Question

求英语一题。。。麻烦分析一下各选项。。相当感谢！

---___________
---I think he is Charles
A Who do you think he is
B Do you think who he is
C Whom do you think he is
D Do you think who he is

Answer 1

楼主大可不必把这个东西想得那么复杂，其实很简单：Whom 只能出现在从句里面或是介词（如 to, from, at, of..）后面。
1． Whom 出现在从句里面时，所有用whom的地方都可以用who代替。Whom 这个词只出现在很正式的书面语。口语不用。
2． Whom 在介词（如 to, from, at, of..）后面时，不可替换。
Who told you the story? （主语）
Who is that man over there? （主语补语）
Whom/ Who did you meet at the airport? （宾语）
Whom did you give the book to? （介词宾语）
whom是who的宾格，在现代英语中一般只用于书面体，在口WHO 可以做主语，又可以做宾语
WHOM只能做宾语
例子：1,who are you? 不能是whom are you?
2,This book belongs to whom/who?两者都可以语中通常用who，但在介词后只能用whom。

Answer 2

A
do you think 是插入语成分，不影响句意。原句应为：Who is he?
插入do you think 后，he is 变为think的宾语。宾语从句用陈述句语序，所以语序变为Who do you think he is
Who的语法成分不变，所以不能变成宾格。其他具体解释可参考楼上。

Answer 3

选A
其实没什么解释的，其他三个一读就不对。你记住这个句型吧。