介詞 + 關(guān)系代詞”引導(dǎo)的定語(yǔ)從句
介詞加關(guān)系代詞引導(dǎo)的定語(yǔ)從句要注意以下幾點(diǎn)：
1．“介詞 + 關(guān)系代詞”引導(dǎo)的定語(yǔ)從句時(shí),介詞的賓語(yǔ)只能用which（指物）和whom（指人）,即：介詞+which/whom.不能用that 和who.
　e.g. This is the teacher from whom we’ve learned a lot. 這就是從他那里我們學(xué)了很多東西的老師.
　　Great changes have taken place in the city in which we live. 　我們所居住的城市發(fā)生了巨大的變化.
2．有時(shí)介詞也可放在從句的末尾,這時(shí)關(guān)系代詞可用which/that(指物),who/whom/that（指人）,也可以省略.
e.g. The situation (which/that ) we had got into was very dangerous. 我們當(dāng)時(shí)的處境很危險(xiǎn).
　The man (whom/who/that) you were talking to just now is my English teacher. 你剛剛和他談話的那個(gè)人是我的英語(yǔ)老師.
3．當(dāng)定語(yǔ)從句中的謂語(yǔ)動(dòng)詞短語(yǔ)是固定搭配,不可分割時(shí),那么動(dòng)詞短語(yǔ)中的介詞不能前置.
　　e.g. This is the pen which I’m looking for. 這是我正在找的那支鋼筆.
　　　　不能寫成：This is the pen for which I’m looking.
4．定語(yǔ)從句也可由“名詞/代詞/數(shù)詞+介詞+which/whom”引出.
　e.g. That old man has two sons, one of whom is a doctor. 那個(gè)老人有兩個(gè)兒子,其中一個(gè)是醫(yī)生.
　The house, the windows of which ( = whose windows = of which the windows) were damaged, has now been repaired. 窗子遭破壞的那棟房子現(xiàn)在已經(jīng)修好了.
5．引導(dǎo)定語(yǔ)從句的關(guān)系副詞(when, where, why) 可以用“介詞+關(guān)系代詞”代替.
　　e.g. I’ll never forget the day when I joined the party. (when= on which). 我永遠(yuǎn)都不會(huì)忘記入黨的日子.
　　　The factory where my father works is in the east of the city. (where = in which). 父親工作的那家工廠在城東.
　　None of us know the reason why Tom was absent from the meeting. (why = for which). 我們都不知道湯姆缺席會(huì)議的原因.
6．“復(fù)合介詞短語(yǔ)+which”引導(dǎo)的定語(yǔ)從句,常與先行詞用逗號(hào)隔開,而且定語(yǔ)從句常用倒裝語(yǔ)序.
　　e.g. He lived in a big house, in front of which stood a big tall tree.他住在一幢大房子里,房前有一棵大樹.