 动词过去式should + 动词原形were to + 动词原形 would / should / could / might + 动词原形
2) 虚拟条件句中有were, had, should时, 可把if省略,而把were, had, should放在主语前,用到装结构, 这种结构主要用于书面语中. 如:
Were it necessary, I might resign.
Had you informed me earlier, I would not have signed the contract.
Should it rain tomorrow, we would have to put off the visit to the Summer Palace
1.The rice ______ if you had been more careful.
A. would not be burning B. would not burn
C. would not have burnt D. would not burnt
2.If my lawyer ____ here last Saturday, he ______ me from going.
A. had been ; would have prevented B. had been ; would prevent
C. were ; would prevent D. were ; would have prevented
3.I didn’t see your sister at the meeting. If she ______ she would have met my brother.
A. has come B. did come C. came D. had come
4.______ for the free tickets, I would not have gone to the films so often.
A. If it is not B. Were it not C. Had it not been D. If they have not
5.You didn’t let me drive. If we ______ in turn, you ______ so tired.
A. drove ; didn’t get B. drove ; wouldn’t get
C. were driving ; wouldn’t get D. had driven ; wouldn’t have got
6.If she had worked harder, she ______.
A. would succeed B. had succeeded C. should succeed D. would have succeed
7. — If he ______, he ______ that food.
— Luckily he was sent to the hospital immediately.
A. was warned ; would not take B. had been warned ; would not have taken
C. would be warned ; had not taken D. would have been warned ; had not taken
8.If it ______ tomorrow, they would not go there by bike.
A. will rain B. rains C. would rain D. should rain
9.______ it rain tomorrow, we would have to put off the visit to the Yangpu Bridge.
A. Were B. Should C. Would D. Will
10.If I ______ you, I would not do it.
A. am B. were C. shall be D. being
(2)几个常用虚拟语气的句型
1. 动词 + 宾语从句
一个坚持:insist; 两个命令:order, command; 三个建议:suggest, propose, advise; 四个要求:desire, demand, ask, require
I propose that we (should) set a dead line for handing in the plans.
I suggest that we (should) set off at once.
I insisted that we (should) decide what to do with him.
虚拟语气形式:(should) + 动词原形
2. It is (was) + 上述动词的过去分词 + that 主语从句
It is demanded that he (should) leave at once.
It is requested that she (should) give a performance at the party.
3. It is (was) + important / necessary / better / strange / surprising / natural / possible / a pity / no wonder + that 主语从句
It is best that he (should) set off at once.
It is important that everybody (should) be told all the facts.
4. order 等 + be + 表语从句
My advice is that we (should) send for a doctor.
Our suggestion is that you (should) be first to go.
His only request is that you (should) give him more time.
5. order 等 + 同位语从句
Do you know the order that you (should) keep watch
上述结构中常用的名词有:suggestion, order, proposal, plan, idea, command, request等。(但定语从句除外。
The suggestion that our teacher gave us last night is that we shonld read more if we want to improve our English.
另外:suggest 做暗示、表明讲时,insist做坚持认为讲时用陈述语气。
The old man insisted that he was not old and should be back his position.
His expression suggested he had passed the driving test.
1.I insist that a doctor ______ immediately.
A. has been sent for B. sends for C. will be sent for D. be sent for
2.It is suggested that the job ______ done in another way.
A. was B. was to be C. be D. must be
3.He had an idea that we ______ by bike.
A. shall go B. go C. went D. would go
4.My suggestion is that the meeting ______ off till tomorrow.
A. to put B. be put C. should put D. be putting
5.The young man insisted that he _____ nothing wrong and _____ free.
A. did ; set B. had done ; should be set C. do ; be set D. does ; would be set
6.It is necessary that you ______ present at the discussion.
A. will be B. are C. should be D. would be
7.The boss gave orders that the work ______ at once.
A. will be started B. must be started C. be started D. should start
8.The guard there insisted that everybody ______ the rules.
A. obeys B. obey C. will obey D. would obey
wish, as if 以及 if only 的虚拟形式:
这几个词(词组)表虚拟时,其后所用的虚拟形式与条件从句基本相同,即此陈述语气中的时态后退一个时态。
随“时”变化的几种用法:
时间 谓语动词虚拟语气
wish / as if / as though / if only 现在 动词过去式(be 多用were)
过去 had + 过去分词
将来 would + 动词原形
时间 谓语动词虚拟语气
would rather 现在/将来 动词过去式(be 多用were)
过去 had + 过去分词
1.I wish I ______ you yesterday.
A. seen B. did see C. had seen D. were to see
2.When a pencil is partly in a glass of water, it looks as if it ______.
A. breaks B. has broken C. were broken D. had been broken
3.I’d rather that you ______ there yesterday and ______ again next weekend.
A. went ; should come B. should go ; had come
C. had gone ; came D. go ; come
4.The two strangers talked as if they ______ friends for years.
A. should be B. would be C. have been D. had been
5. — I blamed her yesterday.
— I would rather you ______ that.
A. didn’t do B. hadn’t done C. wouldn’t do D. shouldn’t do
6. — He is a very brave man.
— Yes. I wish I ______ his courage.
A. have B. had C. will have D. would have
It is time that 的虚拟形式
It is time that…
It is high time that…
It is about time that…
It is time 还可以有其他句型形式,需注意辨析:
It is time (for sb.) to do sth.
It is time for sth. / doing sth.
It is the first time that (从句用陈述语气的现在完成时)
1.It is high time you ______ the bus.
A. had caught B. caught C. will catch D. catch
2.It’s about time he ______ to do the work.
A. begins B. will begin C. begin D. began
3. It’s high time that we ___ to school.
A. would go B. went C. go D. will go
4.It is time we ___ up our results.
A. sum B. summed C. will sum D. would sum
(一)、含蓄条件句
含蓄条件句就是虚拟条件暗含在短语或上下文中,从句不表现出来。这时,必须根据句中表述的意义以及某些特定的信息词,并依据前文所列举的四种现象,来判断此时须采用的形式。
1.Without electricity, human life ______ quite different today.
A. is B. will be C. would have been D. would be
2.Yesterday Jane walked away from the discussion. Otherwise, she ___something she would regret later.
A. had said B. said C. might say D. might have said
(二)、时间错综句
从句与主句或上下文所表述的时间不一致。在这种情况下,我们切不可照搬某种形式,而应该按照句中所表述的时间关系,再选择相应的虚拟形式。例如:
If you had worked hard yesterday, you would be tired now.
1.If the flower had been watered, it ______ now.
A. wouldn’t die B. is dead C. had been dead D. will not die
2.If his television set had not been stolen yesterday, he ______ TV now.
A. would watch B. would have watched C. would be watching D. is watching
(三)、虚实错综句
所谓“虚实错综句”是指虚拟现象与客观事实错综交织在一起的句子。这就需要我们细心判断哪一处是虚拟语气,哪一处应使用陈述语气。
1.They ______ earlier, but the car wasn’t ready.
A. can have left B.may have left C. will have left D. might have left
2. — We could have walked to the station; it was so near.
— Yes. A taxi ______ at all necessary.
A. wasn’t B. hadn’t been C. wouldn’t be D. won’t be
五年高考
1. If only he ____quietly as the doctor instructed, he would not suffer so much now.
A. lies B. lay C. had lain D. should lie
2. How I wish every family ____a large house with a beautiful garden.
A. has B. had C. will have D. had had
3. You did not let me drive. If we ____in turn, you ____ so tired
A. drove; didn’t get B. drove; wouldn’t get
C. were driving; wouldn’t get D. had driven ; wouldn’t have got
4. _____it rain tomorrow, we would have to put off the visit to the Yangpu Bridge
A. Were B. Should C. Would D. Will
5. I suggested the person _____ to be put into prison
A. refers B. referring C. referred D. refer
6. When a pencil is partly in a glass of water, it looks as if it____
A. breaks B. has broken C. were broken D. had been broken
7. I insisted _____to see a doctor, but he insisted nothing ___ wrong with him
A. on him to go; should be B. he went; be C. he go; was D. he should to; is
8. ---Your aunt invites you to the movies today
---I had rather she ____ me tomorrow than today
A. tells B. told C. would tell D. had told
9. I was ill that day, otherwise I ____ the sports meet
A. would have taken part in B. took part in
C. had taken part in D. would take part in
10. ___the clouds, you would find the airplane in the sky easily
A. Had it not been for B. If it were not
C. If it had not been for D. Were it not for
11. If my lawyer ____here last Sunday, he ____ me from going
A. had been, would have prevented B. had been, would prevent
C. were, prevent D. were, would have prevented
12. ____hard, he would have passed the exam
A. If he were to work B. Had he worked
C. Should he work D. Were he to work
13. Had you listened to the doctor, you ____all right now
A. are B. were C. would be D. would have been
14. I did not see your sister at the meeting. If she ____, she would have met my brother
A. has come B. did come C. come D. had come
15. He ____busy yesterday, or he ___you with your experiment.
A. was, had helped B. was, would have helped
C. had been, would have helped D. were, would have helped
16. Without electricity, human life ____quite difficult today
A. is B. will be C. would have been D. would be
17. Mike’s father, as well as his mother, insisted he ____home
A. stayed B. could stay C. has stayed D. stay
18. It was requested that the play ____again
A. should put on B. would put on C. be put on D. put on
19. She insisted that a doctor _____ immediately
A. had sent for B. send C. be sent for D. was sent
20. If only I ___my car
A. hadn’t lost B. wouldn’t lose C. didn’t lose D. haven’t lost
21. But for water, it ____impossible to live in the earth
A. is B. would C. were D. wouldn’t be
22. I would rather you ____anything about it for the time being
A. do B. didn’t do C. don’t D. didn’t
23. The kind-hearted couple treat the orphan very well as though he ____ their own son
A. is B. were C. had been D. should be
24. How the old people wish that they ____young once more
A. were B. could become C. had been D. should be
25. It is high time that we ____ a meeting to discuss this problem
A. hold B. held C. have held D. had held
26. I wish that you ____ such a bad headache because I am sure that you would have enjoyed the concert
A. had not B. did not have had C. hadn’t had D. hadn’t have
27. The chairman insisted that we ____the question again
A. will discuss B. to discuss C. should discuss D. will be discussed
28. He requested that the students ____them get in crops
A. help B. to help C. helped D. helping
29. It is strange that he ____back so early
A. came B. will come C. had come D. should have come
30. My suggestion is that the meeting ____off till nest Sunday
A. be put B. put C. should put D. had been put
31. He is talking so much about America as if he ____ there
A. had been B. has been C. was D. been
32. I did not attend the lecture by Pro. Jackson. I ____ but I ____ all this morning
A. would, have washed B. could, have been washing
C. would have, have been washing D. could have, had washing
33. ----How could I thank you enough
----Don’t mention it. Any other man ____it
A. must do B. could do C. would have done D. should have done
34. If the hurricane had happened during the day-time, ____more deaths
A. it would have been B. it would be C. there would be D. there would have been
35. We took a taxi to the airport. Otherwise we ____late
A. would be B. were C. will be D. would have been
36. What do you think his proposal that we ____ a play at the English meeting
A. had put on B. should put on C. have put on D. will put on
37. I would rather you ____at once
A. leave B. will leave C. left D. should leave
38. It is necessary that he ____to the lab right now
A. come B. came C. would come D. is coming
39. In case I _____, I would try again
A. will fail B. would miss C. should fail D. shall fail
40. Without gravity, we ____ able to walk
A. were B. should be C. can be D. should not be
虚拟语气的 “四种形式”及“三点注意”
虚拟语气,作为日常交际应用中常常会出现的一种语言现象,一直是高考题几乎年年都要考到的一个热点。但对于中国学生来说,它又是一个难点。
If there were no subjunctive mood, English ______ much easier.
A. will be B. would have been C. could have been D. would be D
一、掌握虚拟语气的四种主要形式
(1)条件从句+主句
(2)几个常用虚拟语气的句型
(3)wish, would rather, but for,otherwise,as if 及if only 的虚拟形式
(4)It is time that 的虚拟形式
二、注意虚拟语气的三种活用现象
(1)含蓄条件句 (2)时间错综句 (3)虚实错综句
(1)条件从句+主句
时间 谓语动词的虚拟形式
从句 主句
现在 动词过去式(be 多用were) would / should / could / might + 动词原形
过去 had + 过去分词 would / should / could / might + have + 过去分词
将来 动词过去式should + 动词原形were to + 动词原形 would / should / could / might + 动词原形
2) 虚拟条件句中有were, had, should时, 可把if省略,而把were, had, should放在主语前,用到装结构, 这种结构主要用于书面语中. 如:
Were it necessary, I might resign.
Had you informed me earlier, I would not have signed the contract.
Should it rain tomorrow, we would have to put off the visit to the Summer Palace
1.The rice ______ if you had been more careful.
A. would not be burning B. would not burn
C. would not have burnt D. would not burnt
2.If my lawyer ____ here last Saturday, he ______ me from going.
A. had been ; would have prevented B. had been ; would prevent
C. were ; would prevent D. were ; would have prevented
3.I didn’t see your sister at the meeting. If she ______ she would have met my brother.
A. has come B. did come C. came D. had come
4.______ for the free tickets, I would not have gone to the films so often.
A. If it is not B. Were it not C. Had it not been D. If they have not
5.You didn’t let me drive. If we ______ in turn, you ______ so tired.
A. drove ; didn’t get B. drove ; wouldn’t get
C. were driving ; wouldn’t get D. had driven ; wouldn’t have got
6.If she had worked harder, she ______.
A. would succeed B. had succeeded C. should succeed D. would have succeed
7. — If he ______, he ______ that food.
— Luckily he was sent to the hospital immediately.
A. was warned ; would not take B. had been warned ; would not have taken
C. would be warned ; had not taken D. would have been warned ; had not taken
8.If it ______ tomorrow, they would not go there by bike.
A. will rain B. rains C. would rain D. should rain
9.______ it rain tomorrow, we would have to put off the visit to the Yangpu Bridge.
A. Were B. Should C. Would D. Will
10.If I ______ you, I would not do it.
A. am B. were C. shall be D. being
(CADCDDBDBB)
(2)几个常用虚拟语气的句型
1. 动词 + 宾语从句
一个坚持:insist; 两个命令:order, command; 三个建议:suggest, propose, advise; 四个要求:desire, demand, ask, require
I propose that we (should) set a dead line for handing in the plans.
I suggest that we (should) set off at once.
I insisted that we (should) decide what to do with him.
虚拟语气形式:(should) + 动词原形
2. It is (was) + 上述动词的过去分词 + that 主语从句
It is demanded that he (should) leave at once.
It is requested that she (should) give a performance at the party.
3. It is (was) + important / necessary / better / strange / surprising / natural / possible / a pity / no wonder + that 主语从句
It is best that he (should) set off at once.
It is important that everybody (should) be told all the facts.
4. order 等 + be + 表语从句
My advice is that we (should) send for a doctor.
Our suggestion is that you (should) be first to go.
His only request is that you (should) give him more time.
5. order 等 + 同位语从句
Do you know the order that you (should) keep watch
上述结构中常用的名词有:suggestion, order, proposal, plan, idea, command, request等。(但定语从句除外。
The suggestion that our teacher gave us last night is that we shonld read more if we want to improve our English.
另外:suggest 做暗示、表明讲时,insist做坚持认为讲时用陈述语气。
The old man insisted that he was not old and should be back his position.
His expression suggested he had passed the driving test.
1.I insist that a doctor ______ immediately.
A. has been sent for B. sends for C. will be sent for D. be sent for
2.It is suggested that the job ______ done in another way.
A. was B. was to be C. be D. must be
3.He had an idea that we ______ by bike.
A. shall go B. go C. went D. would go
4.My suggestion is that the meeting ______ off till tomorrow.
A. to put B. be put C. should put D. be putting
5.The young man insisted that he _____ nothing wrong and _____ free.
A. did ; set B. had done ; should be set C. do ; be set D. does ; would be set
6.It is necessary that you ______ present at the discussion.
A. will be B. are C. should be D. would be
7.The boss gave orders that the work ______ at once.
A. will be started B. must be started C. be started D. should start
8.The guard there insisted that everybody ______ the rules.
A. obeys B. obey C. will obey D. would obey
(DCBBBCCB)
wish, as if 以及if only 的虚拟形式:
这几个词(词组)表虚拟时,其后所用的虚拟形式与条件从句基本相同,即此陈述语气中的时态后退一个时态。
随“时”变化的几种用法:
时间 谓语动词虚拟语气
wish / as if / as though / if only 现在 动词过去式(be 多用were)
过去 had + 过去分词
将来 would + 动词原形
时间 谓语动词虚拟语气
would rather 现在/将来 动词过去式(be 多用were)
过去 had + 过去分词
1.I wish I ______ you yesterday.
A. seen B. did see C. had seen D. were to see
2.When a pencil is partly in a glass of water, it looks as if it ______.
A. breaks B. has broken
C. were broken D. had been broken
3.I’d rather that you ______ there yesterday and ______ again next weekend.
A. went ; should come B. should go ; had come
C. had gone ; came D. go ; come
4.The two strangers talked as if they ______ friends for years.
A. should be B. would be C. have been D. had been
5. — I blamed her yesterday.
— I would rather you ______ that.
A. didn’t do B. hadn’t done C. wouldn’t do D. shouldn’t do
6. — He is a very brave man.
— Yes. I wish I ______ his courage.
A. have B. had C. will have D. would have
(CCCDBB)
It is time that 的虚拟形式
It is time that…
It is high time that…
It is about time that…
It is time 还可以有其他句型形式,需注意辨析:
It is time (for sb.) to do sth.
It is time for sth. / doing sth.
It is the first time that (从句用陈述语气的现在完成时)
1.It is high time you ______ the bus.
A. had caught B. caught C. will catch D. catch
2.It’s about time he ______ to do the work.
A. begins B. will begin C. begin D. began
3. It’s high time that we ___ to school.
A. would go B. went C. go D. will go
4.It is time we ___ up our results.
A. sum B. summed C. will sum D. would sum
(BDBB)
(一)、含蓄条件句
含蓄条件句就是虚拟条件暗含在短语或上下文中,从句不表现出来。这时,必须根据句中表述的意义以及某些特定的信息词,并依据前文所列举的四种现象,来判断此时须采用的形式。
1.Without electricity, human life ______ quite different today.
A. is B. will be C. would have been D. would be
2.Yesterday Jane walked away from the discussion. Otherwise, she ______ something she would regret later.
A. had said B. said C. might say D. might have said
(DD)
(二)、时间错综句
从句与主句或上下文所表述的时间不一致。在这种情况下,我们切不可照搬某种形式,而应该按照句中所表述的时间关系,再选择相应的虚拟形式。例如:
If you had worked hard yesterday, you would be tired now.
1.If the flower had been watered, it ______ now.
A. wouldn’t die B. is dead C. had been dead D. will not die
2.If his television set had not been stolen yesterday, he ______ TV now.
A. would watch B. would have watched C. would be watching D. is watching
(AC)
(三)、虚实错综句
所谓“虚实错综句”是指虚拟现象与客观事实错综交织在一起的句子。这就需要我们细心判断哪一处是虚拟语气,哪一处应使用陈述语气。
1.They ______ earlier, but the car wasn’t ready.
A. can have left B.may have left C. will have left D. might have left
2. — We could have walked to the station; it was so near.
— Yes. A taxi ______ at all necessary.
A. wasn’t B. hadn’t been C. wouldn’t be D. won’t be
(DA)
五年高考
1. If only he ____quietly as the doctor instructed, he would not suffer so much now.
A. lies B. lay C. had lain D. should lie
2. How I wish every family ____a large house with a beautiful garden.
A. has B. had C. will have D. had had
3. You did not let me drive. If we ____in turn, you ____ so tired
A. drove; didn’t get B. drove; wouldn’t get
C. were driving; wouldn’t get D. had driven ; wouldn’t have got
4. _____it rain tomorrow, we would have to put off the visit to the Yangpu Bridge
A. Were B. Should C. Would D. Will
5. I suggested the person _____ to be put into prison
A. refers B. referring C. referred D. refer
6. When a pencil is partly in a glass of water, it looks as if it____
A. breaks B. has broken C. were broken D. had been broken
7. I insisted _____to see a doctor, but he insisted nothing ___ wrong with him
A. on him to go; should be B. he went; be C. he go; was D. he should to; is
8. ---Your aunt invites you to the movies today
---I had rather she ____ me tomorrow than today
A. tells B. told C. would tell D. had told
9. I was ill that day, otherwise I ____ the sports meet
A. would have taken part in B. took part in
C. had taken part in D. would take part in
10. ___the clouds, you would find the airplane in the sky easily
A. Had it not been for B. If it were not
C. If it had not been for D. Were it not for
11. If my lawyer ____here last Sunday, he ____ me from going
A. had been, would have prevented B. had been, would prevent
C. were, prevent D. were, would have prevented
12. ____hard, he would have passed the exam
A. If he were to work B. Had he worked
C. Should he work D. Were he to work
13. Had you listened to the doctor, you ____all right now
A. are B. were C. would be D. would have been
14. I did not see your sister at the meeting. If she ____, she would have met my brother
A. has come B. did come C. come D. had come
15. He ____busy yesterday, or he ___you with your experiment.
A. was, had helped B. was, would have helped
C. had been, would have helped D. were, would have helped
16. Without electricity, human life ____quite difficult today
A. is B. will be C. would have been D. would be
17. Mike’s father, as well as his mother, insisted he ____home
A. stayed B. could stay C. has stayed D. stay
18. It was requested that the play ____again
A. should put on B. would put on C. be put on D. put on
19. She insisted that a doctor _____ immediately
A. had sent for B. send C. be sent for D. was sent
20. If only I ___my car
A. hadn’t lost B. wouldn’t lose C. didn’t lose D. haven’t lost
21. But for water, it ____impossible to live in the earth
A. is B. would C. were D. wouldn’t be
22. I would rather you ____anything about it for the time being
A. do B. didn’t do C. don’t D. didn’t
23. The kind-hearted couple treat the orphan very well as though he ____ their own son
A. is B. were C. had been D. should be
24. How the old people wish that they ____young once more
A. were B. could become C. had been D. should be
25. It is high time that we ____ a meeting to discuss this problem
A. hold B. held C. have held D. had held
26. I wish that you ____ such a bad headache because I am sure that you would have enjoyed the concert
A. had not B. did not have had C. hadn’t had D. hadn’t have
27. The chairman insisted that we ____the question again
A. will discuss B. to discuss C. should discuss D. will be discussed
28. He requested that the students ____them get in crops
A. help B. to help C. helped D. helping
29. It is strange that he ____back so early
A. came B. will come C. had come D. should have come
30. My suggestion is that the meeting ____off till nest Sunday
A. be put B. put C. should put D. had been put
31. He is talking so much about America as if he ____ there
A. had been B. has been C. was D. been
32. I did not attend the lecture by Pro. Jackson. I ____ but I ____ all this morning
A. would, have washed B. could, have been washing
C. would have, have been washing D. could have, had washing
33. ----How could I thank you enough
----Don’t mention it. Any other man ____it
A. must do B. could do C. would have done D. should have done
34. If the hurricane had happened during the day-time, ____more deaths
A. it would have been B. it would be C. there would be D. there would have been
35. We took a taxi to the airport. Otherwise we ____late
A. would be B. were C. will be D. would have been
36. What do you think his proposal that we ____ a play at the English meeting
A. had put on B. should put on C. have put on D. will put on
37. I would rather you ____at once
A. leave B. will leave C. left D. should leave
38. It is necessary that he ____to the lab right now
A. come B. came C. would come D. is coming
39. In case I _____, I would try again
A. will fail B. would miss C. should fail D. shall fail
40. Without gravity, we ____ able to walk
A. were B. should be C. can be D. should not be
答案
1-5C B D B C 6-10 C C B AD 11-15A B CD B 16-20D D C C A
21-25C B B A B 26-30C C A D A 31-35AC CDD 36-40BCA C D