限时练习：40min完成时间：月日天气：作业04原因状语从句原因状语从句原因状语从句的引导词有because，since，as等。注意：1.because和so不能同时使用。如：Hedidn’tcometoschoolyesterdaybecausehewas他昨天没来上学，因为他生病了。ill.2.since引导原因状语从句表示显然的或已为人知的理由，表示“因为，既然”如：Sinceeveryoneishere,let’s既然大家都到期了，我们就开始吧。start.1．（2023·江苏南通中考真题）________youcan’tworkouttheproblem,perhapsyouneedtoaskyourclassmatesforhelp.A．UnlessB．ThoughC．SinceD．Whether2．（2022·江苏淮安·统考中考真题）Wewouldliketobuyelectriccars________theyproducelessairpollution.A．becauseB．soC．thoughD．but3．（2023·江苏镇江·统考二模）—It’ssaidthatZhenjiangPotCoverNoodlesareverydelicious.—Well,________wearehere,whynothaveatry?A．thoughB．unlessC．sinceD．before4．（2023·江苏扬州·校考二模）Roadsaltiscommonlyusedtoclearthesnowonroadsduringwinter______itmakesitharderforwaterandsnowtofreeze.A．thoughB．becauseC．ifD．unless5．（2023·江苏南京·统考二模）NanjingForestMusicFestivalisworthattending________itmixestraditionalChinesemusicandmodernWesternmusic.A．whileB．untilC．wheneverD．because6．（2023·江苏扬州·统考一模）—IhearthatyouhavelivedinYangzhousinceyougotmarried.—That’strue.________thecostoflivinginYangzhouisamongthelowestinJiangsuProvince,peoplelivetherecomfortablyandhappily.A．SinceB．WhenC．AlthoughD．Unless7．（2023·江苏无锡·统考一模）Thecourseoflifeneverrunssmoothly________itisfullofupsanddowns.A．thoughB．sinceC．whileD．unless8．（2022·江苏无锡·模拟预测）Lifeislikeaone-wayrace,sotreasureeverymoment________timecannotbewonagain.A．soB．asC．ifD．unless9．（2022上·江苏南通·九年级统考期末）—It’ssaidthatBeijingDuckisveryfamousanddelicious.—Well,_______we’rehere,whynotgototherestaurantandordersome?A．unlessB．thoughC．wheneverD．since10．（2022上·江苏盐城·九年级校联考阶段练习）________everyoneishere,let’sbeginourmeeting.A．UnlessB．SinceC．AlthoughD．When11．（2022上·江苏淮安·九年级统考期末）—Whydoyoulikelisteningtomusic?—________itmakesmefeelrelaxed.A．BecauseofB．BecauseC．SinceD．As12．（2022上·江苏南通·九年级校考阶段练习）—Yourecommendmetowearanorangeshirttoday,right?—Yes.________orangecanbringyougoodluck,itisgoodforyourinterview.A．AsB．WhenC．IfD．While13．（2022·江苏镇江·统考二模）Ma