英语各种问题~

Question

(1)Men differ from animals (in that) they can think and speak .　　　　　为什么in that 不可以用For which代替?　　　　　　　　　
(2)(That) the earth goes around the sun is common knowledge.中的that是不可以省略的,那当它改写为"It is common knowledge (that) the earth goes around the sun.时that可省略吗??thx~

Answer 1

in +that+宾语从句，意思是在哪方面，做方面状语，和谓语搭配。for which引导定语从句，翻译过来就是他们能想和说为了，这个意思有点怪异啊。这两个都是主语从句 ，that绝对不能省！！！ 因为句子是不能作主语的，故用that引导。若去掉则没了主语。宾语从句that可省。
主语从句：That he is right is known to all of us.
宾语从句：We all know (that) he is right.

Answer 2

1 in that 是连接词，解释为“因为，由于”。
2 这两个that都不能省略。第一个是主语从句的连接词。第二个也是主语从句的连接词。本回答被提问者和网友采纳

Answer 3

for which有个因果关系在里面，如果要用for which的话，可以这样说：Men can think and speak for which they differ from animals.

2. 这个不确定了，感觉不能省略

仅供参考