一、选择题
1．The movie couldn’t be more boring.I wish I ________ to it. A．had not been B．have not been C．did not go D．have not gone 答案 A
解析 句意为：这部电影无聊透了。我希望我没有去看它。wish后的宾语从句表示对过去事情的虚拟，故谓语动词用过去完成时，选A。
2．—What does the sign over there read?
—“No person ________ smoke or carry a lighted cigarette or pipe in this restaurant.”
A．will B．shall C．need D．must 答案 B
3．—Can I go now，sir?
—If you ________ leave，do it quietly. A．should B．must C．shall D．may 答案 B
解析 句意为：——我现在可以走吗，先生？——如果你非要离开，悄悄地走。must偏要，非得。
4．If I ________ time，I would certainly go to the movies with you，but I have a lot of work to do.
A．had
B．have
C．will have D．had had 答案 A
解析 句意为：如果我有时间的话，我肯定会和你一起去看电影，但是我有很多工作要
做。对现在情况的虚拟，条件句谓语动词需用动词的过去式，故选A。
5．________ the rain stop，the crops would be saved. A．Will B．Would C．Should D．Had 答案 C
解析 句意为：如果雨停了的话，庄稼将会得救。表示对将来情况的假设，可用“should＋动词原形”。从句为省略if将should提前构成的倒装。
6．—I’m afraid there’s no good news for you，Tom.Shall I tell your parents or shall I just let them know nothing about the result of this exam?
—I’d rather they ________ know，sir. A．don’t B．won’t C．didn’t 答案 C
D．not
7．I’m sorry.________ for my illness，I would have come and lent you a helping hand.
A．Were it not
B．If it were not
D．If it has not been
C．Had it not been 答案 C
解析 句意为：我很抱歉。要不是我病了，我会来帮你一把的。从句为省略if的部分倒装结构，由主句中的would have come以及句意可知，这里是对过去情况的假设，故选C。
8．The new supermarket has announced that the first to purchase goods on the opening day ________ get a big prize.
A．must B．shall C．would D．could 答案 B
解析 句意为：这家新开的超市宣布，第一个在开张那天购买商品的人将获得一个大奖。
shall在此处表示“许诺”。
9．—I phoned you yesterday morning.A girl answered，but I didn’t recognize the voice.
—Oh，it ________ my younger sister.She was in my room at that moment. A．must have been B．should have been C．could have been 答案 A
解析 句意为：——我昨天早上给你打电话了。接电话的是一个女孩子，但我没有听出是谁的声音。——哦，一定是我妹妹。当时她在我的房间里。表示对过去的肯定性推测，用“must＋have done”结构。
10．Visit the old man this afternoon？If you ________，make sure you wear sunscreens to protect your skin.
A．must B．can C．may 答案 A
解析 句意为：今天下午去拜访那位老人？如果你一定要去的话，一定要涂上防晒霜来保护你的皮肤。此处must表示“偏要，非得，硬要”。
11．It’s no use envying others’ success.It’s time you ________ hard. A．must work B．were to work C．work D．should work 答案 D
D．shall
D．may have been
12．—I think I’ll give Bob a ring.
—You __________.You haven’t been in touch with him for ages. A．should B．will C．may 答案 A
解析 should应该；will会；may也许；have to不得不。根据下句“You haven’t been in touch with him for ages.”可知此处表达的是“应该”，故选A。
D．have to
13．—Why didn’t you call me?
—Oh，my cell-phone ran out of power，otherwise I________ you. A．would call B．had called C．called D．would have called 答案 D
解析 英语中当表示条件时没有连词if，而是用otherwise、or、but、but for等形式来表达，这种类型的虚拟语气被称之为含蓄的虚拟条件句。本题中otherwise表示“否则”，相当于一个虚拟条件句。由“ran out of power”可知，这是一个与过去事实相反的虚拟，所以用“would/should/could/might＋have done”，故选D。
14．Your mother________have fallen asleep.You were making so much noise so late in the yard then！
A．mustn’t B．can’t C．mightn’t D．shouldn’t 答案 B
15．—________ you practise playing the piano at this time？You see it’s deep into the night!
—Oh，I’m sorry，Mum. A．Will B．Can C．Should D．Must 答案 D
解析 will会；can能够；should应该；must必须。must除了表示命令和要求外，还可以表示责备的语气，意思是“非要……不可吗”。故选D。
16．Had the governments and scientists not worked together，AIDS-related deaths ________ since their highest in 2005.
A．had not fallen B．would not fall C．did not fall
D．would not have fallen
答案 D
解析 根据题干，从句中had置于句首可知，此处为虚拟语气中省略连词if的情况。由从句中谓语动词had not worked (had done)可知，是对过去情况的假设，所以主句中的谓语动词应用would/could/might/should have done来表示对过去情况的假设，故选D。
17．But for the chances I was blessed with，my life ________ easily ________ a turn for the worse.
A．would；take B．will；have taken C．should；take D．could have；taken 答案 D
解析 句中but for表示条件，意为“要不是……”，表示与过去事实相反的假设，要用虚拟语气；对过去的虚拟，主句要用情态动词加完成时态来构成；will不能构成虚拟，故选D。
18．If only I ________ at the party last night！But I had to prepare for the conference.
A．were B．had been C．have been D．was 答案 B
解析 if only要是……就好了，表达要用虚拟语气，根据句中的时间状语last night，可以看出是对过去的虚拟，所以时态要用过去完成时had done，故选B。
19．Had it not been for your practical advice，we______such great achievements. A．would make B．wouldn’t have made C．didn’t make D．hadn’t made 答案 B
20．The teacher agreed to the suggestion that the students ____ two weeks to prepare for the exams.
A．give B．be given
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