情态动词常规用法例句.pptVIP

情态动词共15个: can, may, must, need, dare, will, shall, would,should, used to, have to, ought to, be able to,had better,would rather 1情态动词的常规用法can: 表示能力,准许,可能性,请求,提供帮助,惊异等 may: 表示准许,可能性,请求. must: 表示必须，应该，猜测.need: 表示需要，通常用在否定句和疑问句中，还可以做实义动词. dare:敢，用于否定句和疑问句中，还可以做实义动词will：愿意 shall：请求对方允许，警告，威胁 would：客气请求should：应该=ought to used to: 过去常常做某事have to:不得不ought to: 应该be able to:能够 had better最好would rather宁愿 2. 情态动词的猜测用法must be肯定是can’t be肯定不是may be也许是must have done肯定做过某事can’t have done不可能做过某事may/might have done也许做过某事 3委婉客气地批评责备的用法should have done sth=ought to have done sth本来应该做某事，但没做shouldn’t have done sth=ought not to have done sth本来不应该做某事，但做了 could have done sth本来有能力做某事，但没做needn’t have done sth本来没必要做某事，但做了 ***情态动词用法40句*** 1.I can use the computer now, but 10 years ago I couldn’t. 2.He can go home now but you can’t. 3.(There is a knock on the door)Who can it be? It may be Mr. Wang. 4.He said I could use his book. 5.I thought the story couldn’t be true. 6.May I use your telephone? Yes, you may. No, you mustn’t. No, you had better not. No, you may not. 7.They may have a lot of work to do.8.He said that we might use his bike.9.You must finish your homework today.10.You mustn’t smoke in the meeting room.11.Must I be back before 10 o’clock? Yes, you must. No, you needn’t. No, you don’t have to.12.Look, that man must be a thief.13.It is dark, we have to go home.14.He had to tell the truth to his parents. 15.Need I go there? Yes you must. No, you needn’t. No, you don’t have to.16.You ought to/should help your mother with the housework.17.You ought not to /shouldn’t wear dirty clothes.18.I will tell you my secret.19.He won’t go to the dancing party alone. 20.Will you go to the library with me?21.Would you like some apples?22.Would you like to help me with my English 23.They said that they would help us.24.Where shall I wait for you?25.Shall we start the meeting now?26.He used to live in the countryside