【名师正反解读】2014届高三英语一轮复习专项课件：情态动词和虚拟语气（72张PPT）

课件72张PPT。专题8 正反解读情态动词
和虚拟语气返回目录◇ 高考链接 ◇
1．[2012?江西卷] We ________ have bought so much food
now that Suzie won't be with us for dinner.
A．may not B．needn't
C．can't D．mustn't

[解析] B　本题考查情态动词。由后半句可知“既然
Suzie不和我们一起吃晚饭”，那么前面应该是说“我们
没有必要买那么多食物”。needn't have done sth意为
“本没有必要做某事”，符合语境。返回目录专题8 正反解读情态动词和虚拟语气2．[2012?安徽卷] Grace doesn't want to move to New York
because she thinks if she ________ there, she wouldn't
be able to see her parents very often.
A. lives B. would live
C. has lived D. were to live

[解析] D　考查虚拟语气。根据主句中的wouldn't可判
断是虚拟语气。if引导的条件状语从句对将来进行虚
拟，从句用were to do或should do或过去式。所以选D。返回目录专题8 正反解读情态动词和虚拟语气3．[2012?北京卷] We ________ the difficulty together, but
why didn't you tell me?
A．should face B．might face
C．could have faced D．must have faced

[解析] C　本题考查虚拟语气的用法。根据后面didn't
you tell me可知假设的是过去的事情，其实前面的句子
只有主句，从句省略了。全句应该是We could have
faced the difficulty together ( if you had told me). 句意：我们本来能一起共同面对困难的，但你为什么没告诉我？返回目录专题8 正反解读情态动词和虚拟语气4．[2012?福建卷] We lost our way in that small village,
otherwise we ________ more places of interest
yesterday.
A．visited B．had visited
C．would visit D．would have visited

[解析] D　本题考查虚拟语气。句意：昨天我们在那个
小村庄迷路了，否则我们本可以参观更多的名胜。本
句为含有otherwise的含蓄虚拟句，是对过去的虚拟，
故选D。返回目录专题8 正反解读情态动词和虚拟语气5．[2012?江苏卷] —Happy birthday!
—Thank you! It's the best present I________ for.
A．should have wished
B．must have wished
C．may have wished
D．could have wished

返回目录专题8 正反解读情态动词和虚拟语气 [解析] D　本题考查情态动词。句意：——生日快
乐！——谢谢你！这是我所期望的最好的礼物了。
could have wished “可能希望”，符合语境。should
have wished “本应该希望而实际上并非如此”；must
have wished “肯定希望”；may have wished “也许
希望”。返回目录专题8 正反解读情态动词和虚拟语气◇ 考点归纳 ◇
?　考点一　情态动词的基本用法
情态动词表示说话人的语气和情绪，本身词义不全，不能单独作谓语，必须与后面的动词原形一起构成谓语。情态动词没有人称和数的变化，有的情态动词有过去式。常见的情态动词有can, could, may, might, must, have to, shall, should, will, would, ought to, need, dare, used to等。返回目录专题8 正反解读情态动词和虚拟语气1．can, could的用法
规则1：表示体力或脑力(知识、技能)所产生的能力。如：
Her mother can speak French.
He could read books in English when he was only five.
规则2：表示客观的可能性。如：
Anybody can make mistakes.
Man cannot live without air.
规则3：表示请求建议，用could 比 can语气更委婉
(回答用原形)。如：
Could you wait a few days for the money?
Could you be here at eight o'clock tomorrow morning?返回目录专题8 正反解读情态动词和虚拟语气规则4：表示允许、许可，用could 比 can更委婉客气。
如：
Could/Can I borrow your reference books?
You can smoke in the entrance hall.
规则5：否定句、疑问句和感叹句中，表示怀疑、惊异、
不相信的态度。如：
Can it be true?
You can't be serious!
Oh, dear, what on earth can this mean?
返回目录专题8 正反解读情态动词和虚拟语气规则6：表示“经过努力后终于能……”用be able to。如：
They were able to put out the fire without any help from
the firefighters.
规则7：惯用形式“cannot (can't)…too/over/enough”。
表示“无论怎么……也不(过分)”，用来加强语气。
cannot/couldn’t but do sth. 不得不；只好。如：
You cannot be too careful.
I couldn't but choose to wait.返回目录专题8 正反解读情态动词和虚拟语气2．may, might的用法
规则1：表示允许、请求。
Might I…？ 比 May I…？ 语气更为委婉和有礼貌。
如：
—May I ask you a question?
—Yes, please.
—May I watch TV after supper?
—Yes, you may.或No, you may not./You'd better
not./You mustn't.(强烈的禁止语气)返回目录专题8 正反解读情态动词和虚拟语气规则2：表示可能性，表示“或许，大概”。用于肯定句
或否定句中，用might 比 may语气更加不肯定。如：
He may be very busy these days.
He might come tomorrow.
规则3：惯用形式 may(might) as well＋动词原形：不妨
做……，最好。如：
If that is the case, we may as well try.
Now that they were all here, she might as well speak her
mind.返回目录专题8 正反解读情态动词和虚拟语气规则4：表示祝愿(不用might)。采用部分倒装语序：
May＋主语＋动词原形＋……！如：
May you succeed!
May the friendship between our two peoples last forever!返回目录专题8 正反解读情态动词和虚拟语气3．must，have to的用法
规则1：must 表示“必须”。强调主观看法，只有现
在时形式，否定式是 must not (mustn't)， 表示
“禁止，不准”。 如：
Everybody must obey the rules.
You mustn't speak like that to your mother.
—Must I be home before eight o'clock?
—Yes, you must./—No, you needn't./No, you don't
have to.返回目录专题8 正反解读情态动词和虚拟语气规则2：must表示有把握的推测，意为“一定，肯定”，
用于肯定句中。如：
You must be hungry after the long walk.
Home cooking must be more delicious.
规则3：have to表示“必须，不得不”，着重强调客观需
要，能用于更多时态(过去式和将来式)。如：
The students today will have to know how to use
computers.
As he had broken his leg, he had to lie in bed.返回目录专题8 正反解读情态动词和虚拟语气规则4：must 有“偏要、硬要”之意。如：
—How old are you, madam?
—If you must know, I'm twice my son's age.返回目录专题8 正反解读情态动词和虚拟语气4．will，would的用法
规则1：用于各种人称，表示意志或决心。will指现在，would则指过去。如：
I will do my best to help you.
They said that they would help us.
规则2：用于第二人称的疑问句中表示有礼貌的询问和请求，would 比 will更委婉。如：
Would you teach us how to drive a car?
Will you please give him a message when you see him?返回目录专题8 正反解读情态动词和虚拟语气规则3：表示习惯性、经常性、倾向性，意为“总是，
惯于”。 will指现在，would指过去。如：
Fish will die without water.
He will sit for hours reading.
He would come to see me on Sunday when he was in
Beijing.
规则4：表示说话人的推测，意为“大概，也许”。
would 的肯定性不如will强，语气比较弱。如：
That will be the man you want to see.
Perhaps she would be willing to meet us.返回目录专题8 正反解读情态动词和虚拟语气规则5：表示功能，译作“能”或“行”。如：
That will do.
The machine won't work.
He tried the door again, but it wouldn't open.
规则6：would 与used to 的区别：
(1)used to 表示过去的某种习惯，现在已经没有那样的习惯了，侧重现在与过去的对比；would 只表示过去有某种习惯，没有侧重现在与过去的对比。
(2)表示过去的状态，只能用used to，不能用would。如：
There used to be a park here.返回目录专题8 正反解读情态动词和虚拟语气5．shall, should, ought to的用法
规则1：表示征询意见，用于第一、第三人称疑问
句。如：
Shall I get you some tea？我给你点儿茶好吗？
温馨提示 Shall I/we…？的回答，可用Yes, please./
All right./I'm sorry, but…等。返回目录专题8 正反解读情态动词和虚拟语气规则2：表示说话人的意愿，有“命令，允诺，警告，
决心”等意思，用于第二、第三人称。如：
You shall do as I say.按我说的做。(命令)
You shall have my answer tomorrow.
你明天可以得到我的答复。(允诺)
规则3：shall用在条约，规章，法令等文件中，表示
必然结果，多用于第二、三人称，常译为“必须”。如：
“The interest shall be divided into five parts, according
to the agreement made by both sides.” declared the
judge. 法官宣判，“利润应按照双方协定分成五份。”返回目录专题8 正反解读情态动词和虚拟语气温馨提示 must表示“必须”，只是一种主观要求，语气与shall相比，差之甚远。返回目录专题8 正反解读情态动词和虚拟语气规则4：should表义务，意为“应该”，可用于各种人称。
如：
You should be polite to the old.你对老人应该有礼貌。
规则5：should表示推测或责备，意为“想必一定，照
说应该，估计”等；表推测时往往指推测有一定的
依据。如：
The film should be very good as it is starring first-class
actors.这部电影是一流演员主演的，估计拍得很好。
It's 8 o'clock now. They should be home now.
现在是8点了。他们应该在家。返回目录专题8 正反解读情态动词和虚拟语气规则6：should用于表示惊奇、遗憾不该发生的事情，
常译作“竟然”。如：
Why should you be so late today?
你今天竟然这么晚？
规则7：在大多数情况下，ought to都可以被should代
替。ought to语气比should重，往往表示从法律上或从
道义上“应该”。如：
You shouldn't judge a stranger always by the clothes he
wears.你不应当总是以貌取人。
Parents ought to send their children to school when they
reach seven years old.
当孩子满七岁时，家长应该送孩子去上学。返回目录专题8 正反解读情态动词和虚拟语气6．need的用法
规则1：need作情态动词表示“需要，必要”。通常用于否定句、疑问句、条件句中，且只有现在时，其他时态用“have to”的相应形式代替。如：
You needn't water the tomato plants now.
—Need he come now?
—Yes, he must./No, he needn't/he doesn't have to.返回目录专题8 正反解读情态动词和虚拟语气规则2: need还可以用作行为动词，其变化和一般的动
词相同。若主语为动作承受者时用动词主动形式表示
被动意义或用不定式的被动形式。如：
We need to have a rest.
The house needs repairing.
＝The house needs to be repaired.
规则3：“Must…？”一般疑问句的否定回答要用：
No，sb. needn't/don't have to等。如：
—Must I finish my homework now?
—No，you needn't/don't have to.返回目录专题8 正反解读情态动词和虚拟语气7．dare的用法
规则1：dare作情态动词表示“敢于”，用于否定句、 疑问句和条件句中。如：
She dare not go there.
How dare he do such a thing?
规则2：惯用短语“I dare say”意为“我想，大概”。
如：
I dare say he is right.返回目录专题8 正反解读情态动词和虚拟语气规则3：dare还可以用作行为动词，其变化与一般动词
相同。如：
The girl didn't dare to go home.
Do you dare to jump into the ocean?
I don't dare (to) ask her.
温馨提示
在否定句中，dare后的“to＋动词原形”可以省略to。返回目录专题8 正反解读情态动词和虚拟语气?　考点二　情态动词的其他用法
can/must/may/should这4个情态动词可以用来对
现在的情况、过去已经发生的动作或将来发生的行
为进行推测，或表示现在、过去的一种可能性。返回目录专题8 正反解读情态动词和虚拟语气1．情态动词＋动词原形
规则1：can 用于否定句和疑问句中，表示对现在状态、现在正在进行的动作的推测。
(1)用于否定句，意为：“不可能”。如：
He is in hospital. He can't be at school.
(2)用于疑问句，意为：“会不会”。如：
Can he be free now?返回目录专题8 正反解读情态动词和虚拟语气规则2：may 用于肯定句和否定句中，表示对现在的
状态、现在正在进行的动作的推测。
(1)用于肯定句，意为“也许，可能”(might 的可能性比may更小)。如：
He has a car. He may come by car, but I am not sure.
(2)用于否定句，意为：“也许不/没有，可能不/没有”。如：It is raining so hard. My friend may not come.
规则3：must 表示猜测时，常与be连用，只能用于肯
定句，意为：“肯定，必定”。如：
The baby doesn't want anything. She must be full.返回目录专题8 正反解读情态动词和虚拟语气规则4：should/ought to表示猜测时，只能用于肯定
句，意为“理应，应当”(依据常规、常理、风俗、习惯
等进行推测)。如：
The new coat ought to be ready on Thursday.
It's 9：00. The supermarket should be open.返回目录专题8 正反解读情态动词和虚拟语气2．情态动词＋完成式
规则1：must have done 表示对过去所发生的事情的 肯定推测，意为“一定做过某事”，如：
There's no light in the room. They must have gone to bed.
规则2：can‘t/cannot have done 表示过去所发生行为的不可能性，通常用在否定句和疑问句中。
could have done 表示过去本可能发生而实际上未发 生的事情，意为“本可以”。如：
You could have done the work better.
你本来可以把工作做得更好一些的。返回目录专题8 正反解读情态动词和虚拟语气规则3：may/might have done 表示过去也许/或许已
经……；本来可能……(但实际上没有发生)。 如：
He might have given you more help, even though he
was very busy.
规则4：should/ought to have done 表示“本该做而实际
上未做的事情”，其否定式意为“本不该做的事情，结
果已经做了”，它们含有责备之意。如：
You ought to have done the exercise more carefully.
规则5：needn't have done表示“本来不必做而实际上做
了的事情”。如：
You needn't have come over yourself. You could have
given me a ring instead.
你本来不必亲自来，只要给我通个电话就行了。返回目录专题8 正反解读情态动词和虚拟语气温馨提示
(1)当must作“必须”意义讲时，其反意疑问部分用needn't;_当含有mustn't时，其反意疑问部分用must/may。如：
You must go now, needn't you?
You mustn't smoke here, must/may you?
(2)当情态动词must表推测时，反意疑问部分助动词的使用要根据情态动词后面所隐含的时间来确定，
如：You must be hungry now, aren't you?
You must have heard about it, haven't you?
You must have watched that football match last night, didn't you?返回目录专题8 正反解读情态动词和虚拟语气?　考点三　虚拟语气
1．虚拟语气在条件句中的用法
规则1：条件与现在事实相反， 从句谓语用一般过
去时(be动词用were)； 主句谓语用
would/should/could/might ＋动词原形。
规则2：条件与过去事实相反， 从句谓语用过去完成时
had done； 主句谓语用would/should/could/might＋
have done。 如： If I had done it in time, I should have
had a good time. 如果我及时做的话，日子就好过多
了。(可惜当时没能及时做)
返回目录专题8 正反解读情态动词和虚拟语气规则3：条件与将来事实相反，从句谓语用should
do/were to do或一般过去时；主句谓语用
would/should/could/might＋动词原形。如：
If it were to rain tomorrow, I should not drive my car.
如果明天下雨的话，我就不开车了。(明天的情况还不
知道)
规则4：主句中的should通常用于第一人称，would可
用于任何人称。返回目录专题8 正反解读情态动词和虚拟语气规则5：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表
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，现在做得就会容易些了。
If he had not taken my advice, he wouldn't do it much
better like this.
如果他过去不听我的建议，他就不会做得这么好了。返回目录专题8 正反解读情态动词和虚拟语气规则6：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。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。返回目录专题8 正反解读情态动词和虚拟语气规则7：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相当于虚拟条件句)返回目录专题8 正反解读情态动词和虚拟语气 2．虚拟语气在wish从句中的用法
规则1：表示愿望与“现在事实相反”，从句用一般
过去时。如：
I wish I were you.
How he wishes that he were a bird!
规则2：表示愿望与“过去事实相反”，从句用过去
完成时。如：
I wish I had seen the film last night.
We wish that we had visited the Great Wall last year.
规则3：表示愿望实现的可能性很小，从句常用
could/might/would＋动词原形。如：
We wish we would live on the moon one day.返回目录专题8 正反解读情态动词和虚拟语气 3．虚拟语气在名词性从句中的使用
规则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 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。返回目录专题8 正反解读情态动词和虚拟语气规则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。
规则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。返回目录专题8 正反解读情态动词和虚拟语气规则4：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？返回目录专题8 正反解读情态动词和虚拟语气规则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。返回目录专题8 正反解读情态动词和虚拟语气4．虚拟语气在状语从句中的用法
规则1: so that/in order that目的状语从句： 从句用 can/could/may/might＋动词原形。
规则2: for fear that/in case that 目的状语从句：从 句用should＋动词原形，意为“以防，万一”。
规则3：as if/as though方式状语从句：从句的虚拟 语气与wish 后的宾语从句虚拟语气类似。如：
I've loved you as if you were my relative.
我一直爱你仿佛你是我的亲人。返回目录专题8 正反解读情态动词和虚拟语气5．虚拟语气在其他一些句型中的用法
规则1： It's high 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 time we got up/should get up.
我们早该起床了。
规则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。
返回目录专题8 正反解读情态动词和虚拟语气规则3：if only…但愿，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。
规则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！返回目录专题8 正反解读情态动词和虚拟语气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”。返回目录专题8 正反解读情态动词和虚拟语气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] 猜测的事情发生在昨天，因此要用“情态动
词＋have done”的形式。当动词是be时，很容易忽
略它的时态意义，要特别留意。返回目录专题8 正反解读情态动词和虚拟语气3．【误】 He must be very friendly at times.
【正】 He can be very friendly at times.
[解析] 句意：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。返回目录专题8 正反解读情态动词和虚拟语气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……落在某地”应用动词leave。返回目录专题8 正反解读情态动词和虚拟语气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] 表示成功地做到了某事，肯定句中通常用
be able to do sth.。返回目录专题8 正反解读情态动词和虚拟语气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…？返回目录专题8 正反解读情态动词和虚拟语气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”。返回目录专题8 正反解读情态动词和虚拟语气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。返回目录专题8 正反解读情态动词和虚拟语气◇ 实战演练 ◇
1．—I'd love to go to the party with you tonight.
—Oh, I'm sorry. There ________ be a party because of
the coming exam.
A．mustn't B．needn't
C．can't D．oughtn't

[解析] C　考查情态动词的用法。can't不可能，表推测。由语境可知，由于马上要考试了，不可能举行晚会。返回目录专题8 正反解读情态动词和虚拟语气2．If people eat natural plant poisons by mistake, they ________ go to hospital without delay.
A．would B．can C．may D．must

[解析] D　考查情态动词。根据后半句中的without delay可知如果人们误吃了天然植物毒，他们“必须”马上去医院，一刻也不能耽误。返回目录专题8 正反解读情态动词和虚拟语气3．—I don't mind telling you what happened.
—You ________. I'm not asking you for it.
A． mustn't B． may not
C． can't D． needn't

[解析] D　考查情态动词。句意：——我不介意告诉你所发生的事情。——你没必要告诉我。我没有要求你那样做。mustn't “不可以”； may not “不许可”； can't “不可能”； needn't “没必要”。返回目录专题8 正反解读情态动词和虚拟语气4．You have a big mouth, Li Fei. You ________ have told everybody the secret.
A．can't B．mustn't
C．shouldn't D．mightn't

[解析] C　考查情态动词。从语意“你本不该把这个秘密告诉所有的人”可知，此处是对过去事情的推测，应用shouldn‘t have done, 意为“过去本不该做某事(但实际上却做了)”。返回目录专题8 正反解读情态动词和虚拟语气5．The weather turned out to be fine. I ________ the trouble to carry the umbrella with me.
A．should have taken B．needn't have taken
C．mustn't have taken D．could have taken

[解析] B　句意：结果天气不错，我本不必费那么大劲带着雨伞的。根据turned可知是叙述过去的情况，根据语境可知用needn't have done本不必做却做了；A项：本该做却没做；D项：本来能够……；C项形式不正确。返回目录专题8 正反解读情态动词和虚拟语气6．He that makes himself a sheep ________ be eaten by the wolf, as the saying goes.
A．shall B．could
C．will D．should

[解析] A　考查情态动词的用法。句意：正如谚语所说“人善被人欺”。shall用陈述句与第三人称连用，表示说话人的意图、警告、命令、允诺、决心等语气。返回目录专题8 正反解读情态动词和虚拟语气7．—Thomas didn't come to school for the meeting, did he?
—No. He ________. The meeting had been cancelled.
A．shouldn't have come
B．should not come
C．didn't need to come
D．wouldn't have come

[解析] C　考查情态动词。由答语可知会议已经取消
了，Thomas过去也就不必出席学校的会议，故用didn't need to do sth.。返回目录专题8 正反解读情态动词和虚拟语气8．—I plan to pay Tracy a visit next Sunday.
—I agree. You know, she ________ come to see us on Sunday when we were in America.
A．might B．should
C．would D．could

[解析] C　考查情态动词。would表示过去反复发生的动作或某种倾向。句意：——我打算下个星期天去看一看Tracy。——我同意。你知道，我们在美国的时候，她星期天常来看我们。返回目录专题8 正反解读情态动词和虚拟语气9．If you think the price of beef is too high, you ________ as well buy some pork. It depends on you.
A．should B．will
C．would D．may

[解析] D　考查情态动词。may as well是固定短语，意为“不妨，最好”，符合语意。句意：如果你认为牛肉太贵的话，你不妨买些猪肉。你自己决定。返回目录专题8 正反解读情态动词和虚拟语气10．I may let you get away with your bad behaviour this time, but I must warn you that if this happens again you ________ be punished.
A．will B．must
C．can D．shall

[解析] D　考查情态动词的用法。句意：这次我可以饶了你，但我先把话说明白，要是你下次再犯的话，你是要受处分的。shall用于第二人称，表示劝慰、告诫或许诺，故选D。返回目录专题8 正反解读情态动词和虚拟语气11．I ________ sooner but I didn't know that they were waiting for me.
A．had come B．was coming
C．would come D．would have come

[解析] D　考查虚拟语气。句意：我不知道他们一直在等我，要不然我肯定会迅速点儿。根据句意可知，这里是对过去的虚拟，故主句用“would have done”的形式，选D项。返回目录专题8 正反解读情态动词和虚拟语气12．He stood up and offered her his seat, as if he ________
her mind.
A． had told B． was telling
C． had read D． was reading

[解析] C　考查虚拟语气和动词辨析。句意：他站起来给她让座，似乎猜出了她的心思。本句是对过去情况的假设，所以用过去完成时。read sb.'s mind表示“猜测某人的心思”。返回目录专题8 正反解读情态动词和虚拟语气13．—What courses are you going to take next term if you
want to receive enough credits to get your degree?
—I don't know. But it's about time ________ on
something.
A． I'd decided B． I decided
C． I decide D． I'm deciding

[解析] B　考查从句中的虚拟语气。 在 “It's
about/high time that…”句型中，that从句的谓语动词
通常用一般过去时或者“should＋动词原形”，表示
“是该做某事的时候了”。返回目录专题8 正反解读情态动词和虚拟语气14．If you had brought your swimsuit with you, we
________ swimming in the lake now.
A． could go B． could have gone
C． can go D． have gone

[解析] A　考查虚拟语气。句意：如果你此前带着泳衣的话，现在我们就可以在湖中游泳了。本句是混合虚拟条件句，前半句是对过去情况的假设，后半句是对现在事实的假设。故选A项。返回目录专题8 正反解读情态动词和虚拟语气15．________ anything, give me a call and I'll be glad to help you.
A． Had you required B． Should you require
C． You required D． You had required

[解析] B　考查虚拟语气和倒装。句意：如果你有什么要求，给我打个电话，我将乐意帮助你。根据句意可知，此处是对将来情况的假设，前半句是 “If you should require anything”的省略形式，省略if后，需要将should提到主语前，此处should表示“假如；万一”。返回目录专题8 正反解读情态动词和虚拟语气