高中英語(yǔ)語(yǔ)法情態(tài)動(dòng)詞公開(kāi)課課件

Unit2GrammarandUsageModalverbsUnit2GrammarandUsageModalvJack—Ihavegoodnewsforyou!Rose—What?Jack—Theeducationaldepartmenthascarriedoutrulestoreducestudents'toomuchstudyload.Rose—Really?Ifso,Idon’thavetostayuplatetodosomuchhomeworkandmymommayallowmetoplaycomputergames.Jack—ThebestthingIthinkisthat

Ican

havemoresparetimetotakeexerciseafterclass.Rose—Sure.Bytheway,whoisyourfavoritesportsstar?Jack—Liu

Xiang,I

shouldsay.Rose—Tellmesomethingabouthim.Jack—Well,

maybeIcanshowyousomephotos.

Jack—Ihavegoodnewsforyou!一.Weusemodalverbstotalkabout:1.Ability（能力）2.Obligation（義務(wù)）3.Certainty（可能性）4.Permission（允許）一.Weusemodalverbstotalk二.Wealsousemodalverbsto:5.Makerequests（提出請(qǐng)求）6.Makesuggestions（提出建議）7.Makeoffers（提供幫助）8.Giveadvice（提出意見(jiàn)）二.Wealsousemodalverbsto:51.Ability(能力):LiuXiangcanrunthe110mhurdleracewithin13seconds.1.Ability(能力):LiuXiangcanrcan/could/beableto:can一般表示與生俱來(lái)的能力.could:泛指過(guò)去的能力Beableto通過(guò)努力做成某事Hecanspeakseveralforeignlanguages.

Shecould/wasabletoswimwellwhenshewasonlysixyearsold.can/could/beableto:can一般表示與Attention:can/beableto區(qū)別:Edisonalwayswonderedwhyhenscouldhatch(孵)chickenswhilehewasnotableto.Question:Arethetwomodalverbsinterchangeable(互換)?Ifnot,why?can表示與生俱來(lái)的能力或一種客觀可能，而beableto更加強(qiáng)調(diào)通過(guò)后天的學(xué)習(xí)和努力獲得的能力，或者在某個(gè)客觀的場(chǎng)合和背景下，能做到的事情。Attention:can/beableto區(qū)別:EdiShiDongpengmightwinamedalattheOlympicGames.Althoughthechanceofwinningamedalissmall,I’lltrymybest!2.Certainty(可能性):ShiDongpengmightwinamedalAttention:veryuncertainalmostcertainmightshouldmustmaycouldoughttowill1.He_____beathome.2.He_____beathome,forhejustcalledmefromhishome15secondsago.A.mayB.mightC.must

A.mayB.mightC.must

(can)Attention:veryuncertainalmostMay:表示實(shí)際發(fā)生的可能性，“可能”Can：一種客觀或者理論上的可能性，“有時(shí)候可能”Shemaybeathome.Itcanbeashotas38CinNYinsummer.Attention:+notMaynot:可能不Cann’t/cannot：不可能May:表示實(shí)際發(fā)生的可能性，“可能”must表示肯定的猜測(cè)，譯為“一定”，不能用于否定句或疑問(wèn)句。Thismustbeyourpen.Hemustbedoinghishomeworknow.Hemusthavearrivedalready.mustmust表示肯定的猜測(cè)，譯為“一定”，不能用于否定句或疑問(wèn)2.should表示猜測(cè)時(shí)，一般指按經(jīng)驗(yàn)或邏輯判斷，翻譯成“照說(shuō)應(yīng)該，估計(jì)，想必”

should:---WhencanIcomeforthephotos?Ineedthemtomorrowafternoon.---They_____bereadyby12:00.A.canB.shouldC.mightD.need2.should表示猜測(cè)時(shí)，一般指按經(jīng)驗(yàn)或邏輯判斷，翻譯3.may/might表示將要發(fā)生或正在發(fā)生的可能性，might比may的可能性要小一些，常用語(yǔ)陳述句中。Hemaycomeormaynotcome.I’mnotsureaboutthat.Anearthquakemightbreakoutinthatarea.may/might:3.may/might表示將要發(fā)生或正在發(fā)生的可能性，can/could:4.表達(dá)可能性時(shí)，表驚異、懷疑、不相信的態(tài)度。（主要用在否定句、疑問(wèn)句或驚嘆句中）

He’ssuchanicepersonthathe______committhecrime!

can’t你怎么會(huì)如此地粗心！

Howcanyoubesocareless!

Canthisbetrue?

can/could:4.表達(dá)可能性時(shí)，表驚異、懷疑、不相信的高中英語(yǔ)語(yǔ)法情態(tài)動(dòng)詞公開(kāi)課課件I’msotired!Ihavetodothetrainingforatleast10hoursaday!3.Obligation(義務(wù)):…yethemust

workhardtowinthegoldmedal.AlthoughLiuXiangissogiftedinhurdlerace…I’msotired!IhavetodotheAttention:advisabilitynecessityoughtto/shouldhavetomustYourmotherbringsyouupandtakesgoodcareofyou,sowhensheisold,you___lookafterherinreturn.

A.canB.mayC.havetoD.must

Attention:advisabilitynecessitMustI…?Yes,youmust.No,youneedn’t./youdon’thaveto.MustI…?Yes,youmust.4.Permission(允許):May

IeatKFCifIwinthegoldmedal?4.Permission(允許):MayIeatKFCan

youhelpmewithmytraining?Idon’tknowhowtousethisequipment!CanyouhelpmewithmytrainiShallwedothetraininginthemorning?It’stoohottotakeexerciseintheafternoon.Shallwedothetraininginthmay/might:1.表示許可。表示請(qǐng)求、允許時(shí)，might比may的語(yǔ)氣更委婉一些?！狹ight/MayIuseyourcomputer?—Yes,youcan./No,youcan’t/mustn’t.may/might:1.表示許可。表示請(qǐng)求、允許時(shí)，migmay/might:2.用于祈使句中表示祝愿。祝你成功！

Mayyousucceed.

Mayyoubehappyallyourlife.

may/might:2.用于祈使句中表示祝愿。祝你成功！Mcan/could:3.在疑問(wèn)句中，用could可表示請(qǐng)求，語(yǔ)氣較委婉?！猒___Ihavethetelevisionon?—Yes,you_____./No,you_____CouldHeasksifhe____smokehere.couldcan/maycan’t/I’mafraidnotcan/could:3.在疑問(wèn)句中，用could可表示請(qǐng)求，shall:1.Shall用于第一、第三人稱疑問(wèn)句中，表示說(shuō)話人征求對(duì)方的意見(jiàn)、向?qū)Ψ秸?qǐng)示或提供幫助。1.Shallwebeginourlesson?2.Whenshallhebeallowedtoleavehospital?

3.ShallIcarrythisbagforyou?shall:1.Shall用于第一、第三人稱疑問(wèn)句中，表示說(shuō)shall:2.Shall用于第二、第三人稱，表示說(shuō)話人給對(duì)方命令、警告、允諾或威脅。

Youshallfailifyoudon‘tworkharder.

Heshallbepunishedaccordingtotherule.

等我讀完這本書(shū)，就會(huì)給他的。HeshallhavethebookwhenIfinishit.警告威脅允諾shall:2.Shall用于第二、第三人稱，表示說(shuō)話人給對(duì)shall:3.Shall用于第三人稱，在條約，規(guī)定，法律條文中表示義務(wù)或規(guī)定，意為“應(yīng)，必須”。

Theschoolrulessaythatnochildshallbeallowedoutoftheschoolduringtheday.shall:3.Shall用于第三人稱，在條約，規(guī)定，法律條will/would:1.表示意志、愿望和決心。

Iwillneverdothatagain.

will/would:1.表示意志、愿望和決心。Iwilwill/would:2.可表示經(jīng)常性、習(xí)慣性、傾向性。翻譯為“經(jīng)常、慣于、總是”。1).Theoldman_______haveasmokeunderabigtreeeveryafternoonafterhefinishedhisfarmwork.

wouldwill/would:2.可表示經(jīng)常性、習(xí)慣性、傾向性。翻譯3).門(mén)就是打不開(kāi)!

Thedoorwon’topen.

否定式，表示不隨人愿3).門(mén)就是打不開(kāi)!Thedoorwon’tope表示規(guī)律性的：“注定會(huì)”O(jiān)ilwillfloatonthewater.Youwillregretforeverifyoulostthischance.表示規(guī)律性的：“注定會(huì)”特殊用法特殊用法can/could:4.cannever/can’t……too表示“無(wú)論怎樣…也不過(guò)分”，“越…越好”。你過(guò)馬路的時(shí)候再小心也不為過(guò)。

Youcan’tbetoocarefulwhilecrossingtheroad.

can/could:4.cannever/can’t……Attention:can/beableto區(qū)別:AbigfirebrokeoutinABChotelyesterday.Luckily,everyone__________runoutofthebuilding.wasableto2.She_____speakbothEnglishandFrench.canAttention:can/beableto區(qū)別:Abmust2.表示“堅(jiān)持”（常用于固定句型：ifyoumustdosth.如果你非得要做某事）如果你真的要走，那就悄悄離開(kāi)。Ifyoumustleave,doitquietly.must2.表示“堅(jiān)持”（常用于固定句型：ifyoumAttention:—They___bedoingtheexperimentinthelab.—Why？—Becausethelightsarestillburning.A.couldB.canC.mustD.would

Attention:—They___bedoingth7.Makingoffers(提供幫助):Don’tworry,dear,Iwillwashthemrightaway.Mom,mydirtyclotheshavebeenpiledup!Idon’thavetime……7.Makingoffers(提供幫助):Don’twwill/would:1.表示請(qǐng)求、建議等，would比will委婉客氣。sentencepattern

Wouldyouplease…Wouldyoumind…Wouldrather…Wouldyoulike…will/would:1.表示請(qǐng)求、建議等，would比wwill/would:Attention:Iwillgototheparkwithyoutomorrowifyouwilloffermelunch.

Question:Isthissentencecorrect?Why?情態(tài)動(dòng)詞表示“意愿”will/would:Attention:Iwillgo8.Givingadvice(提出意見(jiàn)):Youshouldnot/oughtnottoeatsomuchbeforerunning.Howdelicious!!!8.Givingadvice(提出意見(jiàn)):Youshoshould:1.Should表示勸告、建議、命令，其同義詞是oughtto；在疑問(wèn)句中，通常用should代替ought…to。ShouldIopenthewindow?

我們應(yīng)當(dāng)要相互學(xué)習(xí)。

Weshouldlearnfromeachother.should:1.Should表示勸告、建議、命令，其同義詞should:2.情態(tài)動(dòng)詞should用于第一人稱時(shí)可以表示說(shuō)話人的一種謙遜、客氣、委婉的語(yǔ)氣。Rose—Sure.Bytheway,whoisyouridol?Jack—LiuXiang,Ishouldsay.Ishouldadviseyounottodothatagain.

should:2.情態(tài)動(dòng)詞should用于第一人稱時(shí)可以表示3.should表示意外或驚訝常譯為“居然，竟然”。

Ican’tbelievesuchagentlemanshouldbesorudetotheold.

我不敢相信這樣一個(gè)紳士居然對(duì)老人如此無(wú)禮。should:3.should表示意外或驚訝常譯為should:TobecontinuedTobecontinued三.“情態(tài)動(dòng)詞+havedone”的用法

（1）musthavedone對(duì)過(guò)去某事的十分肯定猜測(cè)（2）may/mighthavedone對(duì)過(guò)去某事的可能性猜測(cè)（3）can’t/couldn’thavedone對(duì)過(guò)去某事的否定猜測(cè)（4）should/oughttohavedone過(guò)去應(yīng)該做而未做（5）shouldn’t/oughtn’ttohavedone

過(guò)去不應(yīng)該做而實(shí)際上做了（6）needn’thavedone本沒(méi)有必要做的事實(shí)際卻做了（7）couldhavedone

本來(lái)能夠做的（有能力做）事實(shí)際卻未做到三.“情態(tài)動(dòng)詞+havedone”的用法

（1）mustLet'shaveatry!Let'shaveatry!PracticeWithsomuchworkonhand,you____toseethegamelastnight.A.mustn’tgoB.couldhavegoneC.shouldn’tgoD.shouldn’thavegone2.Therewasplentyoftime.She____.A.mustn’thavehurriedB.couldn’thavehurriedC.mustnothurryD.needn’thavehurriedPracticeWithsomuchworkonhPractice3.–IsawMaryinthelibraryyesterday.

--You_____her.Sheisstillabroad.

A.mustn’tsee B.can’thaveseen

C.mustn’thaveseenD.couldn’tsee4.AuntMary______thetrain,otherwiseshewouldhavearrivedherebynow.

A.musthavemissed B.shouldhavemissed

C.hadmissed D.mightmissPractice3.–IsawMaryinthe四.可兼做行為動(dòng)詞的情態(tài)動(dòng)詞：need、dare

情態(tài)動(dòng)詞(+動(dòng)詞原形)行為動(dòng)詞needdare

1.無(wú)人稱和數(shù)的變化;2.尤其用于：*否定句及疑問(wèn)句中;*在if/whether之后;*或與hardly,never,noone,nobody連用;3.常以needn’t

和daren’t

的形式出現(xiàn);4.dare有其過(guò)去時(shí)dared.

多用于肯定句;(sb.)needtododaretodo(sth.)needtobedone(sth.)needdoing

四.可兼做行為動(dòng)詞的情態(tài)動(dòng)詞：need、dare情Hedaren’tspeakEnglishbeforesuchacrowd,darehe?判斷正誤:Hedaren’ttospeakEnglishbeforesuchacrowd,didhe?Thesedishesneedbecleanedcarefully.Thesedishesneedtobecleanedcarefully.Thesedishesneedcleaningcarefully.Hedaren’tspeakEnglishbefor五.表示否定的情態(tài)動(dòng)詞的用法:

部分情態(tài)動(dòng)詞的否定式是情態(tài)動(dòng)詞中的考點(diǎn)之一。

mustn’t不準(zhǔn),禁止needn’t沒(méi)必要(=don’thaveto)can’t不能;不可能maynot不可以;可能不shouldn’t不應(yīng)該(=oughtnotto)五.表示否定的情態(tài)動(dòng)詞的用法:mustn’t不準(zhǔn)

Howcanwedealwithexercisesconcerningmodalverbs?Functions&usageofmodalverbsLanguagecontext(上下文、語(yǔ)境)ThinkingFunctions&usageofmodalverbsLanguagecontext(上下文、語(yǔ)境)HowcanwedealwithexerciseHomeworkReviewtheusageofmodalverbsandfinishtheexercisepaperHomeworkReviewtheusageofmoThankyou!Thankyou!Unit2GrammarandUsageModalverbsUnit2GrammarandUsageModalvJack—Ihavegoodnewsforyou!Rose—What?Jack—Theeducationaldepartmenthascarriedoutrulestoreducestudents'toomuchstudyload.Rose—Really?Ifso,Idon’thavetostayuplatetodosomuchhomeworkandmymommayallowmetoplaycomputergames.Jack—ThebestthingIthinkisthat

Ican

havemoresparetimetotakeexerciseafterclass.Rose—Sure.Bytheway,whoisyourfavoritesportsstar?Jack—Liu

Xiang,I

shouldsay.Rose—Tellmesomethingabouthim.Jack—Well,

maybeIcanshowyousomephotos.

Jack—Ihavegoodnewsforyou!一.Weusemodalverbstotalkabout:1.Ability（能力）2.Obligation（義務(wù)）3.Certainty（可能性）4.Permission（允許）一.Weusemodalverbstotalk二.Wealsousemodalverbsto:5.Makerequests（提出請(qǐng)求）6.Makesuggestions（提出建議）7.Makeoffers（提供幫助）8.Giveadvice（提出意見(jiàn)）二.Wealsousemodalverbsto:51.Ability(能力):LiuXiangcanrunthe110mhurdleracewithin13seconds.1.Ability(能力):LiuXiangcanrcan/could/beableto:can一般表示與生俱來(lái)的能力.could:泛指過(guò)去的能力Beableto通過(guò)努力做成某事Hecanspeakseveralforeignlanguages.

Shecould/wasabletoswimwellwhenshewasonlysixyearsold.can/could/beableto:can一般表示與Attention:can/beableto區(qū)別:Edisonalwayswonderedwhyhenscouldhatch(孵)chickenswhilehewasnotableto.Question:Arethetwomodalverbsinterchangeable(互換)?Ifnot,why?can表示與生俱來(lái)的能力或一種客觀可能，而beableto更加強(qiáng)調(diào)通過(guò)后天的學(xué)習(xí)和努力獲得的能力，或者在某個(gè)客觀的場(chǎng)合和背景下，能做到的事情。Attention:can/beableto區(qū)別:EdiShiDongpengmightwinamedalattheOlympicGames.Althoughthechanceofwinningamedalissmall,I’lltrymybest!2.Certainty(可能性):ShiDongpengmightwinamedalAttention:veryuncertainalmostcertainmightshouldmustmaycouldoughttowill1.He_____beathome.2.He_____beathome,forhejustcalledmefromhishome15secondsago.A.mayB.mightC.must

A.mayB.mightC.must

(can)Attention:veryuncertainalmostMay:表示實(shí)際發(fā)生的可能性，“可能”Can：一種客觀或者理論上的可能性，“有時(shí)候可能”Shemaybeathome.Itcanbeashotas38CinNYinsummer.Attention:+notMaynot:可能不Cann’t/cannot：不可能May:表示實(shí)際發(fā)生的可能性，“可能”must表示肯定的猜測(cè)，譯為“一定”，不能用于否定句或疑問(wèn)句。Thismustbeyourpen.Hemustbedoinghishomeworknow.Hemusthavearrivedalready.mustmust表示肯定的猜測(cè)，譯為“一定”，不能用于否定句或疑問(wèn)2.should表示猜測(cè)時(shí)，一般指按經(jīng)驗(yàn)或邏輯判斷，翻譯成“照說(shuō)應(yīng)該，估計(jì)，想必”

should:---WhencanIcomeforthephotos?Ineedthemtomorrowafternoon.---They_____bereadyby12:00.A.canB.shouldC.mightD.need2.should表示猜測(cè)時(shí)，一般指按經(jīng)驗(yàn)或邏輯判斷，翻譯3.may/might表示將要發(fā)生或正在發(fā)生的可能性，might比may的可能性要小一些，常用語(yǔ)陳述句中。Hemaycomeormaynotcome.I’mnotsureaboutthat.Anearthquakemightbreakoutinthatarea.may/might:3.may/might表示將要發(fā)生或正在發(fā)生的可能性，can/could:4.表達(dá)可能性時(shí)，表驚異、懷疑、不相信的態(tài)度。（主要用在否定句、疑問(wèn)句或驚嘆句中）

He’ssuchanicepersonthathe______committhecrime!

can’t你怎么會(huì)如此地粗心！

Howcanyoubesocareless!

Canthisbetrue?

can/could:4.表達(dá)可能性時(shí)，表驚異、懷疑、不相信的高中英語(yǔ)語(yǔ)法情態(tài)動(dòng)詞公開(kāi)課課件I’msotired!Ihavetodothetrainingforatleast10hoursaday!3.Obligation(義務(wù)):…yethemust

workhardtowinthegoldmedal.AlthoughLiuXiangissogiftedinhurdlerace…I’msotired!IhavetodotheAttention:advisabilitynecessityoughtto/shouldhavetomustYourmotherbringsyouupandtakesgoodcareofyou,sowhensheisold,you___lookafterherinreturn.

A.canB.mayC.havetoD.must

Attention:advisabilitynecessitMustI…?Yes,youmust.No,youneedn’t./youdon’thaveto.MustI…?Yes,youmust.4.Permission(允許):May

IeatKFCifIwinthegoldmedal?4.Permission(允許):MayIeatKFCan

youhelpmewithmytraining?Idon’tknowhowtousethisequipment!CanyouhelpmewithmytrainiShallwedothetraininginthemorning?It’stoohottotakeexerciseintheafternoon.Shallwedothetraininginthmay/might:1.表示許可。表示請(qǐng)求、允許時(shí)，might比may的語(yǔ)氣更委婉一些?！狹ight/MayIuseyourcomputer?—Yes,youcan./No,youcan’t/mustn’t.may/might:1.表示許可。表示請(qǐng)求、允許時(shí)，migmay/might:2.用于祈使句中表示祝愿。祝你成功！

Mayyousucceed.

Mayyoubehappyallyourlife.

may/might:2.用于祈使句中表示祝愿。祝你成功！Mcan/could:3.在疑問(wèn)句中，用could可表示請(qǐng)求，語(yǔ)氣較委婉?！猒___Ihavethetelevisionon?—Yes,you_____./No,you_____CouldHeasksifhe____smokehere.couldcan/maycan’t/I’mafraidnotcan/could:3.在疑問(wèn)句中，用could可表示請(qǐng)求，shall:1.Shall用于第一、第三人稱疑問(wèn)句中，表示說(shuō)話人征求對(duì)方的意見(jiàn)、向?qū)Ψ秸?qǐng)示或提供幫助。1.Shallwebeginourlesson?2.Whenshallhebeallowedtoleavehospital?

3.ShallIcarrythisbagforyou?shall:1.Shall用于第一、第三人稱疑問(wèn)句中，表示說(shuō)shall:2.Shall用于第二、第三人稱，表示說(shuō)話人給對(duì)方命令、警告、允諾或威脅。

Youshallfailifyoudon‘tworkharder.

Heshallbepunishedaccordingtotherule.

等我讀完這本書(shū)，就會(huì)給他的。HeshallhavethebookwhenIfinishit.警告威脅允諾shall:2.Shall用于第二、第三人稱，表示說(shuō)話人給對(duì)shall:3.Shall用于第三人稱，在條約，規(guī)定，法律條文中表示義務(wù)或規(guī)定，意為“應(yīng)，必須”。

Theschoolrulessaythatnochildshallbeallowedoutoftheschoolduringtheday.shall:3.Shall用于第三人稱，在條約，規(guī)定，法律條will/would:1.表示意志、愿望和決心。

Iwillneverdothatagain.

will/would:1.表示意志、愿望和決心。Iwilwill/would:2.可表示經(jīng)常性、習(xí)慣性、傾向性。翻譯為“經(jīng)常、慣于、總是”。1).Theoldman_______haveasmokeunderabigtreeeveryafternoonafterhefinishedhisfarmwork.

wouldwill/would:2.可表示經(jīng)常性、習(xí)慣性、傾向性。翻譯3).門(mén)就是打不開(kāi)!

Thedoorwon’topen.

否定式，表示不隨人愿3).門(mén)就是打不開(kāi)!Thedoorwon’tope表示規(guī)律性的：“注定會(huì)”O(jiān)ilwillfloatonthewater.Youwillregretforeverifyoulostthischance.表示規(guī)律性的：“注定會(huì)”特殊用法特殊用法can/could:4.cannever/can’t……too表示“無(wú)論怎樣…也不過(guò)分”，“越…越好”。你過(guò)馬路的時(shí)候再小心也不為過(guò)。

Youcan’tbetoocarefulwhilecrossingtheroad.

can/could:4.cannever/can’t……Attention:can/beableto區(qū)別:AbigfirebrokeoutinABChotelyesterday.Luckily,everyone__________runoutofthebuilding.wasableto2.She_____speakbothEnglishandFrench.canAttention:can/beableto區(qū)別:Abmust2.表示“堅(jiān)持”（常用于固定句型：ifyoumustdosth.如果你非得要做某事）如果你真的要走，那就悄悄離開(kāi)。Ifyoumustleave,doitquietly.must2.表示“堅(jiān)持”（常用于固定句型：ifyoumAttention:—They___bedoingtheexperimentinthelab.—Why？—Becausethelightsarestillburning.A.couldB.canC.mustD.would

Attention:—They___bedoingth7.Makingoffers(提供幫助):Don’tworry,dear,Iwillwashthemrightaway.Mom,mydirtyclotheshavebeenpiledup!Idon’thavetime……7.Makingoffers(提供幫助):Don’twwill/would:1.表示請(qǐng)求、建議等，would比will委婉客氣。sentencepattern

Wouldyouplease…Wouldyoumind…Wouldrather…Wouldyoulike…will/would:1.表示請(qǐng)求、建議等，would比wwill/would:Attention:Iwillgototheparkwithyoutomorrowifyouwilloffermelunch.

Question:Isthissentencecorrect?Why?情態(tài)動(dòng)詞表示“意愿”will/would:Attention:Iwillgo8.Givingadvice(提出意見(jiàn)):Youshouldnot/oughtnottoeatsomuchbeforerunning.Howdelicious!!!8.Givingadvice(提出意見(jiàn)):Youshoshould:1.Should表示勸告、建議、命令，其同義詞是oughtto；在疑問(wèn)句中，通常用should代替ought…to。ShouldIopenthewindow?

我們應(yīng)當(dāng)要相互學(xué)習(xí)。

Weshouldlearnfromeachother.should:1.Should表示勸告、建議、命令，其同義詞should:2.情態(tài)動(dòng)詞should用于第一人稱時(shí)可以表示說(shuō)話人的一種謙遜、客氣、委婉的語(yǔ)氣。Rose—Sure.Bytheway,whoisyouridol?Jack—LiuXiang,Ishouldsay.Ishouldadviseyounottodothatagain.

should:2.情態(tài)動(dòng)詞should用于第一人稱時(shí)可以表示3.should表示意外或驚訝常譯為“居然，竟然”。

Ican’tbelievesuchagentlemanshouldbesorudetotheold.

我不敢相信這樣一個(gè)紳士居然對(duì)老人如此無(wú)禮。should:3.should表示意外或驚訝常譯為should:TobecontinuedTobecontinued三.“情態(tài)動(dòng)詞+havedone”的用法

（1）musthavedone對(duì)過(guò)去某事的十分肯定猜測(cè)（2）may/mighthavedone對(duì)過(guò)去某事的可能性猜測(cè)（3）can’t/couldn’thavedone對(duì)過(guò)去某事的否定猜測(cè)（4）should/oughttohavedone過(guò)去應(yīng)該做而未做（5）shouldn’t/oughtn’ttohavedone

過(guò)去不應(yīng)該做而實(shí)際上做了（6）needn’thavedone本沒(méi)有必要做的事實(shí)際卻做了（7）couldhavedone

本來(lái)能夠做的（有能力做）事實(shí)際卻未做到三.“情態(tài)動(dòng)詞+havedone”的用法

（1）mustLet'shaveatr