资源描述：
《情态动词基本用法及练习.ppt》由会员上传分享，免费在线阅读，更多相关内容在PPT专区-天天文库。
1、can/could（beableto）may/mightmust/havetoneedwill/wouldshall/shouldhadbetter特征：1.只有情态意义，情态动词+do；2.没有人称和数的变化；3.直接构成否定句和一般疑问句；4.只有现在式和过去式情态动词基本用法can&could&beabletoA.能力：Bobcanplaythepianoverywell.（Bobisabletoplaythepianoverywell)Icouldrideabikeattheageoften.(Iwasabletori
2、deabikeattheageoften)B.许可：---Can/CouldIborrowyourbike?---Certainly./Yes,youcan.---No,youcan’t.may&mightA.许可：---MayIsithere?---Yes,youmay/youcan.(Ofcourse)---No,youcan’t/mustn’t.B.可能性：Hemay/mightcometomorrow.must必须，应该（主观愿望）Wemuststudyhard.B.禁止：（否定式）Youmustn’tplayinth
3、estreet.C.疑问句及回答Mustwefinishtheworkbefore5:00?Yes,youmust./No,youneedn’t/don’thaveto.haveto/hasto必须；不得不(客观要求）A.Hehastogetupearlyeverydaybecausehishomeisfarfromhisschool.B.---DoyouhavetolearnEnglish?---Yes,Ido./No,Idon’t.need(情态动词;行为动词；名词）A.情态动词(疑问句/否定句):NeedIwaterth
4、eflowers?Yes,youmust./No,youneedn’t.B.行为动词needsth.tododoing(被动含义）Theroomneedscleaning.=Theroomneedstobecleaned.C.名词：Thereisnoneedforustodotheworknow.will&wouldA.Iwillhelphimifheasksme.B.--Pleaselookafteryourself.–Iwill.--Don’tbelateagain.–Sorry,Iwon’t.C.--Will/Would
5、youpleasedo…?--Ok,Iwill./Sorry,Ican’t.D.---Will/Wouldyoupleasenotdo…?---Sorry,Iwon’tdothatagain.E.--Will/Would/Doyouminddoing…?---Ofcoursenot./Certainlynot./No,Idon’t.---I’msorry,but…/I’mafraidIdo.F.Wouldyouliketodo…?Sure,I’dliketo.shall&shouldA.提建议Shallwevisitthezo
6、otomorrow?Let’sgohiking,shallwe?B.应该；应当：Weshouldlearnfromeachother.Youshouldn’tbotherhimnow.hadbetter：最好（提建议）A.Shehadbetterfinishtheworknow.B.Youhadbetternotbelateforschool.dare:敢，敢于(情态动词&实义动词）A.Nobodydaredaskhimabouthispast.B.Iwonderhowhedarestosaysuchthings.情态动词表猜
7、测的用法：A.Itmustbetrue.(反意疑问句）B.Canitbetrue?Whocanitbe?Itcan’tbetrue.C.Itmay/might/couldbetrue.=Maybeitistrue.对进行动作的猜测：must/maybedoing对过去情况的推测:must/mayhavedoneE.情态动词在therebe句型中的运用：Theremay/must/usedtobesomeonelivingintheroom.情态动词的被动语态：情态动词+bedoneThemistakesmustbecorrec
8、tedintime.情态动词的系表结构：情态动词+be+adj./n….ThespellingmustbecorrectbecauseI’velookeditupinthedictionary.Weshouldbestrictwithourselves.Shemustbeat
