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Grammar情态动词用法can&could1)can的主要用法是: A._________: Thegirlcandanceverywell. B._____________: Canthenewsbetrue? C._____________: CanIsithere?2)could的主要用法是: A.______________________________ ____________________: Weallknewthattheyoungman couldn’tbeadoctor. 我三岁就能看书了。 FathersaidIcouldgooutwithmyfriends. 3) Theycan't/couldn’thavegoneoutbecausethelightisstillon.must: Wemustn’twasteourtime.----MayItakethismagazineout?----No,youmustn’t. 5).表示推测,意为“一定是”,语气非常肯定,近乎确定的意味,一般用在肯定句。 must+v对现在的推测 Itmustbeeleveno’clocknow.Hemustgocrazy. must+have+过去分词对过去的推测 must+be+v-ing对将来或现在进行时的推测 6).表示“偏偏”,表达对某事的不满或责备等情绪。 WhymustitrainonSunday?may&might: may常用来表示: A._______________ MayIcomein? Yes,please. B.________________Theroadmaybeblocked. 这条路可能不通了。 Theroadcanbeblocked. 这条路可能会是不通的。 在疑问句中,表示可能性用can。 如:Wherecanhebe?他会在哪呢?C._____________________ Mayyousucceed! Mayyouhaveagoodjourney! will&would:2)._______________________________ Ifyouwanthelp,letmeknow,willyou? 如果你需要帮助,让我知道,好吗? Wouldyoutypethis,please? 请打印这个,好吗? Won'tyousitdown? 请坐下,好吗? Thiswillbethebookyouwant. Hewillhavearrivedbynow. Theguestswouldhavearrivedbythattime. Ithoughtyouwouldhavefinishedthisbynow. Thiswillbethebuildingyouare lookingfor.4)._________________________ Wouldyouhelpus,please? 请您帮助我们,好吗? I’dgotherewithyou. 我要和你一块到那儿去。 Teacherwouldn’tallowit. 老师不会允许这件事。 shall&should:(表“决心”,情态动词)(表“决心”,情态动词)4). Youshouldkeepyourpromise. 你应该遵守诺言。 Youshouldcallthepolice. *表示“按理说”。 It’s8o’clocknow,heshouldbehereatanymoment. *表埋怨,用于“Shouldn’t…?” Shouldn’tyoubedoingyourhomeworknow? ----____Igoouttoplay,mum? ----No,you___.Youshoulddoyour homeworkfirst. A.Might;wouldn’t B.May;hadbetternot C.Must;mustn’t D.Need;mustn’t2.---WhereisEmma? ---Ican’tsayforsurewheresheis, butshe___beoutshopping. A.can B.should C.must D.may3.Theroomisinaterriblemess;it ____cleaned. A.can’thavebeen B.couldn’tbe C.mayhavebeen D.wouldbe 4.How____yousaythatyoureally understandthewholestoryifyou havecoveredonlypartofthearticle? A.can B.must C.need D.may5.——Whatdoesthesignoverth