新沪教牛津八下英语U8语法精讲精练

新沪教牛津八下英语Unit8Imaginethat!原因状语从句原因状语从句语法精讲精练（学生版）时间：45分钟满分：100分囚语法精讲·原因状语从句用法详解与经典例句because语气最强，表示直接、根本的原因，常用来回答why提问。可放主句前或主Ů注意：强调原因从句时只能用because（如：Itwasbecausehewasillthathedidn'tgo.）爨例：Hedidn'tgotoschoolbecausehehadafever.他没去上学因为他发烧于语气较弱，通常放于主句前，所表达的原因比较明显，口语中常用。爨例：Asitisrainingoutside,wehavetocancelthepicnic.因为外面下雨，表示已知的或对方已了解的原因，常放句首，相当于“既然”。爨例：Sinceyouarealreadyhere,let'sstarttheexperiment.既然你都已经来表示推断或补充解释，不可放句首，且前面通常有逗号。for引导的分句不爨例：Thegroundiswet,foritrainedlastnight.地面是湿的，因为昨晚下过✨✨【特别提醒】Ìbecause&so不能同时出现在一个句子里。英语中原因与结果连词只用一个，如不能说：Becausehewastired,soherested.x应改为Becausehewastired,herested.✅Übecauseof是介词短语，后接名词、代词或动名词（不能接句子），表示“因为”。例：Hewaslatebecauseoftheheavytraffic.(由于交通拥堵)Øsince/as引导的从句通常放在主句之前，强调既定事实或明显的原因。Ä若强调原因状语从句，只能用because，并可使用强调句型Itis/wasbecause...that...一、单项选择(本大题共30小题，每小题2分，共60分)1.Weshouldprotectthewetlandstheyarehometomanywildanimals.A.orB.becauseC.but2.youhavenointerestinspace,whynotjointheartclubinstead?A.BecauseC.ForD.Though3.Hedidn'tpasstheexamhedidn'treviewthekeypointscarefully.B.butC.becauseD.although4.Thelittlegirlimaginedherselfflyingtothemoon,shewascrazyaboutastronauts.A.forD.unless5.youhavealreadyfinishedyourhomework,youcanwatchthesci-fimovie.B.ThoughC.If6.Theycancelledthespacecampthebadweather.A.becauseB.becauseof7.Icouldn'theartheteacherclearlythestudentsbehindweretalkingloudly.B.becauseC.butD.if8.everyoneishere,let'sbeginourbrainstormingaboutfuturerobots.A.BecauseofD.For9.Shelovescollectingstampsshecanlearnaboutdifferentculturesfromthem.A.becauseC.but10.—Whydidyouchoosethisnovelasyourbookreport?—itshowsawonderfulimaginationofthefuture.A.BecauseD.For11.Theteacherwasverypatientshealwaysexplaineddifficultconceptsinacreativeway.A.becauseB.thoughC.ifD.while12.thealarmclockdidn'tgooff,Iwaslateforthespacelecture.B.BecauseC.ButD.AlthoughD.Becauseof13.Wemustsavewateritisavaluableresourceontheearth.B.butC.because14.Helookedtired,hehadstayeduplatetodesignamodelspaceship.A.forC.but15.youareinterestedinartificialintelligence,youcanjointheAIclub.A.BecauseofC.ThoughD.Unless16.Theyoungwriterbecamefamousnotluckbuthiscreativeimagination.A.becauseof;becauseB.because;becauseofC.becauseof;becauseofD.because;because17.Wecouldnotseethestarsthatnightthickcloudscoveredthesky.A.becauseC.butD.although18.youaretheoldestintheteam,youshouldsetagoodexample.A.AsC.For19.Shedidn'tbuythesmartwatchitwastooexpensiveforastudent.A.becauseC.ifD.while20.—Whyareyousohappytoday?—______Iwonthefirstprizeinthesciencefictionwritingcompetition.B.BecauseC.ForD.As21.itwasgettingdark,wehadtostopobservingthestarsandgohome.A.BecauseC.But22.Hemissedtheearlybus,hehadtowaitforthenextone.A.becauseD.but23.WealllikeMr.LihemakeshisEnglishclasslivelyandfullofimagination.A.becauseB.thoughD.if24.youhavealreadyreadthissciencebook,youcanwriteabookreview.B.AlthoughC.Unless25.Thematchwascancelledtheheavystorm.A.becauseB.becauseof26.Ididn'tcallyouyesterdayevening,Iwasbusypreparingforthesciencefestival.A.becauseC.but27.ShekeptadiaryinEnglisheverydayshewantedtoimproveherwritingskills.A.becauseB.ifC.thoughD.until28.youhaveastronginterestinrobotics,whynotapplyforthesummercamp?A.BecauseofC.ForD.Evenif29.Theoldmanfeltproud,hisgrandsonhadbecomeanastronaut.A.forD.but30.thenovelisverylong,Ifinishedreadingitintwodaysbecauseitwassofascinating.A.AlthoughB.Because二、完成句子(本大题共10小题，每小题4分，共40分)31.heisimaginativeandalwaysthinksoutsidethebox,hewaschosentodesigntheschoollogo.（因为他富有想象力且总能跳出框框思考，他被选中设计校徽。）32.Weoftenvisitthesciencemuseumwecanlearnaboutthelatestspacediscoveries.（我们经常参观科技馆，因为我们可以了解最新的太空发现。）33.Youhavealreadyfinishedallyourtasks.Youmaygoandrestnow.(合并为一句) youhavealreadyfinishedallyourtasks,youmaygoandrestnow.34.Theflightwasdelayedthesuddenfogattheairport.（由于机场突发大雾，航班延误了。）35.Tomtowatchthetalkshowitisbothfunnyandinspiring.（汤姆想看这个脱口秀节目，因为它既有趣又鼓舞人心。）36.Mymotherkeepstheoldphotoalbumitbringsbacksweetmemoriesofherschooldays.（我妈妈保留着旧相册，因为它唤起了她学生时代的美好回忆。）37.—Whywereyouabsentfromtheonlineclassyesterday?—I(have)aseriousheadacheandcouldn'tfocus.（——你昨天为什么没上线上课？——因为我头痛得厉害，无法集中注意力。）38.Ms.Greenwasverybusy.Shedidn'tjointhescienceclubmeeting.（合并为一句）Ms.Greendidn'tjointhescienceclubmeetingshewasverybusy.39.thisnewenergytechnologyi