高一英语（下）必修三Unit 2 Grammar

Grammar

ModalVerbs(2)Grammar

1.MustIfinishmyhomework?Yes,you_______.No,you________________________.

2.Needyougotoschool?Yes,I_______.No,I____________

3.MayIuseyourbike?Yes,you_______.No,you______________________________.mustneedn’t/don’thavetomustneedn’tmaymustn’t/can’t/you’dbetternotStep1Revision选词填空(can,may,must,could,might,beableto,will,shall,would,should,oughtto,dare)1.Thegroundiswet,it_____haverainedlastnight.2.---Iheardtheywentskiinginthemountainslastwinter.--It____(not)betruebecausetherewaslittlesnowthere.3.--IsJohncomingbytrain?--Heshould,buthe____not.Helikesdriving.

4.Aleftluggageofficeisaplacewherebags____beleftforashorttime,especiallyatarailwaystation.5.Sir,Themaidhasarrived.____shecleanyourbedroom?mustcan’tmaycanShall6.Theboatturnedover,buteveryone_______getontothebank.7.Johnny,you_________(not)playwiththeknife;you_______hurtyourself.8.Ifyoulistentome,you_______havesomecandies,dear.9.You____haveusedmydictionaryyesterday,Ididn’tuseitthen.10.Seewho’sthere!_____itbeMary?11.ThedoctorsaidI________(not)gobacktothehospital;mylegisallrightnow.

wasabletomustn’tmayshallcouldCanneedn’t12.Stop!I______(not)listentoyournonsense.won’t13.Withoutairandwater,humanbeings_____die.will14.Theflowersaredead.You______________havewateredthembefore.15.Whenhewasyoung,he________raisesomestrangequestions.16.Youknowsomuch.I_____sayyouoncereceivedagoodeducation.should/oughttowoulddareStep2NeedandDareneed“必需”“需要”;

---MustIbeherebefore9o’clock?---No,youneedn’t.(不能说:No,youmustn’t.)---NeedIbeherebefore9o’clock?---Yes,youmust.(不能说:Yes,youneed.)

注意:1)need作情态动词,多用于否定句,疑问句中.在陈述句中,应该用need的实义动词表达.

Youneedtobeherebefore9o’clock.2.)Mycomputerbrokedown.Itneededrepairing.=Itneededtoberepaired.

needdoing/needtobedone某事需要被做

Nobodyneedtobeafraidofcatchingthedisease.Nobodyneedbeafraidofcatchingthedisease.Thesedishesneedbecleanedcarefully.Thesedishesneedtobecleanedcarefully.Thesedishesneedcleaningcarefully.TrueorFalsedare(过去式dared)“敢于…”Hedarenotgointothebuildingeveninthedaytime.Howdareyouaskmesuchaquestion?Ifyoudaresaythatagain,youshallbepunished.注意:dare作情态动词时,多用于否定句,疑问句,if条件句中在肯定陈述句中,要用dare的实义动词来表达“敢于”.在实义动词dare的否定句中,可以省去后面的to.Hedaregointothebuildinginthedarknight.Hedarestogointothebuildinginthedarknight.Hedoesn’tdare(to)tellusthetruth.dare(过去式dared)“敢于…”判断正误:判断正误:

Howdareyousaysuchathing?Howdareyoutosaysuchathing?Hedaren’ttospeakEnglishbeforesuchacrowd,didhe?Hedaren’tspeakEnglishbeforesuchacrowd,darehe?Step3情态动词+完成式动词

(指过去的动作或情况)may/mighthavedonesth.可能做过(了)某事can’t/couldn’thavedonesth.不可能做了某事musthavedonesth.准是做了某事needn’thavedonesth.本不必做某事(实际上已做)couldhavedonesth.本可以做某事(实际上没做)shouldhavedonesth.本应该做某事(实际上没做)oughttohavedonesth.本应该做某事(实际上没做)shouldn’thavedonesth.本不应该做某事(实际上已做)oughtn’ttohavedonesth.本不应该做某事(实际上已做)1.Iheardthatyourdogdied.Itmusthavebeenveryupsetting.2.Itmighthavebeensoldbythetimewegetthere.3.Jackcouldn’thavearrived.Otherwisehewouldhavetelephonedme.4.Heshouldn’t/oughtn’ttohaveboughtthatcar,it’salwaysbreakingdown.5.Weshould/oughttohavestoodintheotherqueue,itwentdownquicker.6.Youneedn’thavecleanedthewindows.Itwasn’tyourduty.情态动词+动词完成式1).地板很湿,昨晚一定下雨了.

Thegroundisratherwet,soit_______________lastnight,didn’tit?

2).汤姆可能去上海了,但我不是很肯定.

Tom_________________toShanghai,butI’mstillnotsureaboutit.

3).地板很干,昨晚不可能下雨了。

Thegroundisverydry,soit________________lastnight.

4).一定有人闯入了我们的卧室,谁会这样做呢?

Someonemusthavebrokenintoourbedroom.Who_________________it?musthaverained

mayhavegonecan’thaverainedcouldhavedone121).---Maryhasgotmadandhasbeensenttothementalhospital.Didyoutellherboss?---Yes,butI____________herhusbandfirst.A.shouldn’thavetoldB.shouldhavetoldC.musthavetoldD.needn’thavetold2).He_________fullmarks,buthewassocarelessastomakeaspellingmistake.A.musthavegainedB.canhavegainedC.couldhavegainedD.mustgain

CB3).---Didyouscoldhimforhismistake?---Yes,but_____it.A.I’drathernotdoB.I’dnotbetterdoC.I’drathernottohavedoneD.I’drathernothavedoneD

musthavedonemay/mighthavedonecan/couldhavedone

(用于否定和疑问句中)

should/oughttohavedoneshouldn’t/oughtn’ttohavedonecouldhavedone(用于肯定句中)

needn’thavedonewouldratherhavedone表“推测”表“责备”“遗憾”summaryHelookssleepy.Lastmight,hemust…Lastnight,hemay/might…Lastnight,hecouldn’t…Lastnight,heoughtto……Jumptoconclusions(结论)workinpairsandmakeasmanysentencesaspossibleastowhatmayhavehappened,usingmodalverb+have+pastparticiple.e.g.WhenIarrivedatschooltoday,therewerepapersalloverthefloorintheclassroom.P