吉林省四平市高考英语专题复习 情态动词课件(1).ppt

情态动词 can1 表能力e g icanspeakfrench 2 表许可 肯定句 或请求 疑问句 maye g can couldilookatyourwatch ofcourseyoucan e g hesaidicouldusethecomputer 3 表推测 疑问和否定句 can t couldn tdo bee g whathesaidcouldn tbetrue hecan tbeastudent e g canitbetrue tadayissunday hecan tbeatschool can t couldn tbedoing 不可能正在做某事 e g hecan tbereadingbooknow can t couldn thavedone 不可能已经做了某事 e g hecan thavegoneabroad forisawhimthismorning4 表理论上的可能性evenexperiencedteacherscanmakemistakes 4 表理论上的可能性e g evenexperiencedteacherscanmakemistakes e g accidentscanhappenatanytimee g itcouldbeveryinterestingtogooutforadrive e g itcanbequitecoldatnoghthere can和beabletocan表示本身具有的能力beableto在某特定场合下 经过努力做到很难做到的事e g ishallbeabletofinishtheworknextweek e g tomwasabletoescapefromthefireyesterday e g theyoungmancan tcarrythebigstone e g thefirebrokeoutyesterday but7peoplewasabletoescape may might1 表允诺 许可 can e g youmaysmokehere e g mayileavenow yes may no mustn t can t you dbetternot 2 表示祝福 用于祈使句e g mayyousucceed e g maygodblessyou 3 表示推测 可能 肯能 canmay mightdo bemay mightbedoing 可能正在做某事 may mighthavedong 可能已经做了某事 may might4 may mightaswelldo 最好 e g youmayaswellstayathome shall1 一三人称疑问句 向对方提出建议 e g shallitellhimthenews e g shallthedriverwait 2 二三人称陈述句 说话人得允诺 命令 威胁 警告等 e g youshalldoaswhatisay e g youshallgetananswerfrommetomorrow 3 在规章制度e g everyoneshallgettoschoolatsix e g canigetoutinthedaytime no theschoolrulesstatethatnochild beallowedoutduringtheday unlessaccompaniedbyanadult should1 应该e g youshouldkeepyourpromise 2 常规推测 理应 e g itisnearlyseven jackshouldbehereatanymoment e g theysouldbeathomebynoow fortheyhavebeenawayfortwohours 3 竟然 表惊讶e g howshouldyoubesorudetoyoumother 4 用在if条件句中 表一定程度的可能性 万一 ifyoushouldhappentomeetmarry giveherthispackage ifyoushouldchangeyourming pleaseletmeknow 5 should oughtto havedoneshouldn t oughtnotto havedone 责备 besupposedtohavedonee g youshouldhavecalledmerightawaye g youshouldn thavetoldherthenews 6 用于第一人称表示说话人的谦逊 客气 委婉的语气 e g youaremistaken ishouldsay 依我看你是搞错了e g ishouldadviseyounottodothat 我到是建议你别这样做 7 一个 坚持 insist二个 命令 order command四个 建议 suggest suggestion advise advice propose proposal recommend recommendation 五个 要求 demanddesire require request aske g iinsistedthatshe should doherworkaloneandididsooutoflove e g mysuggestionisthatweshouldgotoseeadoctor 表语从句 e g mysuggestionthatweshouldgotoseeadoctorwasaccepted e g itissuggestedthatweshouldgotoseeadoctor 8 用在 itis 形容词 that should do itisnecessarythatishouldstudyhard itisnaturalthatyoungpeopleshouldbeoftenuncomfortablewhentheyarewiththeirparents necessary strange natural important essential right impossible vital must1 表禁止e g youmustnotplaywithknife2 表非得 偏要e g mustyouplaythepianoatmidnight e g ifyoumustgo atleastwaittilltherainstops e g themachinemustbreakdownatthisbusymoment must3 推测 只用于肯定句 e g tommustbeateachere g tommustbereadingupstairse g tommusthavefinishedthehomework thelightisstillon sohemustbeathome 灯还是亮的 他一定在家 thelightwasout theymusthavegonetobed 灯都熄了 他们必定睡了 cancould只能用于否定句 must haveto区别imuststudyhardihavetostudyhard回答说 yes mustno don thavetono needn t will would1 表意愿e g theysaytheywillhelpus ifyouwillhelpme iwillappreciateit 2 用于第二人称的疑问句中 表询问对方意愿或向对方提出要求e g will wouldyoustayhere 2 表一般倾向 规律性 习惯e g thedrawerwon tshut e g mypenwouldn twrite e g fishwilldieoutofwater e g oilwillfloatonwater e g accidentswillhappen 意外总是难免的 would表示过去经常性反复性发生的动作usedto过去存在但是现在已经停止e g hewouldsitforhourslikethisheusedtoreadinthesun dare need1 实义动词sbdare needtodosbdon t doesn t didn tdare needtodoe g idaretosay ineedtobathe2 情态动词 否定和疑问句和条件句 e g heneedn tstayhere e g hedaren tstayhere sb sthneedtobedonesb sthneeddoinge g tomneededtobepunished e g tomneededpunishing e g thedoorneedstobepaintedbyaskilledworker need want require 情态动词重点考点1 must have done e g itmusthaverainedlastnight forthegroundiswet e g youmusthavebeenmadtospeaktotheservant 2 can t couldn thavedonee g mr smithcan thavegonetobeijing forisawhiminthelibraryjustnow e g marycan thavestolenyourmoney shehasgonehome 3 may might not havedone whathashappenedtogeorge idon tknow hemayhavegotlost 4 couldhavedonee g ifyou dgiventhejobtome icouldhavedoneitinhalfthetime e g whydidyoutypetheletterwhenicouldhavedoneitforyoueasilybycomputer 6 shouldn thavedone oughtnothavedonee g look tomiscrying ishouldn thavebeensoharshonhim 7 needn thavedonee g ineedn thaveboughtsomuchwine onlyfivepeoplecame 8 wouldhavedonethevictim 本来会有机会活下来 ifhehadbeentakentohospitalintime ifihadn tbeenbusythatday iwouldhavegonetherewiththem 经典考例1 theweatherturnedouttobefineyesterday i thetroubletocarrymyumbrellawithme a shouldhavetakenb couldhavetakenc needn thavetakend mustn thavetaken 经典考例2 we haveprovedgreatadventurers butwehavedonethegreatestmarchevermadeinthepasttenyears 2006天津 a needn tb maynotc shouldn td mustn t 经典考例3 asyouworkedlateyesterday you havecomethismorning 2006陕西 a mayn tb can tc mustn td needn t e g hethough