關於which的用法及解釋
which的用法在英語學習中是比較重要的一個知識點，重要就說明必須要掌握。接下來小編在這裏給大家帶來which的用法，我們一起來看看吧!
which的用法
1、在後置的非限制性定語從句中代替上文出現的事物或情況(單數或複數)。
2、在問句中作爲疑問代詞，在名詞從句中作爲連接代詞用，其含義爲“哪個、哪些”。
3、如果非限制性定語從句的先行詞不是指主句內容，而是指具體的人、時間、地點，則不用which。
一、關係代詞that 和which 在定語從句中作主語和賓語，放在先行詞和定語從句之間，起聯繫作用。指物時，一般情況下可互換。如： Here is the pen that/which you lost yesterday.(that/which 指物作賓語) A plane is a machine that/which can fly.(that/which 指物，作主語) He is the most careful boy that I know.(that 指人,作賓語) The man that works in this room is a chemist.(that 指人,作主語)
二、that,which 在從句中作主語時，不能省略。作賓語時在口語中和非正式問題中經常省略。如上例1 和中的that,which 都可省略。
三、關係代詞在主語從句中作主語時，從句的謂語動詞的人稱和數須和先行詞一致。 Wheat is a plant that/which is grown in the north of China.
四、在定語從句中，關係代詞that 和which 指物時，一般沒有區別，但下列幾種情況中不能互換：
只能用that 的情況：
a)先行詞爲 all,everything,nothing,anything,little 等不定代詞時(something 後也可用which)： Is there anything (that) I can do for you in town? That’s all (that) I know.
b) 先行詞被序數詞所修飾時： The first thing (that) we should do is to work out a plan.
c) 先行詞被形容詞最高級所修飾時： This is one of the most exciting football games (that) I have ever seen. The nanjing yangtse river bridge is the longest bridge (that) they have ever seen.
d) 先行詞 被only,very,no,any,same,little,one of 等詞所修飾時： This is the only thing (that) we can do now. He gave me the same pen (that) he borrowed from me. Do you have any books that were written by Lu Xun? This is the very book (that) I want to read.
e) 當先行詞中既有人又有物時： The man and the car (that) you want to see are all here. 你相見的人和車都在這裏。
f) that 可指人，which 則不能： Who is the man that is reading the newspaper over there?
g) 在 “the time when”等結構和某些時間狀語中，when 常被that 代替，而且that 往往省略： I may leave here any time I want to. During the time I was there I visited him twice.
h)way 後面可根由that 引導的定語從句，但that 一般都省略： That was the way she looked after us.
在下列情況中，只能用which:
a) 放在介詞後面做介詞賓語時： This is the question about which we’ve had so much discussion. 但是，如把介詞放在從句的後部，這時which 就可換爲that 並常省略。如上例可改爲： This is the question (that) we’ve had so much discussion about.
b) 在非限制性定語從句，無論指物指人，都不能用that。指物時，只能用which 和其他關係代詞。如： All the books there,which have beautiful pictures in them,were written by him.
which的相關解釋
pron.哪一個; 哪一些; 哪個; 那，指前面提到的事物
adj.哪一個; 哪一些;
which與that的用法區別
兩者都可指物，常可互換。其區別主要在於：
1. 引導非限制性定語從句時，通常要用which：
The current, which is very rapid, makes the river dangerous. 水流湍急，使這條河很危險。
He has to work on Sundays, which he doesn’t like. 他得在星期天工作，他是不喜歡這樣的。
The London team, which played so well last season, has done badly this season. 倫敦隊上一個季度打得很好，這個季度卻打得很差。
2. 直接放在介詞後作賓語時，通常要用which：
She may be late, in which case we ought to wait for her. 她可能晚到，那樣我們就要等等她。
The documents for which they were searching have been recovered. 他們找尋的文件已找到了。
This morning some port wine came, for which I have to thank you. 今天早上送來一些波爾圖葡萄酒，爲此我得向你道謝。
注：有時“介詞+which”引導的定語從句可以轉換成“介詞+which+不定式”結構：
He had only the long nights in which he could study. =He had only the long nights in which to study. 他只有漫漫長夜可用來學習。
He had a couple of revolvers with which he could defend himself.= He had a couple of revolvers with which to defend himself. 他只有一兩把手用來自衛。
3. 當先行詞是下列不定代詞或被它們修飾時much, little, none, all, few, every(thing), any(thing), no(thing) 等時，通常用that：
All that she lacked was training. 她缺的只是訓練。
Have you everything that you need? 你需要的東西都有了嗎?
The sleeping man’s subconscious mind retained everything that was said around him. 這位酣睡的人頭腦的下意識能記住他周圍的人說的話。
She would never do anything that was not approved of by her parents. 她父母不贊同的事她絕不會做。
4. 當先行詞有the very, the only, the same 等修飾時，通常用that：
This is the only example that I know. 我知道的例子只有這一個。
Those are the very words that he used. 那是他的原話。
5. 當先行詞有形容詞最高級或序數詞(包括last, next等)等修飾時，通常用that：
This is the best dictionary that I’ve ever used. 這是我用過的最好的詞典。
The first thing that you should do is to work out a plan. 你應該做的第一件事是訂個計劃。
6. 當關系代詞在定語從句中用作表語時，通常用that：
China is not the country (that) it was. 中國已不數去的中國了。
7. 當先行詞是一個既指人又指物的並列詞組時，通常用that：
They talked about the persons and things that most impressed them. 他們談論了使他們印象最深的人和事。
8. 當要避免重複時：
Which is the course that we are to take? 我們選哪門課程?
which的例句
lived on an invalidity pension which came as a weekly giro.
他靠每週領取的作爲病殘養老金的直接轉賬救濟支票過日子。
ticians want a lap-dog press which will uncritically report their propaganda.
政客們想要的是不問是非、甘爲他們搞宣傳的哈巴狗一樣的新聞媒體。
were in the same college, which was male-only at that time.
我們那時在同一所學院，當時只招男生。
