【人教课标版】高考英语一轮复习 精品语法（课件）：专题8 正反解读情态动词和虚拟语气
19．[2010·浙江卷]
Had I known about this computer program，
a huge amount of time and energy ________.
A．would have been saved
B．had been saved
C．will be saved
D．was saved
【解析】 A 本题考查虚拟语气。根据Had I known提示，可知此句是虚拟语气，且与过去事实相反，故主句谓语用would have done的形式。此外本句还是被动，选A。 专题八 │ 实战演练 20．[2010·湖南卷]
You ________ buy a gift，but you can if you want to.
A．must
B．mustn't
C．have to
D．don't have to
【解析】 D 考查情态动词。
don’t have to意为“没有必要”，符合语境。
句意为：你没有必要买礼物，但如果你想买的话，你也可以买。 专题八 │ 实战演练 21．[2010·陕西卷]
— May I take this book out of the reading room?
— No，you________. You read it in here.
A．mightn't
B．won't
C．needn't
D．mustn't
【解析】 D 本题考查情态动词的用法。表示“禁止；千万别做某事”时，要用mustn't。 22．[2010·江西卷]
I have told you the truth. ________ I keep repeating it?
A．Must
B．Can
C．May
D．Will
【解析】 A 考查情态动词的用法。must在此意为“必须……吗？非得……吗？” ,句意为：前半句说我告诉你事实了, 这里用的是现在完成时, 表示过去的动作对现在造成了影响, 既然我已经说了, 我还必须重复一遍吗？ 专题八 │ 实战演练 23．[2010·江苏卷]
—
I haven’t got the reference book yet， but I'll have a test on the subject next month.
—
Don’t worry. You ________have it by Friday.
A．could
B．shall
C．must
D．may
【解析】 B 本题考查情态动词。
当主语为第二、三人称时，情态动词shall表示说话人给对方命令、警告、允诺或威胁，本句表示允诺。 专题八 │ 实战演练 24．[2010·江苏卷]
George is going to talk about the geography of his country，but I'd rather he ________ more on its culture.
A．focus
B．focused
C．would focus
D．had focused
【解析】 B 本题考查虚拟语气。
would rather＋从句，从句表示对现在或将来虚拟时应使用一般过去时。 专题八 │ 实战演练 25．[2010·全国卷Ⅰ]
Just be patient. You ________ expect the world to change so soon.
A．can't
B．needn't
C．may not
D．will not
【解析】 A 考查情态动词的用法。
句意：耐心一点儿, 你不能期望世界变化如此快。通过选项此题考查情态动词, can’t在否定句中可以表示推测, 译为不可能,可以表示能力, 译为不能够,语气强烈。也可以表示命令, 不允许, 但是语气比mustn’t弱, 具有劝慰的意思, 根据句意此题中选择A, can’t表示劝慰。 专题八 │ 实战演练 26．[2010·福建卷] Teachers recommend parents ________ their children under 12 to ride bicycles to school for safety.
A．not allow
B．do not allow
C．mustn't allow
D．couldn't allow
【解析】 A 考查虚拟语气。句意为：教师们建议：为了孩子们的安全，父母不应让12岁以下的孩子骑自行车去学校。recommend意为“建议”，其后接的宾语从句采用虚拟语气，从句谓语动词用“should＋动词原形”的形式，should可以省略。 专题八 │ 实战演练 27．[2010·天津卷] Mark ________ have hurried. After driving at top speed，he arrived half an hour early.
A．needn't
B．wouldn't
C．mustn't
D．couldn't
【解析】 A needn't have done 本没有必要做某事，实际上做了。句意：迈克本来不必要那么忙的。这么高速驾驶之后, 他早半个小时到达了。根据后面的语境, 提前半个小时到达, 说明Mark本来不必那么匆忙, 所以用needn’t
have done 结构, 表示 “本来不必要做某事的而实际上做了”。 专题八 │ 实战演练 28．[2010·重庆卷] You ________ park here! It's an emergency exit.
A．wouldn't
B．needn't
C．couldn't
D．mustn't
【解析】 D 考查情态动词词义辨析。由句意“这里是紧急出口”，可知此处不允许停车，所以用mustn't表示“禁止，不许”。 专题八 │ 实战演练 29．[2010·北京卷] —Good morning. I've got an appointment with Miss Smith in the Personnel Department.
—Ah，good morning. You ________be Mrs. Peters.
A．might
B．must
C．would
D．can
【解析】 B 本题考查情态动词在语境中的运用。 第一个说话人说和史密斯小姐有约, 那下面的人就回应说, "那您一定就是Mrs. Peters了“,用must来表示肯定推测。 30．[2010·山东卷]
I ____________ have watched that movie — it'll give me horrible dreams.
A．shouldn't
B．needn't
C．couldn't
D．mustn't
【解析】 A shouldn't have done意为“本不应该做但实际已经做了(表达后悔的情绪)” . e.g. You should have invited me to your wedding, but you forgot. 专题八 │ 实战演练 (3) 当条件从句的行为与主句所表示的行为所发生的时间不一致时，主从句中动词的形式要根据它所标示的时间作出相应的调整，这就是所谓的“错综条件虚拟语气”。如：
If they had studied hard, they could do it easily now. 如果他们以前努力学习的话，现在干得就会容易些了。
If he had not taken my advice, he wouldn't do it much better like this.
如果他不听我的建议，他就不会干得这么好了。 (4) 在条件句中，如果有were, had, should等，则可省略if，但应注意把were, had, should等提到从句主语之前。 专题八 │ 正面解读 如：If he were to come, I would join him in the discussion. ＝ Were he to come, I would join him in the discussion. 如果他来，我将和他一道参加讨论。 (5) 有些虚拟条件句没有从句，虚拟条件句是通过上下文或介词短语表示出来的。如：
But for air and water, there would be no life on the earth. 要是没有空气和水，地球上就没有生命。(介词短语but for提供了虚拟条件)
With your help, we might finish the plan earlier. 要是有你的帮助，我们就可以早些完成任务。(介词短语with your help充当虚拟条件句) 专题八 │ 正面解读 2．虚拟语气在wish从句中的用法 专题八 │ 正面解读 宾语从句 愿望 I wish 主语＋动词过去式 现在不能实现的愿望 主语＋had＋过去分词 过去不能实现的愿望 主语＋would/might＋动词原形 将来不能实现的愿望 I wish I were a doctor. 我希望我是个医生就好了。(现在) I wish that the rain would stop. 我希望雨能停下来。(将来) I wish that he had not made so much fuss about it.
我希望他不要把事情搞大了。(过去) 3． 虚拟语气在名词性从句中的使用 (1) 在insist；command，order；demand，request，require，desire；advise, propose, suggest，recommend 等表示“命令、要求、建议”的动词后接的宾语从句中要使用虚拟语气。如：
He suggests that she (should) leave the house at once. 他要她立刻离开这所房子。 专题八 │ 正面解读
He proposed that we (should) deal with the problem by the view of development.
他建议我们应该用发展的眼光处理这个问题。 (2) 与上述动词相对应的名词suggestion, order, demand , proposal 等后的表语从句、同位语从句中也要使用虚拟语气(should可省略)。如：
My proposal is that we (should) set a deadline for handing in the plan. 我的建议是为这个计划设定一个上交的期限。 专题八 │ 正面解读 (3) 在It be suggested (ordered, demanded, proposed, … )that… 结构中，主语从句中也要使用虚拟语气。如：
It's required that every student be on time for school.
要求每个学生准时到校。 (4) 在do you suggest/recommend用在特殊疑问句中作插入语时，句子的动词也使用虚拟语气，即“should＋动词原形”的形式，其中should可以省略。如：
What type of computer do you recommend/ suggest we (should) buy?
你建议我们买什么类型的电脑呢？ 专题八 │ 正面解读 (5) 在It's＋necessary，essential，important, strange, natural等形容词＋ that从句或It's a pity，a shame等名词＋ that 从句中，谓语动词可以使用should do。如：
It is necessary that the badly wounded man should be treated immediately. 这位重伤员必须马上治疗。
It's a pity that you should be so careless.
你竟然如此粗心，真是可惜。 专题八 │ 正面解读 4． 虚拟语气在状语从句中的用法
在as if/though引导的状语从句中，谓语动词用过去式表示与现在相反的情况；用过去完成式，表示与过去相反的情况等。其变化与wish后的宾语从句的变化相同。如：
I've loved you as if you were my relative.
我一直爱你仿佛你是我的亲人。 5． 虚拟语气在其他一些句型中的用法 (1) It's high/above time (that)从句中，谓语动词可以使用过去式，也可使用should＋动词原形；表示“早该……了”，其中should不可省略。如：
It's high/above time we got up/should get up. 我们早该起床了。 专题八 │ 正面解读 (2) would rather＋从句中，谓语动词用过去式表示与现在或将来的情况相反；用过去完成式，表示与过去的情况相反。如：
I would rather you came tomorrow. 我宁愿你明天来。 (3) if only…要是……多好啊。如：
If only you hadn't offended him. 你当时不惹他就好了。
If only he could come tomorrow. 他明天能来就好了。 (4) 其他一些表示祝愿的句型。如：
May you succeed！祝你成功！
Long live the People's Republic of China.
中华人民共和国万岁！
专题八 │ 正面解读 1.
【误】 The streets are all dry; it mustn't have rained last night.
【正】 The streets are all dry; it can't have rained last night.
【解析】 对某一事实的否定推测不能用must，而要用can't 或couldn't表示“不可能”。 专题八 │ 反面解读 反面解读 2． 【误】 I didn't see Mary at the meeting yesterday. She might be ill, I guess.
【正】 I didn't see Mary at the meeting yesterday. She might have been ill, I guess.
【解析】 猜的事情发生在昨天，因此要用情态动词＋have done形式，当动词是be时，很容易忽略它的时态意义，要特别留意。 3． 【误】 He must be very friendly at times.
【正】 He can be very friendly at times.
【解析】 句意为：他有时会很友好。可知此处并非对现在的状态进行推测，而是一种理论上的可能性，因此用can。 专题八 │ 反面解读 4． 【误】 I can't find my keys. I may/might forget them on the playground yesterday.
【正】 I can't find my keys. I may/might have left them on the playground yesterday.
【解析】 表示对过去情况的推测，通常用must/may/might have done sth. 另外，表示“把……忘记在某地”应用动词leave。 专题八 │ 反面解读 5． 【误】 The fire spread through the hotel quickly, but everyone could get out.
【正】 The fire spread through the hotel quickly, but everyone was able to get out.
【解析】 表示在过去成功地做到了某事，肯定句中通常用was/were able to do sth.。 专题八 │ 反面解读 6． 【误】 Will I open the window for you?
【正】 Shall I open the window for you?
【解析】 shall与第一、第三人称连用，表示征求意见或请求指示，这时不可用will。will通常与第二人称连用，即Will you…？ 7． 【误】 The plant is dead. Maybe I should give more water.
【正】 The plant is dead. Maybe I should have given more water.
【解析】 根据第一句可知，植物已经死亡，所以应该是自责：本应该多浇些水的。要用should have done形式表示“本应该做……而未做”。 专题八 │ 反面解读 8． 【误】 Hadn't they saved us, we would have been drowned in the stormy river.
【正】 Had they not saved us, we would have been drowned in the stormy river.
【正】 If they had not saved us, we would have been drowned in the stormy river.
【解析】 当条件中含有were, had, should等时，可省略if，从而把were, had, should提到主语之前。若条件句为否定句，则只把were, had, should提前，not仍放在主语之后。 专题八 │ 反面解读 9． 【误】 If only I saw the film yesterday.
【正】 If only I had seen the film yesterday.
【解析】 if only后句子若表示过去的一种愿望，其谓语动词应用过去完成式，即if only sb. had done sth. 。
专题八 │ 反面解读 1． — Everyone in my class passed the exam.
— Oh，really？It ________ difficult.
A．can't have been
B．needn't have been
C．must be
D．mightn't be
【解析】 A 考查情态动词。
表示否定的推测应使用 can‘t /cannot。
对过去进行推测，表示“一定不”应使用 can‘t have done。
句意为： “我们班上每个人都通过了考试。”
“哦，真的吗？那题目一定不难。” 专题八 │ 实战演练 实战演练 2． [2009·安徽卷]
Some people who don't like to talk much are not necessarily shy；they ________ just be quiet people.
A．must
B．may
C．should
D．Would
【解析】 B
句意为：有些人不喜欢讲话不一定是害羞，他们可能是安静的人。此处用may表示“可能”之意。 专题八 │ 实战演练 3． — Why didn't you answer the phone last night?
— I ________ when you called.
A．had to have slept
B．had to be sleeping
C．must have been sleeping
D．must have slept
【解析】 C 由时间状语和结合语境来看，这是对过去某个时间点正在发生事情的肯定推测，再结合题意，应该是must have been doing结构，选C。
专题八 │ 实战演练 4．When I lived with my roommates in the university, we ________ often talk into the night.
A．might
B．must
C．should
D．would
【解析】 D 这里描述的是过去经常发生的动作(或过去经常做的事情)。
e.g.
After dinner, he would sit around Grandpa, listening to his stories. 专题八 │ 实战演练 5． — This is the first time I ________ my first picture with my own hands.
— It is time that you ________ a picture for me.
A．took; took
B．have taken; took
