中公教育军考考试网定期更新高中士兵考军校英语科目占100分，学好英语知识在于日积月累、多读多练、多听多记。中公教育军考考试网定期更新高中英语知识点汇总，供各位考生学习参考。

　　●who， whom， whose：

　　who： 主格， 在从句中作主语，在口语或非正式用法中作宾语; 只可指人

　　whom： 宾格，在从句中作宾语; 只可指人

　　whose： 属格，在从句中作定语，可指人也可指物。

　　I like the students who/that work hard. （主语）

　　All who heard the story were amazed. （代词如he， they， any， those， all， one等后多用who.）

　　Chaplin， for whom life had once been very hard， was a success as an actor. （宾语）

　　He‘s a man from whom we should learn.

　　= He’s a man （whom/who/that） we should learn from.

　　比较：He is the student whom you think to be worthy of your praise.

　　He is the student who you think is worth praising.

　　A child whose parents are dead is called an orphan.（指人）

　　I‘d like a room whose window faces south. （指物）

　　=I’d like a room of which the window faces south.

　　=I‘d like a room the window of which faces south.

　　There is a teapot shaped like a Chinese duck， out of whose mouth tea is supposed to come

　　关系代词作介词宾语：

　　关系代词在定语从句中用作介词宾语时， 介词可放于从句之首， 也可放于从句之末。 但以放于句首较为正式。（介词前置，必须注意不影响动词词组的含义。关系代词who 和 that 用作介词宾语时， 介词必须放在句末。）

　　This is the book for which you asked.

　　=This is the book （that/which） you asked for.

　　Do you know the person with whom I shook hands？= Do you know the person （whom/who/that） I shook hands with？

　　The beginning of agriculture was a big step in human progress with which nothing could compare until our information age.

　　In the dark street， there wasn’t a single person to whom she could turn for help.

　　Is this the factory to which you paid a visit last week？

　　Is this factory the one to which you paid a visit last week？

　　This is the girl whom they are looking after. （介词after与look构成固定词组，不可前置。look at， look for， look after， take care of等）