Unit 6 Disaster and Hope Grammar 課件-高中英語外研版（2019）必修第三冊

grammarEllipsis重點一、狀語從句中句子成分的省略

when,while,if,asif,though(although),as,whether,once等連詞引導的狀語從句。1.Generallyspeaking,________accordingtodirections,thedrughasnosideeffect.

A.whentakingB.whentaken

C.whentotakeD.whentobetakenB高考中的重點省略句式歸納：

2.When________,themuseumwillbeopentothepublicnextyear.A.completedB.completingC.beingcompletedD.tobecompletedA3.Theresearchissodesignedthatonce______nothingcanbedonetochangeit.A.beginsB.havingbegunC.beginningD.begun

D4.If________thesametreatmentagain,he'ssuretogetwell.GivingB.giveC.givenD.beinggivenC

5.Whilebuildingatunnelthroughthemountain,________.A.anundergroundlakewasdiscoveredB.therewasanundergroundlakediscoveredC.alakewasdiscoveredundergroundD.theworkersdiscoveredanundergroundlakeD二、定語從句中句子成分的省略

限制性定語從句中，whom,which,that在從句中充當賓語時可省。修飾way的關系詞that/inwhich可省。三、賓語從句中句子成分的省略四、動詞不定式的省略在同一句或聯(lián)系緊密的對話里，常把不定式to后內容相同的部分省略，只保留to。1.---Youshouldhavethankedherbeforeyouleft.---Imeant________,butwhenIwasleavingIcouldn'tfindheranywhere.A.todoB.toC.doingD.doingitB

動詞不定式的省略2.Theboywantedtoridehisbicycleinthestreet,buthismothertoldhim________.nottoB.nottodoC.notdoitD.donotto3.---I'llbeawayonabusinesstrip.Wouldyoumindlookingaftermycat?---Notatall.________.A.I'venotimeB.I'drathernotC.I'dlikeitD.I'dbehappytoAD感官動詞（詞組）see/lookat/hear/listen

to

/notice

/watch

等和使役動詞make/let/have等后，用不帶to的不定式，但他們被動語態(tài)中的to不省略。Weheardsomeone(to)

godownthestairs.我們聽到某個人下樓了。Let’s

(to)havearest.Isawhimcomedownstairs.Weshould

makemoretrees

groweveryyear.Moretreesshouldbemadetogroweveryyear.but,except（除了）前，如果有實義動詞do的任何形式，后面的動詞不定式要省略to。簡要規(guī)則：but前有do后無to；前無do后有toYouhavenochoicebuttowait.（but前沒有do，所以but后要用do）Ihavenothingtodobutwait.（but前有do，所以后面不要用do）Icandonothingbutstudyhard.IhavenothingtodobutwatchTValldaylong.我除了努力學習，我無事可做。五、虛擬條件句中連詞if的省略:在虛擬條件句中，如含有had,were,should等時，if可省略，把were,should或had提前，構成倒裝.e.g.HadIknownthatairconditionerscausesomuchpollution,Iwouldhaveneverboughtone.Whatwouldhavehappened________,asfarastheriverbank?A.BobhadwalkedfartherB.ifBobshouldwalkfartherC.hadBobwalkedfartherD.ifBobwalkedfartherCPRACTICE---Doyouthinkit'sgoingtorainovertheweekend?---________.A.Idon'tbelieveB.Idon'tbelieveitC.IbelievenotsoD.IbelievenotD2.Oneofthesidesoftheboardshouldbepaintedyellow,and________.A.theotheriswhiteB.anotherwhiteC.theotherwhiteD.anotheriswhite3.---Wouldyoulikesomewine?---Yes,just________.A.little

B.verylittleC.alittleD.afewCC1.If_____,we’llcontinueourexperimentafterofficehours.A.beingnecessaryB.benecessaryC.isnecessary