初中英语情态动词课件

情态动词目录CONTENTS一、情态动词的那些事儿二、情态动词的那些一般用法三、情态动词的那些推测用法四、情态动词的那些特殊用法情态动词的那些事儿01PARTONE情态动词的那些词儿may mightcan couldwill wouldshall shouldmust haveto need…情态动词的那些特点CaiXukuncansingsongswell.FanChengchengcansingsongswelltoo.ButDongYanleican’tsingsongswell.3.

有助动词的作用1.不能单独作谓语，必须与动词原形连用2.没有人称和数的变化情态动词里的那些一般用法02PARTTWOmay/mightcan/couldwill/wouldshall/shouldmust/haveto/needMayIgototheBall?Yes,youmay.Yes,youcan.No,youmustn’t.No,youcan’t.may might意义：请求获得对方的允许，“可以”might(委婉语气)否定--mustn’t/can’t肯定--may/canmust haveto need

否定mustn’t,“禁止”否定回答用needn’tNo,youneedn’t.No,youdon’thaveto.MustIdothehousework?Yes,youmust.must haveto need

3.must与haveto的区别ImustgototheBall.ButIhavetofinishthehousework,beforeIgototheBall.can could

1.表具备某种能力：能，能够；could(过去的能力)Cinderellacoulddancewellinthepast.Cinderellacandancewellnow.can could

2.表请求和允许：“可以”=may；could(委婉语气)

回答：肯定--can

否定--can’t

CouldIdancewithyou?Yes,youcan.知识要点总结情态动词本意may,mightcan,couldmust允许能力，允许必须否定含义不能不可以不可以禁止回答

may/canmustn’t/can’t

can

can’t

must

needn’t1.--MusthesingthesonginEnglish?--No,he_____.A.needn’tB.can’tC.mustn’tPractice

makes

perfect2.--Mum,_____Ivisitthesciencemuseumtomorrow?--I’mafraidyou_____.ItisclosedonMonday.A.must;mustn’tB.may;can’tC.should;can’tPractice

makes

perfect3.--Mum,_____Iplayfootballthisafternoon?--Sure,butyou_____finishyourhomeworkfirst.may,couldcan,mustcan,mustn’tmay,can’tPractice

makes

perfectwill would

用于第二人称的疑问句中，表“请求、建议”等;would(委婉)用于表示意志，意愿或决心，意为“会，愿意”。will指现在，而would指过去。Willyoumarryme?Yes,Iwill.Iwillloveyouforever.shall should

1.征求对方意见，用于第一，第三人称疑问句中shallShallweholdourweddingthisSunday?Ok.shall should

意为：应该。表达义务，职责（说话人的观点）shouldAshuman,weshould

bekindtoothers.1.

--Manypeopleplaywithmobilephonesalldayinsteadofreadingbooks.--That’stoobad.

Everyone_______beabooklover.

ReadingismoreenjoyableA.mayB.shouldC.wouldPractice

makes

perfectLet’s

take

a

break!情态动词那些推测用法03PARTTHEREmay(might)can(could)mustcan/couldmay/mightmust用于肯定句

“可能”might(可能性更小)0％50％100％<<用于疑问句，否定句“不可能，可能吗”could(可能性较小；可用于肯定句，疑问句，否定句)用在肯定句中“一定”GuessinggameWhoisthis?It__________beFanBingbing.It__________beGuojingming.It__________beWangBaoqiang.It’sahe.It’snotverytall.HeplayedasTangReninthemovieDetectiveChinatown.mustmay/mightcan’t1.

Thegirlintheclassroom______beSarah.Shehasgonetothelibrary.A.mayB.mustC.can’tD.needn’tPractice

makes

perfect2．--Whosebookisthis?--Iamnotsure.It_____beMary’s.A.shallB.mustC.mightD.canPractice

makes

perfect3.--Listen.Ithinkit_____beMr.Whitesingingintheoffice.--No.It_____behim.HeleftforLondonjustnow.A.must,mustn’tB.may,mustn’tC.must,can’tD.can,canPractice

makes

perfect4.

--He______beintheclassroom,

Ithink.--No,

he____beintheclassroom.

Isawhimgohomeaminuteago.A.can；maynotB.must；maynotC.may；mustn’tD.may；can'tPractice

makes

perfect情态动词的那些特殊用法04PARTFOURusedtodobe/getusedtodoinghadbetterdo情态动词的那些特殊用法意义usedtodobe/getusedtodoing过去常常做某事习惯于做某事Obamausedtoeathamburger,butnowheisusedtoeatingspicybar.情态动词的那些特殊用法

hadbetterhadbetterdo

最好做……hadbetternotdo最好不要做……You’dbetterworkhardinmiddleschool.

表达“建议”和“忠告”，hadbetterdo“为好”，建议某人“最好不……”，要用hadbetternotdo。1.

Mygrandfather_____liveinthecountryside，butnowhe______livinginthecity.A.usedto;

usedtoB.gotusedto;

getsusedtoC.usedto;

getsusedtoPractice

makes

perfect2.

--You'dbetter

toomuchtimechattingonline．--OK．Iwon't．A.don'tspendB.nottospendC.tonotspendD.notspendPractice

makes

perfect1.--Idon’tcarewhatpeoplethink?--Well,you_____.You’renotaloneinthisworld.A.canB.mayC.shouldD.will真题演练2.--MayItakethedogwithme,sir?--_____.Petsarenotallowedtoenterthehall.A.Yes,youmay.B.No,youmustn’t.C.Yes,youcan.D.No,youneedn’t.真题演练3.--WillJimflytoTaiwanforaholiday?--He_____try.Infact,itdependsonhowmuchthejourneycosts.A.mayB.hastoC.needD.must真题演练