1、This is _____ I wanted.
A. the one what
B. which
C. one which
D. the one
为什么选D不选A？
2、-Have you found the information about famous people _____ you can use for the report?
-Not yet.I'll search some on the Internet.
A. which
B. who
C. what
D. whom
为什么选A不选B？
1.This is the one (that) I wanted. what=all that This is what I wanted
2. 先行词是information，而非people,所以用which而非who,who 只能替代人
1、This is what I wanted. 或者This is the one I wanted. 前者what I wanted 为表语从句（这里和宾语从句差不多）。后者I wanted为定语从句，省略了关系连词,that/which。
This is the one what I wanted。what I wanted不能跟在the one 后面做定语。
2、检查一下句子的意思，就会发现，you can use for the report 形容的是前面的information，你可以用来报告的信息。about famous people 形容那些information，你可以用来报告的关于人的信息。
既然是形容信息，就是that/which，而不是who。
第一题:what在表语从句中(跟在BE动词后面的句子)只能用做主语,你说的句子中WHAT做谓语,
比如说:What he did makes me unhappy.
翻译为他所做的让我不高兴,what指代他所的,是他所做的让我不高兴,此时做主语.
如果你不能很深刻理解,你只需记得你在做题遇到BE后面的有选what的就不选,因为英语题这种类型考的就是这个知识点.
第二题:你把句子的意思理解错了,about famous people 修饰的是information,是一个定语,只做修饰,而
you can use for the report(翻译为你可以在报道中用到),也是用来修饰information的,中间就要有个关系代词,你想一下,information是名词所以该用which或是what.整个句子你就看成这样:Have you found the information which you can use for the report.就可以了
你还要多理解啊!