Unit2 Healthy eating-Grammar课件(新人教版)文库.ppt

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1、Period4GrammarModalVerbsUnit2HealthyEatingThefirstwealthishealth.健康是人生第一财富。Alightheartliveslong.豁达者长寿。Earlytobedandearlytorisemakesamanhealthy,wealthyandwise.早睡早起会使人健康、富有和聪明。Withouthealthnopleasurecanbetastedbyman.没有健康就没有乐趣。Goodhealthisoverwealth.健康是最大的财富。ProverbsWhatshould/shouldn’twedotokeep

2、healthy?Goodhealthisoverwealth.Ifyou’dliketogiveadviceoropinions,youcanuseshould/oughtto/hadbetterdoWhatoughtwetodotokeephealthy?Goodhabitscanhelpustokeephealthyandbadonescancausediseases.ThereisaseriousdiseasecalledH1N1fluthesedays.Itspreadseasilyamongpeopleinspringandautumn.Thefluisaseriousd

3、isease,butwedon’thavetobeafraidofit.Wecandosomethingtopreventit.Buthow?Weoughttokeeptheairfreshallthetime.Weoughttokeepawayfromcrowdedplaces.We’dbetterdrinkmorewatereveryday.Youshouldgotoschoolrightaway.It’seighto’clocknow.Heshouldbeatwork.Itseemssounfairthisshouldhappentome.Youshouldhaveremin

4、dedmeofthemeeting.Whatshouldwedonow?sumup义务表惊讶：竟然推测用于第一人称疑问句，询问对方的意愿表责备，谴责Whatkindoffoodmustweeattobestrong?Goodhealthisoverwealth.must/havetoMustIfinishthetaskrightnow?Yes,youmust/youhaveto.No,youneedn’t/youdon’thaveto.ShecalledmeyesterdayeveningbutIdidn’thearit.I_________________(be)asleep.m

5、usthavebeen1.--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.3.You______returnthebooknow.Youcankeepittillnextweekifyoulike.A.can’tB.mustn’tC.needn

6、’tD.maynot4.John,you__playwiththeknife,you__hurtyourself.A.won’t;can’tB.mustn’t;mayC.shouldn’t;mustD.can’t;shouldn’tCBBCmustn’tneedn’tshouldn’tcan’t表示否定的情态动词的用法:不准,禁止没必要(=don’thaveto)不应该(=oughtnotto)不能，不可能Couldyouusethemtomakesentences?Whatmodalverbshaveyoulearned?can/couldmay/mightwill/woulds

7、hall/shouldhadbettermusthavetoneedoughttodare*can/could只能表示现在或过去的能力*beableto能用于各种时态相当于managetodosth./succeedindoingsth.1.表示“能力”的情态动词的用法can,could（beableto）He___________gotothepartyyesterdayeveninginspiteoftheheavyrain.2.Althoughhe_____sw