新概念英语语法：常用情态动词及例句.docx

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1、新概念英语语法：常用情态动词及例句序号词义情态单词 用法说明 例 句1能、会can智力、体力的自然能力I can use the computer.I can speak English.could同上、语气婉转Could you swim? be able to经过努力达到的能力I am able to speak English.2征询意见、得到许可cancould(婉转）口语、非正式Can/Could I use your bike?Yes, you can./No, you cantmay书面语、正式May I come in?shall第一、三人称疑问句中Shall he come

2、in，manager?Shall I tell him about it?willwould(婉转)第二人称疑问句中Will you go with me?Would you like some fish?3意愿shall第二、三人称肯定句（含命令、许诺、惊讶、警告等义 ）You shall do as I say.He shall get the key tomorrow.will 各人称、（决心）I will tell you all about it.4应该must主观（必须）I must go now.Must I go now?Yes, you must. /No,you needn

3、t.have to客观（不得不）I have to go now.You dont have to go now.should建议、劝告We should study hard.本应该做的事而没做You should have come earlier.ought to语气比should强You ought to study hard.序号词义情态单词 用法说明 例 句5猜测must：肯定(90%)肯定句must+be/do(现在、进来）He must be at home.must+have+done(过去）He must have gone.may：可能(50%)肯定句、否定句may+be

4、/do(现在、进来）He may be at home.may+have+done(过去）He may have gone.might：或许(30%)might+be/do(现在、进来）He might be right.might+have+done(过去）He might have come back.can：肯定不（90%）问句、否定句can+be/do(现在、将来）He cant be at home.can+have+done(过去）He cant have gone.6规律习惯willwill(现在、将来）would（过去）I will be 17 next year.Fish w

5、ill die out of water.When I was a child,I would cry.used to 强调过去的习惯而现在已没有了I used to swim.Used you to swim? Yes,I used to.Did you use to swim? Yes, I did.7需要need 既是情态动词，又是实义动词He neednt go.=He doesnt need to go.Need he come now?Yes, he must. /No, he needntDoes he need to come now?Yes ,he does. /No, he doesnt.8敢dare 既是情态动词，又是实义动词I dare not do so.=I do not dare to do so.Dare you walk at night alone?Yes,I dare. /No, I dare not.Do you dare to walk at night？Yes, I do. /No, I dont.1. 情态动词有一定的词义，表示某种感情和语气，但不能单独做谓语，必须和其他动词 （原形）一起构成谓语。2. 情态动词没有人称、数的变化，即情态动词第三人称单数不加-s学科网（北京）股份有限公司