it is that he often failed in the exams that makesIt is__he often fails in exams___makes his parents worried about him.A.what;that Bthat;what C.that;that D.不填;that麻烦分析下句子成分
问题描述：
it is that he often failed in the exams that makes
It is__he often fails in exams___makes his parents worried about him.
A.what;that Bthat;what C.that;that D.不填;that
麻烦分析下句子成分
答
选B
It is that he often fails in exams what makes his parents worried about him.
这是it 做形式主语，从句前用that
what 引导后面的从句，再从句里做宾语。要用what 而不是that，that不能做句子成分引导从句。
答
选C 首先第2个that为强调句It is ...that...中的that 为固定搭配
你可以去掉It is ...that...来看（因为It is ...that...起强调作用 存不存在都不影响句子结构） 这是句子为That he often fails in exams makes his parents worried about him.
这时候个主语从句 在这一句中That he often fails in exams 为主句
所以归纳来说 这是个强调的主语从句
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