幼儿园毕业相册设计:宾语从句的用法 who whom with whom 等等的区别是什么？

限制性定语从句

关系代词that/which, who/whom/whose
a.必须用that情况(略)
b.必须用which情况(略)
c.定语从句的谓语须与先行词保持一致
e.g. I, who am your friend, can understand you.
The books which lie on the desk are mine.
He is one of the students who were present.
He is the only one of the students who was present .
d.关系代词的省略
1)作及物动词或介词的宾语,作表语.
e.g. He is all (that )a teacher should be.
2).如果句首或句尾是there is ,here is ,that is, it is时,用作主语的关系代词可以省略，这种情况主要用于口语中.
e.g. Who was it (that )said so?
Here issomebody (that)wants to see you.
That is the best dictionary (that)there is in this library.
There is a man downstairs(who) wants to see you.
3)非限制性定语从句who ,whom, which, whose等不能省略
e.g .My brother ,who isa teacher, can speak German.
Mr. A, whom you know ,is the tallest in our class.
The weather turned out to be very good, which was more than we could expect.
e.介词与关系代词
prep +whom/which+ to infinitive=形容词短语
e.g. The poor man has no house in which to live.=The poor man has no house to live in.=The poor man has no house in which he can live.
The beggar has no money with which to buy food.=The beggar has no moneyto buy food with.=The beggar has no money that /which he can buy food with.