(
课件网) 语法突破 写作指导 情态动词的基本用法 情态动词本身有一定的意义,但不能独立作谓语,没有人称和数的变化,后面必须接动词原形。常见的情态动词有: may,must,need,have to 等,具体用法见下表: 1.can/could 情态动词 用法 例句 can 表示能力,意为“能、会”,可与be able to转换。 Sam can speak English well. 表示请求、允许,意为“可以”。 Can I borrow your bike could can的过去式,意为“能、会”,表示过去的能力。 Lang Lang could play the piano well when he was young. 在疑问句中表示委婉的请求。 Could I have one cup of tea 2.must /have to 情态动词 用法 例句 must 表示主观看法,意为“必须、应该”。 You must finish your homework first! must的否定式mustn’t,表示“禁止,不允许”。 You mustn’t smoke here. must引导的疑问句,否定回答用needn’t/don’t have to。 —Must I finish my work now —No,you needn’t/ don’t have to. have to have to不得不,表示客观原因。 He had to stay at home because of the heavy rain. 3.may/might 情态动词 用法 例句 may 表示请求、许可,意为“可以”,表示祝福和愿望。 You may sit here if you want. May you be happy! 以may引导的一般疑问句的否定回答应为can’t /mustn’t。 —May I look at your CD player —No,you mustn’t/can’t. might may的过去式。 He asked if he might go home. 表示请求、许可,语气比may更委婉。 Might I smoke here 4. need 情态动词 用法 例句 need 表示需要、必须,主要用于否定句和疑问句中,肯定回答用must,否定回答用needn’t。 —Need I turn off the light now —Yes,you must. (No,you needn’t.) 5.should/shall 情态动词 用法 例句 should 用于各人称,表示劝告、建议,意为“应该、应当”。 You should come to the party on time. shall 用于第一人称,表示建议或请求,意为“……好吗”。 Shall we ride our bikes to the park shall 作情态动词,用于陈述句的第二、三人称,表示说话人的意愿,有命令、警告、强制、允许等含义。 You shall do as I told you. 6.will/would 情态动词 用法 例句 will/ would 作情态动词,表示决心、意愿,意为“要……,想……”。 We will take a walk after supper. He said he would do anything for me. will/ would 用于疑问句中,常用于第二人称,表示请求、征求意见。 Will/Would you please do the dishes 单项选择 ( )1.It’s a rule that students bring mobile phones to our school. (2019抚顺) A.mustn’t B.wouldn’t C.needn’t D.couldn’t ( )2.You walk on the wet hill path because you fall and hurt yourself. (2019天津) A must;might not B.mustn’t;might C.needn’t;need D.must;must A B ( )3.—Is the woman Miss Zhao —It be her. She has gone to Qingdao for a meeting. (2019葫芦岛) A.can’t B.needn’t C.must D.may ( )4.— I have a word with you, Mr. Green It won’t take long. —Okay.(2019包头) A.Should B.May C.Need D.Must ( )5.You be very tired with the long drive. Let’s stop to have a rest. (2019日照) A.must B.can C.shall D.need A B A ( )6.“Dad, my bike is broken. I use yours ” “Sure! It’s in the backyard.”(2019贵阳) A.Must B.Should C.May ( )7.He like coffee. I see him drink a cup at times. (2019南通) A.must B.may C.can’t D.mustn’t ( )8.—Mum, may I go to see ... ...
