小学情态动词用法PPT课件

-,1,动词,表示动作与状态的词主要考点动词分类时态,-,2,-,3,1.-whendidyouruncle_inshanghai-thedaybeforeyesterdayAarriveBgetCreach2.Asweknow,somepeoplearegoodat_butbadatgivebackAlendingBkeepingCborrowingDusing3.Thesmallchildwasnotoldenoughto_himselfAhaveBwearCdressDputon5.MybrotherandIare_TV.AwatchBlookCreadDsee6.IaskDannyto_memybook,buthebroughmehisbookAtakeBfetchCcarryDmatch,Tryandtry,-,4,7.-theradio_thattherewillbeanotherheavyraininGuangdong._Toobad.IthasrainedforthewholeweekAtellsBtalksCsaysDspeaks8.Itisniceofyouto_somuchtimeshowingmearoundyourschoolAspendBcostCpayDtake,Tryandtry,-,5,一、情态动词,can,couldmusthavetoshouldwill(would)may,-,6,二、特征,1.有一定词义，但不能单独作谓语，必须和行为动词或系动词连用，构成谓语。2.无人称和数的变化（haveto例外：用于第三人称单数时用hasto）Hehastostayhere.3.后面接动词原形Sheshouldstayathome.,-,7,-,8,三、用法,1.can,could(1)表示能力，“能，会”Canyouplaybasketball?(2)表示怀疑、猜测，常用于否定句和疑问句中Hecantbeinclassroom.（3）可以CanIhelpyou?,-,9,(4)could是can的过去式，可以表示过去的能力IcouldswimwhenIwassevenyearsold.(5)can开头的一般疑问句以can和cant回答could开头的一般疑问句以could和couldnt回答,-,10,2.must(1)“必须应该”(2)表推测“一定”(3)否定句中，mustnt表示禁止，“不允许”Must开头的疑问句，肯定回答用must，否定回答用neednt（=donthaveto）“不需要，不必”,-,11,3.haveto“haveto+动词原形”：不得不做某事注意：haveto用于第三人称单数时用hasto,-,12,1MayIstopmycarhere?No,you_.A.cantB.mustntC.needntD.donthaveto2.Mustwecleanthehousenow?No,you_.A.needntB.maynotC.mustntD.cant4.You_returnthebooknow.Youcankeepitnextweekifyoulike.A.cantB.mustntC.needntD.maynot5.Johnny,you_playwiththeknife,you_hurtyourself.A.wont.cantB.mustnt.mayC.shouldnt,mustD.cant.shouldnt6.-Wouldyougooutforawalkwithme?-No,I_.Mygirlfriendiscoming.A.wouldntB.shallnotC.wontD.shouldnt,tryandtry,-,13,7._youbehappy!A.MayB.CanC.M