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--Thesedays,teenagersoftenhavetodowhattheyto.--It'snotgoodfortheirindependence.Theyneedtothinkontheirown.()A.tellB.aretellingC.aretold

题目详情

--These days,teenagers often have to do what they____to.
--It's not good for their independence.They need to think on their own.(  )

A. tell

B. are telling

C. are told

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答案和解析
答案:C
通过分析句子结构可知该句为主从复合句.根据主句是一般现在时,可知宾语从句可以用所需要的时态,根据句中的时间状语为these days及often可知表达现在的情况或状态,从而确定宾语从句的是时态为一般现在时,又知从句的主语they代指teenagers 是谓语动词tell的承受者,二者形成被动关系,故用被动语态,故从句的谓语动词为一般现在时的被动语态,其结构为is/am/are+及物动词的过去分词,根据主语they 是第三人称复数数形式,动词be用are,tell的过去分词为told,套用结构,故选C