單元語法沙龍Unit8ItmustbelongtoCarla.寫出下列句子中的情態(tài)動(dòng)詞1.Hemustbedoinghisexercisesintheclassroom.________2.Thesestudentsmayhaveseenthefilmbefore.

________3.Shemightcomethisafternoon.

________4.Hecan’thavegonetoShanghai,forIsawhimaminuteago.

_______5.Excuseme,couldyoutellmethewaytothebusstation?

________mustmaymightcan’tcould情態(tài)動(dòng)詞表示推測的意義和用法很多情態(tài)動(dòng)詞都可以表示推測，如：must,can,can’t,may,maynot,might,mightnot,could,couldn’t等。考點(diǎn)1情態(tài)動(dòng)詞的意義和用法情態(tài)動(dòng)詞含義用法must一定表示有把握的肯定推測can,may,might,could也許；可能表示沒有把握的肯定推測can’t,couldn’t不可能表示有把握的否定推測maynot,mightnot,可能不表示不太有把握的否定推測·Thelightison.Hemustbeathomenow.燈亮著。他現(xiàn)在一定在家?！hisvolleyballmight/couldbeTom’s.Helikesplayingvolleyball.這個(gè)排球可能是湯姆的。他喜歡打排球?！hatcan’tbeMary.She’sinNewYork.那不可能是瑪麗。她在紐約。·Itmaynotberight,butthat’swhatIthink.它可能不對(duì)，但是那是我的想法?！ぁ狢anthenewsbetrue?這個(gè)消息可能是真的嗎？—No,itcan’tbetrue.不。它不可能是真的。(1)情態(tài)動(dòng)詞表示推測時(shí)，無時(shí)態(tài)區(qū)別，只有語氣差別。表示肯定推測的情態(tài)動(dòng)詞的語氣強(qiáng)弱(表示可能性的大小程度)：might＜may＜could＜can＜must(2)must在表示肯定推測時(shí)，意為“一定”，但是其相對(duì)的否定推測要用can’t，而不用mustn’t，因?yàn)閙ustn’t表示“禁止”?！emustbeathome.他一定在家。→Hecan’tbeathome.他不可能在家?？键c(diǎn)2不同時(shí)態(tài)中表推測的句子結(jié)構(gòu)結(jié)構(gòu)用法情態(tài)動(dòng)詞+動(dòng)詞原形表示對(duì)現(xiàn)在事情的推測情態(tài)動(dòng)詞+be+動(dòng)詞-ing表示對(duì)正在發(fā)生的事情的推測情態(tài)動(dòng)詞+have+動(dòng)詞的過去分詞表示對(duì)過去情況的推測There+情態(tài)動(dòng)詞+be+主語+現(xiàn)在分詞形式表示“可能/或許/一定有……在……”·ThebookmustbeKate’s.這本書肯定是凱特的?！hemustbedoingherhomeworkathomenow.現(xiàn)在她一定正在家里做作業(yè)?！emusthaveknownthebadnews.他一定已經(jīng)知道了這個(gè)壞消息?！tisnoisy.Theremightbesomeboysplayingsoccer.太吵了。可能是有一些男孩在踢足球。一單項(xiàng)選擇1.Accordingtothenewtrafficrules,passengersinthebackseatsofthecar______wearseatbelts.A.canB.mustC.mayD.might2.[成都]Youranswer______

beright,butI’mgoingtochecktomakesure.A.can’tB.mightC.mustBB3.—Tom,don’tplaywithfire.You______hurtyourself.—OK,Mum.A.should B.may C.must D.need4.—IthinkMissGaomustbeinthelibrary.Shesaidshewouldgothere.—No,she______bethere.Ihavejustbeenthere.A.can’t B.mustn’t C.needn’t D.wouldn’tBA二選詞填空5.Ben,don’tdrivetoofast.You_______(may/must)haveanaccident.6.Peter_______(must/may)phone.Ifhedoes,couldyouaskhimtocalllater?maymay7.Ihavejustmethimonthestreet.He_______(can’t/maynot/mustn’t)beinBeijingnow.8.It_______(can/maynot)beveryhotinsouthChinainsummer.9.—Look!Peopleoutsidearewearingthickcoats.—Theweather_______(must/may)beverycold.10.You’dbetternoteatit.It_______(must/could)bepoisonous(有毒的)can’tcanmustcould11.—Sandy,isMrLiintheteachers’officenow?—Iamnotsure.He________(must/may)bethere.12.Carla________(can’t/could)beinthelaboratorynowbecauseIsawherinthesupermarketjustnow.13.—Isthemanoverther