河北省沙河市二十冶綜合學(xué)校高中分校高中英語選修六Unit1grammar

Unit1Grammar:Modalverbs（情態(tài)動(dòng)詞）【學(xué)習(xí)目標(biāo)】：總結(jié)并掌握情態(tài)動(dòng)詞的用法。【學(xué)習(xí)重點(diǎn)】：學(xué)會(huì)使用may,can,will,should,must.【學(xué)習(xí)難點(diǎn)】：情態(tài)動(dòng)詞表示猜測(cè)的使用?！咀灾鲗W(xué)習(xí)】may與might的用法情態(tài)動(dòng)詞用法例句may與might表示允許、許可。否定答語一般要用mustn’t，表示“禁止、阻止”之意。MayIwatchTVaftersupper?Yes,youmay./No,youmustn’t.表示可能性的推測(cè)，含有“或許”“大概”“可能”之意，用might代替may時(shí)，則語氣顯得更加不肯定。Whathesaidmaybetrue.Shemayetomorrow.Hemighthavesomefever.2.can與could的用法情態(tài)動(dòng)詞用法例句can與could表示能力could是can的過去式Someofuscanusetheputernow,butwecouldn’tlastyear.Thegirlcandanceverywell.在口語中,can可以表示請(qǐng)求或允許CanIgonow?Yes,youcan.CanIsithere?表示請(qǐng)求,口語中常用could代替can,使語氣更加婉轉(zhuǎn)Couldyoulendmeyourdictionary?CouldIuseyourbike?表示說話的推測(cè)﹑事物的可能性等could是can的過去式,表示與過去有關(guān)的能力和推測(cè)Itcan’tbetheheadmaster.He’sgonetoBeijing.Weallknewthattheyoungmancouldn’tbeadoctor3.will與would的用法情態(tài)動(dòng)詞用法例句will與would用于表示意志或意愿。Will指現(xiàn)在，would指過去Iwillneverdothatagain.Theysaidthattheywouldhelpus.表示請(qǐng)求、建議等，用would比用will委婉、客氣些Willyoupleasetakeamessageforme?Wouldyoupleasepasshimthebook?表示習(xí)慣性動(dòng)作，譯為“總是”“慣于”。Will指現(xiàn)在，would指過去Fishwilldiewithoutwater.Everyevening,shewouldsitbythewindow,deepinthought.情態(tài)動(dòng)詞用法例句shall用于第一、第三人稱疑問句中，表示說話人征求對(duì)方的意見Whatshallwedonext?Shallwegobytrain,Mom?用于第二、第三人稱的陳述句中，表示說話人給對(duì)方的命令、警告、允諾或威脅Youshallgowithme.(命令)Heshallbepunished.（威脅）should表示勸告或建議，作“應(yīng)該”講Youshouldkeepyourpromise.表示推測(cè),“should+have+過去分詞”表示本應(yīng)該在過去做但沒有做Sheshouldhavepassedtheexam.她應(yīng)該通過考試的5.must用法情態(tài)動(dòng)詞用法例句mustmust用于一般問句中,肯定回答用must,否定式用

needn’t或don’thavetoMust

I

finish

all

assignments

at

a

time?—Yes,youmust.No,

you

needn't.must表示對(duì)某人某事的猜測(cè),作“準(zhǔn)是”,“一定”,一般用于肯定句中。對(duì)過去發(fā)生的事情作肯定判斷用musthavedoneYou

must

be

the

new

teacher.

He

must

be

joking.There

is

nobody

here.

They

must

have

allgone

home.【合作探究】Ⅰ、選用正確的情態(tài)動(dòng)詞填空。①can;couldWhenIwasyoungIclimbanytreeintheforest.Learningalanguagebearealchallenge.②will;wouldWhenhegotolder,heneverdohishomework.Nancykeeptalkingunlessyoutellhertoshutup.③must;can’tYouhavestayedup.Youlooksotired.Yoube45!Ithoughtyouwereabout25yearsold.Ⅱ、單項(xiàng)選擇1．——Mustwecleanthehousenow?——No,you.A.needn'tB.maynotC.mustn'tD.can't2．Asasoldier,youdoastheheadtellsyou.A.willB.shallC.mayD.ought3.Thestreetsarealldry.Itduringthenight.A.can'thaverainedB.musthaverainedC.couldn'trainD.shouldn'thaverained4.Johnetoseeustonight,butheisn'tverysureyet.A.mayB.canC.hastoD.must5.——Hebeintheclassroom,Ithink.——No,hebeintheclassroom.Isawhimgohomeaminuteago.A.can;maynotB.must;maynotC.may;can'tD.may;mustn't6.

Youbelateforschoolagainnexttime.A.mustn'tB.needn'tC.don'thavetoD.don'tneedto7.Helooksverytired．Hetobedtoolatelastnight．A．must