Question

英语一道从句的题目，这道题应该选what还是why呢？

He works too hard. That's ____ is wrong with him.
A.what B.why
之前看到一个广告词，This is why we play.
就选了B了.....请问B错在哪里了呢？

Answer 1

这道题答案应该选what哦，可以观察句型That is 接下来接的是表语，表示那就是…什么东西，然后常见句型what is wrong with sb里面what 做主语，而不是why。why是关系副词，不做成分，所以如果你想用why应该这么写That's whypeople don't play with him. 因为后面这个句子不缺成分，所以用关系副词表示原因为什么. That's 后面叫表语从句，看从句有没有缺成分，缺成分选关系代词，不缺才用关系副词。望采纳哟

追答

这道题答案应该选what哦，可以观察句型That is 接下来接的是表语，表示那就是…什么东西，然后常见句型what is wrong with sb里面what 做主语，而不是why。why是关系副词，不做成分，所以如果你想用why应该这么写That's whypeople don't play with him. 因为后面这个句子不缺成分，所以用关系副词表示原因为什么. That's 后面叫表语从句，看从句有没有缺成分，缺成分选关系代词，不缺才用关系副词。望采纳哟

Answer 2

首先，能with him的肯定是名词或代词，如果是考试你可以毫不犹豫立刻选A(what),。其次，深究一下，why主要词性是关系或疑问副词，通常后面肯定是从句，若作为名词(原因)解，后面应该是一个修饰或补充说明的句子或短语，你看is wrong with him像吗？

Answer 3

This is why we play.这句why在从句why we play里做原因状语
That is what is wrong with him.这句里what在从句what is wrong with him里是做主语，除此之外，what is wrong with sb是常用搭配，表示某人怎么了，why is wrong本身就是错误的，没有这个搭配

追问

请问why在这里this is why....不是表语从句吗？

Answer 4

因为选why 后从句部分缺主语，所以选what才对。