人教版高一英語必修三Uint-2-The-correct-usage-of-model-verbs課件

Unit2Thecorrectusageofmodelverbs.情態(tài)動(dòng)詞的用法Unit2Thecorrectusageofmod1目錄Warmingup12Presentation3Summary4Practice目錄Warmingup12Presentation3Su21Warmingup

1Warmingup3Foodisthefirstnecessityofthepeople.

民以食為天。

WarmingupWhatshouldweeattokeephealthy?Foodisthefirstnecessityof4WarmingupWeoughtto

keeptheairfreshallthetime.We’dbetterdrinkmorewatereveryday.Ithinkweshouldeathealthyfoodeveryday.WarmingupWeoughttokeepth5

meatvegetablefruitsnacks（零食小吃）

staplefood(主食)Whatkindoffoodmustweeattobestrongandhealthy?Warmingupdiet日常飲食meatWhatkindoffoodmustwe6muttonmuttonkebabsWarmingupmeatmuttonmuttonkebabsWarmingupm7carrotcabbagecucumberpeaWarminguptomatovegetablescarrotcabbagecucumberpeaWarm8lemonwatermelongrapescherryWarmingupFruit

lemonwatermelongrapescherryWar9potatochipschocolateIcecreamWarmingupsnackspotatochipschocolateIcecream10ricedumplingsnoodlesWarmingupstaplefood主食ricedumplingsnoodlesWarmingup11WarmingupMustIeatalotofmeattokeephealthy?No,youneedn’t/youdon’thaveto.WarmingupMustIeatalotof122Presentation2Presentation13Weoughtto

keeptheairfreshallthetime.We’dbetter

drinkmorewatereveryday.weshould

eathealthyfoodeveryday.Presentation情態(tài)動(dòng)詞Weoughttokeeptheairfres14shouldoughttohadbettermusthavetoneed情態(tài)動(dòng)詞是一種本身有一定的詞義，表示說話人的情緒，態(tài)度或語氣的動(dòng)詞。不能單獨(dú)做謂語，只能和其他動(dòng)詞原形構(gòu)成謂語。

表示“需要，可以，必須，應(yīng)當(dāng)”。Presentationshouldoughtto15表示否定的情態(tài)動(dòng)詞的用法:mustn’tneedn’tshouldn’tcan’t不準(zhǔn),禁止沒必要(=don’thaveto)不應(yīng)該(=oughtnotto)不能，不可能Presentation表示否定的情態(tài)動(dòng)詞的用法:mustn’t不準(zhǔn),禁止沒必要16oughtto

和shouldoughtto和should都為應(yīng)該的意思，表示勸告或責(zé)任，后者的語氣更強(qiáng)一些。口語中也常用hadbetter，表示“最好（做或不做某事）。oughtto的語氣稍重一些。should表示主語的義務(wù)或責(zé)任

.或指明一個(gè)正確、明確的動(dòng)作。Youshould/oughttodoasyouarerequired.Presentationoughtto和shouldoughtto和sho17Youshouldlookafteryoursister.Yououghttofollowyourteacher'sadvice.Theyshouldn'tbe

allowedparkinghere;thestreetistoonew.Presentation多數(shù)情況下，oughtto可與should互換使用。oughttodo反意疑問句用shouldn't替代。Youshouldlookafteryoursis18must

和haveto

must表示主觀的義務(wù)和必要，主要用于肯定句和疑問句中，意思是“必須...，得...;由must引起的疑問句，肯定回答要用must或haveto,否定回答用needn't

和don'thaveto,意思是“不必”，must的否定形式mustn't

表示禁止，意思是不能,不許Presentationmust和havetomust表示主觀的義務(wù)和必要，主19must或haveto表示“必須”,nothaveto和needn't表示“不必要”。“過去不必要”用didn'thaveto表示。

Presentationmust

和haveto

MustIeatalotofmeattokeephealthy?No,youneedn’t/youdon’thaveto.haveto的否定形式must的否定形式must或haveto表示“必須”,nothave20must還可以表示推測，意思是'一定，想必“，即最有可能，但卻仍是一種主觀推測，而不是客觀的事實(shí)，其否定式用“can't”.Youmustbeveryhungryafteryoulongwalk.Thephoneisringingbutthereisnoanswer.Shecan'tbeathome.Presentationmust還可以表示推測，意思是'一定，想必“，即最有可能，但21mustn't表示“不許，一定不要”語氣很強(qiáng)。Youmustn'tsmokehere.can/can't可以表示能力，也可以表示可能。表能力：Hecan(not)speakFrench.表可能時(shí)can常用于疑問句或者否定句中Canthenewsbetrue?Presentationmustn't表示“不許，一定不要”語氣很強(qiáng)。Youmu22must表示主觀需要，而haveto表示一種客觀需要，意思是“不得不”Ihavetoattendanimportantmeetingthisafternoon.haveto的否定形式是don'thaveto.Theydon'thavetobuyacomputeratpresent.Presentationneedn't.must表示主觀需要，而haveto表示一種客觀需要，231.Itmusthaverainedlastnight,forthegroundiswet.昨天一定下雨了，因?yàn)榈孛孢€是濕的。2.Idon'tknow.Hemayhavegotlost.我不知道，他可能迷路了。A.表示對過去發(fā)生的事情進(jìn)行推測。情態(tài)動(dòng)詞+havedone1.musthavedone一定做了...2.can't/couldn'thavedone不可能做了...3.may/mighthavedone可能已經(jīng)做過某事1.Itmusthaverainedlastnig241.Ineedn'thavegotupsoearly,todayisSunday.我本不必起這么早，今天是星期日。2.Look,Tomiscrying.Ishouldn'thavebeensoharshonhim.看，湯姆哭了，我本來不應(yīng)該對他如此嚴(yán)厲。B.

表示本應(yīng)該/不必做...卻...1.oughtto/shouldhavedone本該做卻沒做...2.oughtn'tto/shouldn'thavedone本來不應(yīng)該做卻做了...3.needn'thavedone本不必做卻做了...4.couldn'thavedone本來能夠做某事而沒有做...1.Ineedn'thavegotupsoear253Summary3Summary26Summary1.情態(tài)動(dòng)詞的定義2.oughtto和should的用法3.must和haveto的用法4情態(tài)動(dòng)詞+havedoneSummary1.情態(tài)動(dòng)詞的定義274Practice4Practice281.--Willyoustayforlunch?--Sorry,_____.Mybrotheriscomingtoseeme.A.Imustn’tB.Ican’tC.Ineedn’tD.Iwon’t2.--MayIpickaflowerinthegarden?--________.A.No,youneedn’tB.Not,please.C.No,youmustn’tD.No,youwon’t.B

C

Practice1.--Willyoustayforlunch?B293.You______returnthebooknow.Youcankeepittillnextweekifyoulike.A.can’tB.mustn’tC.needn’tD.maynot4.John,you__playwiththeknife,you__hurtyourself.A.won’t;can’tB.mustn’t;mayC.shouldn’t;mustD.can’t;shouldn’tC

B

Practice3.You______returnthebook30ThanksforwatchingThanksforwatching31Unit2Thecorrectusageofmodelverbs.情態(tài)動(dòng)詞的用法Unit2Thecorrectusageofmod32目錄Warmingup12Presentation3Summary4Practice目錄Warmingup12Presentation3Su331Warmingup

1Warmingup34Foodisthefirstnecessityofthepeople.

民以食為天。

WarmingupWhatshouldweeattokeephealthy?Foodisthefirstnecessityof35WarmingupWeoughtto

keeptheairfreshallthetime.We’dbetterdrinkmorewatereveryday.Ithinkweshouldeathealthyfoodeveryday.WarmingupWeoughttokeepth36

meatvegetablefruitsnacks（零食小吃）

staplefood(主食)Whatkindoffoodmustweeattobestrongandhealthy?Warmingupdiet日常飲食meatWhatkindoffoodmustwe37muttonmuttonkebabsWarmingupmeatmuttonmuttonkebabsWarmingupm38carrotcabbagecucumberpeaWarminguptomatovegetablescarrotcabbagecucumberpeaWarm39lemonwatermelongrapescherryWarmingupFruit

lemonwatermelongrapescherryWar40potatochipschocolateIcecreamWarmingupsnackspotatochipschocolateIcecream41ricedumplingsnoodlesWarmingupstaplefood主食ricedumplingsnoodlesWarmingup42WarmingupMustIeatalotofmeattokeephealthy?No,youneedn’t/youdon’thaveto.WarmingupMustIeatalotof432Presentation2Presentation44Weoughtto

keeptheairfreshallthetime.We’dbetter

drinkmorewatereveryday.weshould

eathealthyfoodeveryday.Presentation情態(tài)動(dòng)詞Weoughttokeeptheairfres45shouldoughttohadbettermusthavetoneed情態(tài)動(dòng)詞是一種本身有一定的詞義，表示說話人的情緒，態(tài)度或語氣的動(dòng)詞。不能單獨(dú)做謂語，只能和其他動(dòng)詞原形構(gòu)成謂語。

表示“需要，可以，必須，應(yīng)當(dāng)”。Presentationshouldoughtto46表示否定的情態(tài)動(dòng)詞的用法:mustn’tneedn’tshouldn’tcan’t不準(zhǔn),禁止沒必要(=don’thaveto)不應(yīng)該(=oughtnotto)不能，不可能Presentation表示否定的情態(tài)動(dòng)詞的用法:mustn’t不準(zhǔn),禁止沒必要47oughtto

和shouldoughtto和should都為應(yīng)該的意思，表示勸告或責(zé)任，后者的語氣更強(qiáng)一些?？谡Z中也常用hadbetter，表示“最好（做或不做某事）。oughtto的語氣稍重一些。should表示主語的義務(wù)或責(zé)任

.或指明一個(gè)正確、明確的動(dòng)作。Youshould/oughttodoasyouarerequired.Presentationoughtto和shouldoughtto和sho48Youshouldlookafteryoursister.Yououghttofollowyourteacher'sadvice.Theyshouldn'tbe

allowedparkinghere;thestreetistoonew.Presentation多數(shù)情況下，oughtto可與should互換使用。oughttodo反意疑問句用shouldn't替代。Youshouldlookafteryoursis49must

和haveto

must表示主觀的義務(wù)和必要，主要用于肯定句和疑問句中，意思是“必須...，得...;由must引起的疑問句，肯定回答要用must或haveto,否定回答用needn't

和don'thaveto,意思是“不必”，must的否定形式mustn't

表示禁止，意思是不能,不許Presentationmust和havetomust表示主觀的義務(wù)和必要，主50must或haveto表示“必須”,nothaveto和needn't表示“不必要”。“過去不必要”用didn'thaveto表示。

Presentationmust

和haveto

MustIeatalotofmeattokeephealthy?No,youneedn’t/youdon’thaveto.haveto的否定形式must的否定形式must或haveto表示“必須”,nothave51must還可以表示推測，意思是'一定，想必“，即最有可能，但卻仍是一種主觀推測，而不是客觀的事實(shí)，其否定式用“can't”.Youmustbeveryhungryafteryoulongwalk.Thephoneisringingbutthereisnoanswer.Shecan'tbeathome.Presentationmust還可以表示推測，意思是'一定，想必“，即最有可能，但52mustn't表示“不許，一定不要”語氣很強(qiáng)。Youmustn'tsmokehere.can/can't可以表示能力，也可以表示可能。表能力：Hecan(not)speakFrench.表可能時(shí)can常用于疑問句或者否定句中Canthenewsbetrue?Presentationmustn't表示“不許，一定不要”語氣很強(qiáng)。Youmu53must表示主觀需要，而haveto表示一種客觀需要，意思是“不得不”Ihavetoattendanimportantmeetingthisafternoon.haveto的否定形式是don'thaveto.Theydon'thavetobuyacomputeratpresent.Presentationneedn't.must表示主觀需要，而haveto表示一種客觀需要，541.Itmusthaverainedlastnight,forthegroundiswet.昨天一定下雨了，因?yàn)榈孛孢€是濕的。2.Idon'tknow.Hemayhavegotlost.我不知道，他可能迷路了。A.表示對過去發(fā)生的事情進(jìn)行推測。情態(tài)動(dòng)詞+havedone1.musthavedone一定做了...2.can't/couldn'thavedone不可能做了...3.may/mighthavedone可能已經(jīng)做過某事1.Itmusthaverainedlastnig551.Ineedn'thavegotupsoearly,todayisSunday.我本不必起這么早，今天是星期日。2.Look,Tomiscrying.Ishouldn'thavebeensoharshonhim.看，湯姆哭了，我本來不應(yīng)該對他如此嚴(yán)厲。B.

表示本應(yīng)該/不必做...卻...1.oughtto/shouldhavedone本該做卻沒做...2.oughtn't