高中情態(tài)動(dòng)詞用法總結(jié)

1、1Revision for Modal Verbs 2The basic uses of Modal Verbs 6、Dare 7、Need 8、ought to 9、三點(diǎn)說(shuō)明、三點(diǎn)說(shuō)明 10、典型錯(cuò)誤典型錯(cuò)誤 1、Can / could 2、May / might 3、Must 4、Shall / should 5、will / would 31. Can 1.表示能力 The parrot can speak three languages.2.表示允許 Can I borrow the book from the library.3.表示可能性 Shanghai can be very

2、cold in March.Could 過(guò)去式；語(yǔ)氣更委婉2. Can 與 be able to1.Can 表示習(xí)慣能力，表示習(xí)慣能力， 而而be able to表示經(jīng)過(guò)那里而做成了某事。表示經(jīng)過(guò)那里而做成了某事。2. 在否定結(jié)構(gòu)中，二者可以互換。在否定結(jié)構(gòu)中，二者可以互換。3. can./could + have +p.p1.在否定、疑問(wèn)句中表示在否定、疑問(wèn)句中表示“對(duì)過(guò)去發(fā)生行為對(duì)過(guò)去發(fā)生行為 的可能性猜測(cè)。的可能性猜測(cè)。2. 在肯定句中表示在肯定句中表示“本來(lái)可以做而未做本來(lái)可以做而未做”1. The door was lacked. She couldnt have been at h

3、ome.2. You could have been more careful.41. May 1.表示可能性2.表示允許3.表示祝愿Might 過(guò)去式；語(yǔ)氣更委婉2. may/might + have +p.p1.在否定、肯定句中表示對(duì)過(guò)去動(dòng)作的推測(cè)在否定、肯定句中表示對(duì)過(guò)去動(dòng)作的推測(cè) “也許是也許是”2. Might+have+p.p表示虛擬，表表示虛擬，表“勸告、責(zé)備之意。勸告、責(zé)備之意。”Eg. 1. She may be still waiting for us. 2. May I come in? 3.May you have a happy holiday.Eg. 1. He m

4、ight have spoken to her yesterday. 2. You might have told me earlier.51. Must 1.表示肯定的猜測(cè)表示肯定的猜測(cè),但只用于肯定句，但只用于肯定句，2.而而mustnt 表示表示“禁止、不準(zhǔn)禁止、不準(zhǔn)”2. Must 、have to 與have got to1.Must表示主觀表示主觀2.Have to表示客觀需求表示客觀需求3.Have got to 多見(jiàn)于口語(yǔ)多見(jiàn)于口語(yǔ)3. must + have +p.p對(duì)過(guò)去事情的肯定猜測(cè)。對(duì)過(guò)去事情的肯定猜測(cè)。Eg. The road id wet. It must have

5、 rained last night.61、Shall /should 1、第一、三人稱疑問(wèn)句中表示、第一、三人稱疑問(wèn)句中表示“請(qǐng)求請(qǐng)求 或征求對(duì)方意見(jiàn)?；蛘髑髮?duì)方意見(jiàn)。Eg. Shall I get you a cup of coffee?2、第二、三人稱陳述句中、第二、三人稱陳述句中1、表示允諾、表示允諾“會(huì)（得到）。會(huì)（得到）。2、表示命令、表示命令/警告警告威脅威脅 “該回必須該回必須”2、shall/should + have +p.p ought to表示本應(yīng)該做而未做。表示本應(yīng)該做而未做。should 過(guò)去式 語(yǔ)氣更委婉Eg. You should have been five

6、minutes ago.7Will/ would 1、表示意愿、表示意愿 Ill try my best to overcome the difficulty.2、表示意圖、表示意圖What will you do?3、表示請(qǐng)示、表示請(qǐng)示 Will you halp me to put these books in order?4、表示習(xí)慣動(dòng)作、表示習(xí)慣動(dòng)作She will sit for hours without saying a word.Would 與 used to 1、Would 后只能接表示動(dòng)作的動(dòng)詞。后只能接表示動(dòng)作的動(dòng)詞。2、used to 則還可以接表示狀態(tài)的動(dòng)詞。則還可以

7、接表示狀態(tài)的動(dòng)詞。Eg. He used to be a worker.81、情態(tài)動(dòng)詞用于否定、疑問(wèn)句；條件從句中。、情態(tài)動(dòng)詞用于否定、疑問(wèn)句；條件從句中。 eg. 1. Dare you go here alone? 2. How dare you do such follish things? 3. I wont allow you to swim in the river, even if you dare do it.Dare / dared2 、做實(shí)意動(dòng)詞后加不定式。、做實(shí)意動(dòng)詞后加不定式。 eg. I have never dared to tell him about it. 9

8、Need /needed 1、情態(tài)動(dòng)詞用于否定句，疑問(wèn)句。2、實(shí)意動(dòng)詞用法似dare,用作不定式。3、need + not + have +p.p 表示“本來(lái)不需要做而做了。10Ought to 1、其否定式為、其否定式為ought not to2、ought to + have + p.p 表示本來(lái)應(yīng)該做而沒(méi)有做到。表示本來(lái)應(yīng)該做而沒(méi)有做到。Eg. You ought not to have cut away the trees around the old building.11三點(diǎn)說(shuō)明三點(diǎn)說(shuō)明1、情態(tài)動(dòng)詞 + v 表示對(duì)現(xiàn)在或?qū)?lái)現(xiàn)在或?qū)?lái)動(dòng)作的猜測(cè)。 情態(tài)動(dòng)詞 + have + p.p

9、表示對(duì)過(guò)去過(guò)去動(dòng)作的猜測(cè)。2、情態(tài)動(dòng)詞的過(guò)去式與原形相比，多點(diǎn)禮貌，少點(diǎn)冒昧， 語(yǔ)氣更為委婉。情態(tài)動(dòng)詞在一般疑問(wèn)句中的回答： Can you sing? May I come in? Must I hand in the book now? Need I finish it now?Yes, I can.No, I cant.Yes, you may.No, you mustnt.Yes, you must.No, you neednt /dont have to.Yes, you must.No, you neednt.121. He mustnt be in the classroom. ( )Cant2. You might leave the bag on the bag.