小学情态动词用法.ppt

动词 表示动作与状态的词主要考点动词分类时态 1 whendidyouruncle inshanghai thedaybeforeyesterdayAarriveBgetCreach2 Asweknow somepeoplearegoodat butbadatgivebackAlendingBkeepingCborrowingDusing3 Thesmallchildwasnotoldenoughto himselfAhaveBwearCdressDputon5 MybrotherandIare TV AwatchBlookCreadDsee6 IaskDannyto memybook buthebroughmehisbookAtakeBfetchCcarryDmatch Tryandtry 7 theradio thattherewillbeanotherheavyraininGuangdong Toobad IthasrainedforthewholeweekAtellsBtalksCsaysDspeaks8 Itisniceofyouto somuchtimeshowingmearoundyourschoolAspendBcostCpayDtake Tryandtry 一 情态动词 can couldmusthavetoshouldwill would may 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 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Hecan tbeinclassroom 3 可以CanIhelpyou 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can t回答could开头的一般疑问句以could和couldn t回答 2 must 1 必须应该 2 表推测 一定 3 否定句中 mustn t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needn t don thaveto 不需要 不必 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 1 MayIstopmycarhere No you A can tB mustn tC needn tD don thaveto2 Mustwecleanthehousenow No you A needn tB maynotC mustn tD can t4 You returnthebooknow Youcankeepitnextweekifyoulike A can tB mustn tC needn tD maynot5 Johnny you playwiththeknife you hurtyourself A won t can tB mustn t mayC shouldn t mustD can t shouldn t6 Wouldyougooutforawalkwithme No I Mygirlfriendiscoming A wouldn tB shallnotC won tD shouldn t tryandtry 7 youbehappy A MayB CanC MustD Would8 CouldIborrowyourdictionary Yes ofcourseyou A mightB willC canD should