高中英語情態(tài)動詞復習

Can能、會，表體力、智力、技能（現(xiàn)在）；HecanswimacrosstheEnglishChannel.beabletodo可以表示成功地完成某一具體動作,可以用于更多的時態(tài)。Thewoundedmanstillwasabletogettothevillageandwassavedintheend.2.可以，表允許、許可、請求；CanIaskyouaquestion.Ofcourse,youcan.3.可能性，表推測表示比較有把握的推斷。(否定句/疑問句）Mr.Chencan’tbeinNanjing.Isawhimintownonlyafewminutesago.MrBushisontimeforeverything.Howcanhebelatefortheopeningceremony?4.有時會、有可能，表偶爾的情況或可能性Petercanbereallydifficultattimeseventhoughhe’sanicepersoningeneral.Carsplayanimportantroleinmodernlife,buttheycanalsocausemanyproblemslikeairpollution.Cannot/never------enough/too再－－不為過，越－－越好Wecannotbetoocarefulinthechoiceofourfriends.Could過去的能力Ilistened,butIcouldhearnothing.2.能、可能、或許，表可能性，表示不是很確定的推斷；Hecouldbeonhiswayhomenow.(=may/might)3.可以，表請求，比can委婉；CouldIusethisdictionaryforawhile?Ofcourse,youcan.No，I’mafraidnot.may可能、也許，表可能性（不確定）；AskTomaboutthebook.Hemay

havereadit.2.可以，表許可或請求；Youmaycomeatanytimeyoulike.MayItakethebooktotheclassroomandreturnitrightafterschooltoday?May+主語＋動詞原形表示祝愿Mayyouhavealongandhappylife！maywell+動詞原形完全能/很可能Herappearancehaschangedsomuchthatyoumaywellnotrecognizehermayaswell＋動詞原形最好，倒不如，不防做某事wemayaswellstaywhereweare.might可能、也許，表可能性；Ifyoucan’tfindhimathome,trytocallhisoffice.Hemight

beworkingintheofficenow.2.用于虛擬語氣；must必須、應(yīng)當，表義務(wù)、命令、必要,強調(diào)主觀看法；YoumustdoeverythingasIdo.havetodo表示客觀原因使得不得不做某事。Youwillhavetocleanyourownbootswhenyoujointhearmy.don’thavetodosth=needn’tdosth=don’tneedtodosth現(xiàn)在或者將來不必做某事didn’thavetodosth=needn’thavedone=didn’tneedtodosth(過去不必做）Youneedn’thaveworked/didn’tneedto

work/didn’thavetoworkthatlatelastnight.Itwasharmfultoyourhealth.2.很可能、想必，表推測(有把握的推斷,用在肯定句中）；--Goodmorning,I’vegotanappointmentwithMissSmithinthepesonnelDepartment.---Ah,goodmorning.YoumustbeMrspeters.Jackdescribedhisfather,whomusthavebeenabraveboymanyyearsago,asastrong-willedman.3.偏要、偏偏、非得，表不耐煩或與說話人愿望相反；--Howoldareyou,madam?--Ifyoumustknow,I’mtwicemyson’sage.4.mustn’t禁止、不允許；Youmustn’tparkhere!It’sanemergencyexit.shall1.將要，表將來（一人稱）2.可以，表征求意見、建議（一/三人稱）Shallwebeginourdiscussion?Shallthedriverwaitoutside?3.表命令、警告、要求、允諾、承諾、威脅等（二、三人稱）其中文意思較為靈活；YoushallhavethebookwhenIfinishit.（允諾）Youshallgowithme(命令）4.宣告法律，規(guī)定時，也用shall。IthasbeenannouncedthatcandidatesshallremainintheirseatsuntilallthepapershavecollectedShould應(yīng)當、應(yīng)該，表義務(wù)、責任=oughttodo；Ishould=oughtto

goandvisithimthisafternoon,butIwonderifIwillbefree.2.可能、該、估計、按道理…，表推測；Whatdoyoumean,thereareonlytentickets?Thereshouldbetwelve.--WhencanIcomeforthephotos?Ineedthemtomorrowafternoon.--Theyshouldbereadyby12:00.3.居然、竟然，Idon’tknowwhyyoushouldthinkthatIdidit.4.用于建議、命令、要求、堅持等詞的相關(guān)從句中；5.用于虛擬語氣中；will將要，表將來(現(xiàn)在看來以后要發(fā)生的動作并沒有事前安排計劃）Ithinkshewillpasstheexam.2.要、愿、會，表意愿、意圖、決心等；YouwillfindpleasureinreadingifyouwillreadshortstorieswritteninEnglish.

3.表邀請、請求，二人稱；Will/Wouldyouholdthiscandleforme?4.表事物固有屬性或必然的趨勢；Fishwilldiewithoutwater.Thedoorwon’topen.would1.將要，表過去將來；2.表邀請、請求，比will委婉；3.表過去習慣性的或反復發(fā)生的動作。WhenIwasyoung,Iwouldgoswimminginsummerandskatinginwinter.(=usedtogo)usedtodo過去常常（現(xiàn)在不再那樣）4.用于虛擬語氣；need/dare用作行為動詞時，后面接動詞todoYoudon’tneedtotrytoexplain.2.用作情態(tài)動詞時，在疑問句、否定句中，后接動詞原形；Hedarestodoanything,buthedarenotdothis.3.dare作行為動詞時，在否定句和疑問句中的后面動詞的to可省略

Idaresay我想，大概情態(tài)動詞＋havedonemusthavedone肯定做過某事。(對過去有把握的推斷，用在肯定句）can’thavedone肯定沒有做過某事canhavedone對過去有把握的推斷，用在否定句或者疑問句）Itmusthaverainedlastnight,fortheroadwasquitemuddy.IsawMr.wangjustnow.Hecan’t

havegonetoBeijing.Canhehavegonetohisaunt’s?couldhavedone過去本能做的事情，未能做Youcouldhavecome5minutesearlier.couldn’thavedone過去不可能做過某事。IsawMr.wangjustnow.Hecouldn’t

havegonetoBeijingmay/mighthavedone可能做過某事，不太有把握的推斷，用在肯定句或否定句中，might表示語氣更不確定。It’stoolate.Ithinkhemayhavegonetobed.Shemighthavecaughtacold.should/oughttohavedone本該做的事情，實際上沒有做shouldn’t/oughtn’ttohavedone本不該做的事情，實際上做了。Youshouldhavecometothemeetingearlier.Youshouldn’thavetoldherthetruth.needn’thavedone本不必要做的事情，實際做了Youneedn’thavetakenataxihere,foritwasveryneartomyhouse.wouldratherhav