資源描述:
《情態(tài)動詞和虛擬語氣高考英語語法》由會員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在教育資源-天天文庫。
1、情態(tài)動詞和虛擬語氣南召一中外語組陳果一.shall和should1.Shall(1)用在一、三人稱的疑問句中,表示征求對方的意見或指示。Eg.Shallwegooutforawalk?—HasMr.Wangarrived?—Yes,already.Shallhewaitoutsideorjustcomein?考點(diǎn)一:情態(tài)動詞的基本用法(2)用于二、三人稱陳述句中,表示命令、許諾、威脅、決心、法律條文上的許可或要求等。Eg.Youshallgotothefrontatonce.Don’tworry.Youshallgetthe
2、answerthisveryafternoon.Theschoolrulesstatethatnochildshallbeallowedoutoftheschoolunlessaccompaniedbyanadult.Youshallnotgetmysupportifyoudosuchathing.2.should(1)(表義務(wù),責(zé)任)應(yīng)該Youshouldapologizetohim.(2)(表示預(yù)測可能性)可能,(按道理說)應(yīng)該……It’snearly7o’clock.Jackshouldbehereatthemoment
3、.(3)竟然,居然Iamsurprisedthatyoushouldspeakinsuchaway.Icanneverimagineanhonestboylikehimshouldcheatintheexam.(4)一旦,萬一Shouldyouchangeyourmind,letmeknow.Ifitshouldraintomorrow,wewouldstayathome.二.can和could(1)(表示能力)能/會……(區(qū)別can,could和beableto)Acomputercan’tthinkitself.Icoul
4、dswimallthewayacrossthelake,butIcan’tnow.(2)(表示許可)Youcangooutwhenyoufinishyourhomework.(3)(表示推測,常用在否定句和疑問句中)Whocanitbeatthistimeofday?There’snolighton----theycan’tbeathome.(4)(表示請求)能不能……Canyougivemealifttothestation?(5)(表示平時(shí)或大部分時(shí)間不是這樣)有時(shí)會……(6)固定搭配1).cannot...too/eno
5、ugh表示“無論……也不過分”“越……越好”Youcan’tbetoocarefulwhiledriving.Youcan’tbecarefulenoughwhiledriving.2).can’thelpdoingsth.3).can’t(help/choose)butdosth.Theexperiencedteachercanmakemistakessometimes.三.will與would(1)表示意愿或決心(would用于過去的情況)Iwillneverdothatagain.Ihavetoldhimagainand
6、againtostopsmoking,buthewon’tlisten.(2008·北京卷)Johnpromisedhisdoctorhewouldnotsmoke,andheneversmokedeversince.(2)表示請求Willyouhelpmewiththework?WouldyoumindifIopenedthewindow?(3)表示一種經(jīng)常性、習(xí)慣性的動作would可表示過去反復(fù)發(fā)生的動作或某種傾向,后面接表示動作的動詞,不能接表示狀態(tài)的詞;usedto表示過去的習(xí)慣動作或狀態(tài),強(qiáng)調(diào)現(xiàn)在已不存在。Every
7、morninghewillhaveawalkalongthisriver.Wheneverhewasintrouble,hewouldaskmeforhelp.Ourcompanyusedtodobusinesswiththeirs.四.may與might(1)(表示請求/準(zhǔn)許)可以……Youmaynottakephotosinthemuseum.—MayIuseyourcar?—No,I’mafraidyoucan’t.注:could/might用來表示請求、許可時(shí),語氣比can/may委婉,但在答語中不能用could/mi
8、ght.CouldIuseyourbike?—Yes,youcan.MightIspeaktoyouforamoment?—Yes,youmay.eg.“may/mightaswelldosth……”意為“最好……,倒不如……”(2)表示祝愿Mayyousucceed!May