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1、12屆高三英語一輪復習————語法情態(tài)動詞情態(tài)動詞具有一定的詞義,沒有_____和_____的變化,不能單獨構(gòu)成_____。英語的情態(tài)動詞有下列幾種:________________________________________________________________1.can和could的用法例句:用法:HecanspeakEnglishbetterthanyou.Whocanproveit?Hecouldswimacrosstherivereveninhislateryears.比較:Hehasbeenabletofinishtheworkontim
2、e.Ifyouhaveagoodsleep,youwillbeabletoworkoutthisproblem.Thefirespreadthroughthehotelveryquicklybuteveryonewasabletogetout.用法一:1.表示天生或?qū)W到的______,can表示_____________,could表示______________。2.can和beableto的區(qū)別:都可表示能力,此時兩者在意思上沒有什么區(qū)別。但是can只能有________和________,而beableto則有________形式;表示經(jīng)過努力而成功地辦到了
3、某個具體的事情時,beableto相當于____________或_____________。CanthisgreenbikebeLiuDong's?Thiscan’t/couldn’tbedonebyhim.Mr.Bushisontimeforeverything.Howcanitbethathewaslatefortheopeningceremony?用法二:在________和________句中表示“懷疑”、“驚訝”或“不相信”Anybodycanmakemistakes.Accidentscanhappenonsuchrainydays.Itcanget
4、quitecoldatnightinthedesert.比較:Hemaybeverybusythesedays.Itcouldbebettertostayhere.用法三:1.用于肯定句中表示_______或__________可能性。2.could或may表示_______的可能性。Youcan(may)gohomenow.Youcan(may)borrowtwobooksatatimefromthelibrary.用法四:表示“________”時can可以和may換用Couldyoucomeagaintomorrow?---Could/MightIuseyo
5、urbiketomorrowmorning?---Yes,youcan/may.(否定No,I’mafraidnot.)不可說:Yes,youcould/might.用法五:如果要表示_________,可用could代替can,這時could不再是can的過去式Icannotbutchoosetogo.Onecannotbutadmireherevenifonemaynotlikeher.用法六:cannotbut+dosth.表示“_____________________”。612屆高三英語一輪復習————語法2may和might的用法Youmayusemy
6、dictionary.----MayIusethisdictionary?----Yes,please.或----Certainly.----Mayweswiminthislake?----No,youmustn’t.It’stoodangerous.用法一:表示_____________________,有“_______”之意。Theymay(might)beinthelibrarynow.Ithinkitmightrain.Hemaybehavingthemeetingnow.用法二:通常用于______句中,may或might都可以表示______,表示“
7、或許”、“可能”之意,如果用might表示可能性,則語氣更加_______。Longmayyoulive!MayyouhavemarryChristmas!Mayweneverforgeteachother.用法三:用于祈使句,表示________。(通常用______結(jié)構(gòu))1.Itmaywellrain.Herappearancehaschangedsomuchthatyoumaywellnotrecognizeher.2.Wemayaswellstaywhereweare.Youmayaswelldoitatonce.用法四:用于固定搭配中:1.maywell
8、+動詞原形