定語(yǔ)從句概要：（這是有關(guān)定語(yǔ)從句的精要介紹,涵蓋了有關(guān)定語(yǔ)從句的各個(gè)方面,供參考：） 引導(dǎo)定語(yǔ)從句的關(guān)聯(lián)詞包括關(guān)系代詞和關(guān)系副詞.關(guān)系代詞有that,which,whose,who,whom,as；關(guān)系副詞有when,where,why.關(guān)系代詞和關(guān)系副詞在定語(yǔ)從句中都充當(dāng)一定的句法成份.關(guān)系代詞在從句中充當(dāng)動(dòng)詞的賓語(yǔ)時(shí)一般可以省略.關(guān)系代詞的選用比較復(fù)雜,受下列條件的制約：(1) 要看先行詞是指人還是指物,(2) 要看關(guān)系代詞在從句中句法功能,(3) 要看定語(yǔ)從句是限定性的還是非限定性的.在定語(yǔ)從句中充當(dāng)?shù)某煞?↓ 用于限定性或非限定性從句 只用于限定性從句 指人 指物 指人或指物 主語(yǔ) who which that 賓語(yǔ) whom which that 謂語(yǔ) whose whose (of which) That 只能用在限定性定語(yǔ)從句中,而who,whom,which,which 既可用于限定性定語(yǔ)從句中,也可用于非限定性定語(yǔ)從句.I know that he is a man who means what he says.I know that he is a man that means what he says.【我知道他是一個(gè)守信用的人.】 The gentleman whom she met addressed her with courtesy.The gentleman that she met addressed her with courtesy.【她遇到的那位先生很有禮貌地向她打了招呼.】 The gentleman she met addressed her with courtesy.（在從句中充當(dāng)動(dòng)詞賓語(yǔ)的關(guān)系代詞,可以省略.） The watch which was lost has been found.The watch that was lost has been found.【丟了的表找到了.】 Here is the material which you need.(注：現(xiàn)代美語(yǔ)中不允許這樣用) Here is the material that you need.Here is the material you need.【你要的材料在這兒了.】 You are the only one whose advice he might listen to.他也就是聽(tīng)你的話吧.關(guān)系副詞的選用相對(duì)來(lái)說(shuō)比較簡(jiǎn)單,如果先行詞是表示時(shí)間的名詞,如time,day 等,則用when,如先行詞為表示地點(diǎn)的名詞,如place,house,area 等等,則選用where.如果先行詞為reason 則選用why I will never forget the mountain village where I spent my childhood.I will never forget the mountain village in which I spent my childhood.我永遠(yuǎn)也不會(huì)忘記我度過(guò)童年的那個(gè)小山村.I don’t know the reason why he did that.I don’t know the reason for which he did that.【我不知道他為什么這么做.】 當(dāng)先行詞是all,something,nothing 等不定代詞時(shí),或者先行詞的前面有first,last,only,few,much,some,any,no 等詞修飾時(shí),或者先行詞的前面有最高級(jí)修飾時(shí),一般只用that 而不用which 來(lái)引導(dǎo)定語(yǔ)從句：I have explained everything that I can to you.I have explained everything I can to you.【我已經(jīng)盡一切可能把事情向你解釋得一清二楚.】 具體詳情請(qǐng)上百度百科查詢.從句—請(qǐng)點(diǎn)擊此連接就可查詢各種從句的具體解釋 http://baike.baidu.com/view/138129.htm