高中英语题求助

Question

i am still wondering（ ）thatmakes him so happy.
A why it is B how it is C what he does D what it is
请说的很详细 为了避免先入为主 我不说答案 重点解释下c

Answer 1

D，what从句为宾语从句，it指代that从句。翻译为，我想知道是什么让他那么高兴。

Answer 2

D。
同位语
that 是 what it is 的同位语
我在疑惑究竟是什么另他这么开心。

it is something that makes him so happy,

I am still wondering what it is.

做这样的题目要分开句子，然后看通不通顺

Answer 3

D what it is

这是两个句子合并.

it is something that makes him so happy,

I am still wondering what it is.追问

为什么不是c

追答

that what he does makes him so happy.
主语从句.
I am still wondering it .

合起来:
I am still wondering that what he does makes him so happy.

追问

that的先行词是什么？it？ 这个是宾语从句吧 我i是主语
为什么这么改就错了 i am still wondering it that what he does makes him so happy.这里用“that....”描述it？ 分析详细了加分

追答

I am still wondering (that what he does makes him so happy.)
这是宾语从句, 从句里面,有一个主语从句.

i am still wondering it that what he does makes him so happy.

这也可以.

i am still wondering it (that what he does makes him so happy.)

括号内是it 的同位语.
都可以的,

追问

袄~~反正一定要在what前面加个that？

追答

是啊,要不然,he does 就没地方放了.不成句.
it is是系表,跟这个略有不同.

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