which引导的从句
引导限制性定语从句
A shop should keep a stock of those goods which sell best.
商店应存有最畅销的货物。
This is the family which is planning to move to the party.
这是要搬进城里的一家。
2. 引导非限制性定语从句。
（ 1 ）用来指代一个句子。
Internet is so interesting, which makes all possible happen.
因特网是如此有趣，它使任何事都有可能发生。
（ 2 ）用来指代句子的一部分。
When deep in thought, which he often was, he would forget all around him.
他常常陷入沉思，这时他就会忘掉周围的一切。
（ 3 ）如果要引导两个非限制性定语从句，第二个 which 前要加 and.
He bought a book, which was written by LuXun, and which he decided to give to his friend.
他买了本鲁迅写的书，他决定送给朋友。
3. 名词＋ of ＋ which （＝ of which ＋名词＝ whose + 名词）通常放在先行词的后面。
I'd like a room the window of which looks out over the sea. / I'd like a room of which the window looks out over the sea. / I'd like a room whose window looks out over the sea.
我要一间窗户面临大海的房间。
4. 介词＋ which 的替代作用。
（ 1 ）作时间状语替代 when 。
There used to be a time at which / during which （ = when ） the Chinese people struggled for freedom.
中国人曾有一段为自由而斗争的日子。
（ 2 ）作地点状语替代 where 。
This is the office in which （ = where ） I used to work.
这是我过去工作过的办公室。
（ 3 ）作原因状语替代 why 。
I'd like you to explain the reason for which （＝ why ） you were absent.
我想让你解释一下缺席的原因。
（ 4 ）作方式状语替代 that 或省略。
There are many ways in which （＝ that / 省略） we can solve the problem.
解决这个问题有很多方法。
5. which, when, where 关系词的选择。
关系副词 when 与 where 用于引导定语从句时，往往修饰句中表示地点或时间的名词。但是，有时候在表示时间或地点的名词后面却不能用 when 或 where ，而该用 which 或 that 。
The river where I used to swim is now seriously polluted.
（ where 在定语从句中作状语， where = in which = in the river ）我过去常去游泳的那条河现在已被严重地污染了。
I still remember the day when I first came to Beijing.
（ when 在定语从句中作状语， when = on which = on the day ）我仍然记得我第一次来北京的日子。
6. 引导非限制性定语从句关系代词 which, as 的选择。
关系代词 as 与 which 引导非限制性定语从句时可以用整个句子作为先行词，指代上文或下文所说的一件事。
He said he'd been working in the office for an hour, which / as was true.
他说他一直在办公室工作了一个小时，这是真的。
