急需一些定語從句的知識（詳細，具體一點），謝謝！！

熱心網友

　1,在介詞后只有which,不用that，如I like the house around which there are plenty of trees;2,既代人又代物的，用that,不用which;3,被修飾詞前有every,only,any,some,almost,nearly等詞時，只用that。 定語從句的關系詞有很多，而且用法也很復雜，下面將幾個關系詞的"使用權限"進行歸納以使同學們掌握學習。 　　一、只能用that,不能用which, who 的幾種情況: 　　1。先行詞是人和物 　　The person and his dog that were killed in the accident were buried。 　　The man and his school that you told me are very interesting。 　　2。先行詞是不定代詞anything, something, everything, nothing, all, the one 等 　　Has everything that can be done been done? 　　All that you told me was difficult to understand。 　　3。先行詞被最高級修飾 　　It is the longest film that I have seen in my life。 　　4。先行詞被序數詞修飾 　　It's the first time that I've been to Beijing。 　　The first stamp that was invented appeared in England。 　　5。先行詞被just ,very, only等強調詞語所修飾 　　It's the very house that I want to buy。 　　Only the vegetables that haven't been polluted are safe to eat。 　　二、只能用which, who,不能用that的兩種情況: 　　1。非限制性定語從句 　　The Changjiang River, which is the third longest river in the world, lies in China。 　　Do you know Tom, who used to be the headmaster of this school? 　　2。整句話當先行詞 　　It rained a lot, which made a flood happen。 　　He tore my photo, whichmademeangry。三、只能用as,不能用which,that,who的兩種情況:1。先行詞被such,thesame修飾I'veneverheardofsuchaterribleearthquakeasyoutoldme。對比:It'ssuchaterribleearthquakethatmanypeoplewerekilled。分析:定語從句的動詞和先行詞有動賓關系,如上面第一句應用as;結果狀語從句應用such。。。that句型,表示"如此……以至于",如上面第二句。2。整句話當先行詞,且從句有"正如……所知道/預料的一樣"之意TaiwanbelongstoChina,asweknow。Aseverybodycansee,wehaveagoodharvestinfruitthisyear, 與which以整句話當先行詞的區別:1。which引導的句子有"這就使……"造成某些客觀后果的意思,而as引導的句子都含有主觀認識的動詞:如know,see,expect之類。 引導的定語從句可放在句首,這是唯一能放在先行詞前的定語從句。當然,它也可放在先行詞后。而which卻只能放在先行詞后,不能放在句首。四、that,which,who等關系代詞在作定語從句中的賓語時可省略。如:Thisisthehouse(that/which)mygrandparentsbuilttwentyyearsago。Theperson(who/whom/that)youjustspoketoisourheadmaster。五、只能用when,where,不能用that,which的情況:關系代詞在從句中作狀語。例如作live,work,study等不及物動詞的狀語。試比較:I'llneverforgetthedaysthatwespenttogether。I'llneverforgetthedayswhenwestudiedtogether。 　　He enjoyed the place that/ which he visited a week ago in Wuhan。 　　He enjoyed the place where he stayed a week ago in Wuhan。1,在介詞后只有which,不用that，如I like the house around which there are plenty of trees;2,既代人又代物的，用that,不用which;3,被修飾詞前有every,only,any,some,almost,nearly等詞時，只用that。