-2022屆高三英語一輪復習before 句型小專題 講義素材

before句型小專題before作介詞：表時間：在….之前（注：before不能加一段時間）e.g.Youshallarriveatschoolbefore8:00a.m.e.g.WecanfinishthetaskbeforeFriday.e.g.PeoplewillpreparesomegiftsbeforeChristmas.三天前：threedaysago√beforethreedays×表方位：在….之前=infrontof…e.g.Thereisastudentbeforethedesk.e.g.Themountainappearedbeforeusatonce.e.g.Hemadeaspeechbeforethestudents.e.g.Don’tmentionitbeforeme.3.表順序：先于..;在…之前e.g.Sheranksbeforeyou.4.longbefore:很久以前beforelong:不久以后e.g.Theworkwillbefinishedbeforelong.e.g.Shesaidshehadheardofitlongbefore.before作連詞，引導時間狀語從句在…之前e.g.Thinkitoverbeforeyouact.e.g.Iknewthetruthbeforeyoutoldme.趁著沒…..e.g.Beforetheteacherfoundhim,heranoutoftheclassroom.e.g.BeforeIforgotthewords,Iwrotethemdownimmediately.beforesb.can/coulddosth:某人沒來得及做…就….e.g.BeforeIcouldsay,herushedout.e.g.BeforeIcouldanswerthephone,itstoppedringing.e.g.大家還沒來得及告別，就畢業(yè)了。Beforewecouldsaygoodbye,wegraduatedbefore句型：時態(tài)遵守“主從句一致”或“主將從現(xiàn)”。翻譯：肯定句：過了多久才….否定句：沒過多久就……Itwillbe+時間段+before…..（主將從現(xiàn)）Itwas+時間段+before…..（從句用一般過去時）e.g.Itwillbefouryearsbeforehegraduates.e.g.Itwon’tbeaweekbeforewemeetagain.e.g.Itwassometimebeforewerealizedthetruth.e.g.Itwasn’ttwoyearsbeforeheleftthecountry.e.g.HowlongdoyouthinkitwillbebeforeChinasendsamannedspaceshiptothemoon?before練習題：TheAmericanCivilWarlastedfouryears_______theNorthwonintheend.Hemadeamistake,butthenhecorrectedthesituation________itgotworse.Itwasevening________wereachedthelittletownofWinchester.Itwassometime_________wefoundthemistake.Scientistssayitmaybefiveorsixyears_____itispossibletotestthismedicineonhumanpatients.Itwillnotbelong_______he_______(know)theresultoftheexperiment.Itisalmostfiveyears________wesaweachotherlasttime.-----DidJerrycomebackearlylastnight?-----Yes.Itwasnotyet8p.m.______hearrivedhome.______Iwenttosleep,Ibrowsedthroughnewswebsitesandcheckedmyemails.Legendhasitthathewasturneddown1009times_________hischickenwasfinallyaccepted.改錯：AfterIgoskiing,Imakesuretohaveallofthepropernecessities.Ittookusalongtimeafterwemanagedtoclimbedout,butIfoundoneofmykidswasmissing,soIwentbackinsideandfoundhersafeandsound.YoualwaysrepeatedthewordsmanytimesafterIcouldlearnthemallbyheart.Ithasbeentwoyearsbeforewehiredacleaninglady.Forsomereasonmyhusbandhasbecomedemandingtowardher.Itwillbeonemonthsinceheseeshismother.before練習題答案：before2.before3.before4.before5.before6.before;knows7.since8.when9.before10.be