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短文改错之连接词连接词的用法复杂，其引导的从句种类非常多。连词主要分为并列连词（连接并列句）和从属连词（引导从句）从属连词引导的从句又可分为名词性从句、状语从句等1.as可引导多种从句，如时间状语从句、原因状语从句、让步状语从句、方式状语从句、比较状语从句、定语从句Whichyoucansee,heisalwaysreadytohelpothers.AsYoungalthoughheis,heknowsalot.Asas引导非限制性定语从句，意为“正如”as引导让步状语从句，表语提前ThereasonwhyIdidn'tgotoFrancewasIgotanewjob.Itdoesn'tmatterhecan'tcometohelpus.thatthatreason作主语，引导表语从句的连词用that,且一般不省略it是形式主语，that引导主语从句，不能省略2.that和what的用法Whathefailedtheexamagainmadehiaparentsverydisappointed.Youmustrememberthathetoldyou.Thatwhat3.what和how引导感叹句Howaninterestingstoryhetoldus!what4.whether和ifIfyoucanpasstheexamdependsonhowhardyouwork.I'mnotinterestedinifheagreeswithme.5.while,when,as引导时间状语IpickedupsomeFrenchwordsasIwashavingaholidayinParis.ItwassnowingwhileIgottoChangchunas强调两个动作同时进行，while强调“在...过程中”只能是延续性动词。wasdoing...whenwasabouttodo...whenwhilewhenItmusthaverainedmuch,theriverissohigh.后一句为前一句的推断提供理论依据，加以解释，所以应用连词for。for6.because,as,since,nowthat,for表原因Forwe'vefinishedmostofthework,let'shavearest.Since大家都清楚的原因用since,nowthatbecause表示直接的原因，可以回答why的提问WehadhardlyfinishedourhouseworkWangPingcametoourhouseforavisit.whenhardly...when...表示“刚...就”7.固定搭配1.MyEnglishteacheralwaysmadegoodpreparationsforthelessons,shetriedherbesttomakeherclasseslively.2.Ihadnosoonerclosedthedoorthetelephonerang.3.Itbegantorain,theyhadtostopthematch.4.Whathenoticedwasoneofthewindowsfacingnorthwasopen.5.EverybodycouldseewhathappenedandTomwasfrightened.6.Accordingtostudies,manychildrenspendmoretimewatchingtelevisionthattheyspendinschool.7.Iwasjustwonderingtostayforanotherhourorjuststartoffrightaway.8.Whilereadingthispassage,makemarkstherearemistakes.9.Helookedjusthehadlookedtenyearsbefore.10.Itwillbethreemonthswemeetagain.11.Iwonthefirstprize,thatagainremindedmeofyourgreathelp.12.Everyoneagreedtohissuggestionswhichweshouldholdameetingtotalkabouttheproblem.13.Hehaswrittenmanybooks,twoofthemarewidelyread.14.Iamnotapersonwhomisveryrich,butIdohavesomethingverypreciousinmyroom.15.Itwasyesterdaywhenhebrokethewindow.16.Youmustfirstlearntowalkafteryoutrytorun.17.Onecannotlearnaforeignlanguagewellifhestudieshard.18.Childalthoughhewas,helookedquitecalminthatdifficultsituation.19.Azooisaparktheremanykindsofanimalsarekeptforexhibition.20.Wewillfinishtheworkontime,howeverdifficultieswemeet.