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情态动词及例句

作者:高考题库网
来源:https://www.bjmy2z.cn/gaokao
2021-02-01 14:50
tags:

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2021年2月1日发(作者:先)


?



1.


表能力、能够


(


现在,过去时


)



?



Some of us can use the computer now, but we


couldn’t


last year.



?



2. can


表请求和许可




?



1)


表请求时,口语中常用


could


代替


can


使语

< br>气更委婉,回答时用


can



?



--- Can/Could I use your dictionary



?



---Yes,


you can. No, you can’t.



?



2)


表示“许可”,可与


may


换用




?



You can go home now.



?



3.


表推测。



表惊讶、怀疑、不相信。用于否定


,


疑问句和感叹句。



?



I am sure you can't play it well.



?



How can you say that



?



惊异,不相信




?



4.


客观可能性


常用于肯定的陈述句中,表示理论


上的或习惯上的可能性


,


”有时可能会”,不涉及具


体事件。



?



Everybody can make mistakes.



?



5. could + have + done


本可以做但 没做表示对


过去能做而未做的事情感到惋惜,遗憾


Could not


have done


不可能做




?



It’s a pit


y. Your class could have got the


first prize.



?



If he studied hard recently



he couldn't


have failed the exam.



一.



May



might



1)


表示允许或征询对方许可,



允许,有“可以”之


意,


< p>
一般疑问句否定回答用


can


< br>t/mustn



t





请求对方许可时,如果


Might I




就比用


May


I




语气更婉转些,



May I have a dance with you



--Yes



you may/can.



--


No, you can’t/mustn’t.



(2)


表示推测,可能性,



多用于肯,否句,“或


许”、“可能”之意,如果用

might


表示可能性更


小,


may/might have done


表示对过去的事情进行


可能的猜测



They may be in the library now.



Mary may have gone to the concert last night.



3



.may


表祝愿



May you succeed



三.


Must



?



(1)must

< br>表示义务或强烈的劝告说话人主观上


“必须”、“应该”之意,其否定式



must not


,缩


写形式为



mustn



t


,表示“不应 该”,“不准”、


“不许可”或“禁止”之意



?



We must study hard and make progress


every day.



?



You mustn‘t touch the fire.





?



(2)



must


提出的疑问句否定回答用< /p>


needn't


或用


don't (doesn't) have to (





)


来回答,


而不用


mustn't



mustn't

< p>
表示的是“禁止”或“不


许可”之意,



?



---Must we finish the work tomorrow



---


No, you needn’t/ don’t have to, but you


must finish it in three days.



?




3



must


:表推测用于肯定句(十分肯定)


“一定…,肯定…”



Betty must be in the next room.



?



4



.


表某人非得或偏偏做某事



?



Must you make so much noise



四.


Will



?



(1)will

< br>用于第二人称疑问句,表请求或征求


意见,


would


语气委婉




?



1)Will you lend me your book



?



2) Would you like a cup of tea



?



(2)


用于各人称,可以表示“意志”或“决


心”,(


would


用于过去情况)




?



I will be right here waiting for you.



?



I would go with him if he saved my


brother.



?



(3)will

< br>可以表示一种习惯性的动作或某种倾


向,有“总是”或“会要”之意,

< p>
would


可以表示


过去的习惯动作,比


used to


正式,并没有“现已无


此习惯 ”的含义



?



Every morning he will have a walk along


this river.



?



Every evening, she would sit by window,


deep in thought.



?



4)


多用于否定句中,表示“不肯、就是不




?



This door won’t open.



?




5


)表示公用能力“能”



?



The room will seat 100 persons.



?




6


)表猜测,


will


主要用于第二、三人称 ,


will be(


对目前情况的推测


)



will have done(


将来


完成


)



would


表料想或猜想,


would have done


本想


做而没做




?



Maybe by then you will have changed


your mind.



?



五。


Shall



?



1. shall


用于一、三人称疑问句。征求意见


或请求。



?



Shall we dance



?



2. Shall


用于二、三人称:表说话人给对方


的许诺、命令” 、“警告”、“强制”、“威胁”


...


?



He shall go first, whether he wants to


or not.



?



If you do well in your study, you shall


get a gift.




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