reason在定语从句中的用法.docx

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1、reason在定语从句中的用法例句1：Thereasonwhyhecouldnotgotherewasthathisgradesweretoolow.Thereasonwhy...isthat...这是特定句型,why引导定语从句,is后的用词为that,一般不用because.又如：例句2:Thereasonwhyshediditisthatshewouldn’tletherparentsfeeldisappointed.她做那件事是因为她不想让父母失望。该句中的why引导一个定语从句，而that引导表语从句。(1)句中that引导的表语

2、从句说明主语reason的具体内容注意以下两种结构：①Thereasonis/wasthat…当主语是reason/cause时，一般不能用because或why引导表语从句，以免造成语意重复。Thereasonwhy/forwhich(也可以省去)hewaslatewasthathegotuplate.他迟到的原因是他起床晚了。②当主语是This/That时，可以由because/why引导表语从句。Hegotuplate.Thatwaswhyhewaslateforclass.Hewaslateforclass.Thatwasbecau

3、seHegotuplate.(2)why在句中是关系副词，引导定语从句，修饰先行词reason，同时它在定语从句中作状语，此时why=forwhich，但要注意：关系词在定语从句中做主语或宾语时，要用关系代词that或which。Thereasonwhy/forwhich(也可以省去)hewaslatewasthathegotuplate.他迟到的原因是他起床晚了。Thereasonthat/which/(也可以省去)hegaveyouwasreasonable.他给你的理由是合理的。【练习】--IdrovetoZhuhaifortheai

4、rshowlastweek.--Isthat____youhadafewdaysoff?A.why      B.when       C.what      D.where变式①Isthisthereason____atthemeetingforhiscarelessnessinhiswork?A.heexplained                  B.whatheexplainedC.howheexplained             D.whyheexplained变式②Thereason____hefailedtopasst

5、heexamwas____heneverstudiedhard.A.whywhat    B.becausethat   C.whythat   D.why   because变式③Isthisthereason_____hewaspunished?Whichofthefollowingiswrong?A.why      B.forwhich    C.不填     D.that