如题所述
in which, for which, on which, at which的不同用法
1)这些都是定语从句里面，由which引导的定语从句，介词提前。下面这些介词的使用除了意思上的区别，具体是要以which引导的从句而定的。
①in which可以翻译成在……里面
The school (that/which) he once studied in is very famous.
= The school in which he once studied is very famous.
②for which可以翻译成为了……目的
Tomorrow I will bring here a magazine (that/which) you asked for.
= Tomorrow I will bring here a magazine for which you asked.
③on which可以翻译成在……的上面，或具体时间的某一天
I have a dresser in my bedroom, which there are many cosmetics on.
= I have a dresser in my bedroom on which there are many cosmetics.
④at which可以翻译成在……里面或在……
The dumpling House which he often has dumplings at is very popular.
= The dumpling House is very popular, at which he often has dumplings.
2)当然第一点只是介词作为基本意思的用法，还有一些固定搭配，得具体情况具体分析。
①The plane may be several hours late, in which case there’s no point in our waiting.
(固定搭配：in the case)
②The speaker paused to examine his notes, at which point a loud crash was heard.
(固定搭配：at the point)
③Ten years of hard work changed her greatly, for which reason he could hardly recognize her at first sight.
(固定搭配：for the reason)
④The film at which I fell asleep was very boring.
(Here "at which" is based on "fell asleep at the film"因为电影无聊而睡觉。)
⑤The little creature in which scientists are interested is known as ET.
(这里"be interested in"是词组原因)
⑥This is the book for which he is looking.
(即等于This is the book which he is looking for，这主要是因为look for 这一短语)
关系副词与“介词+which”的区别
引导定语从句时where与in which有时可互换，有时不能互换，注意以下几点：
一、关系副词与“介词+which”互换的情形
当“介词+ which”在定语从句中作时间、地点和原因状语时，可以用相应的关系副词when, where和why来替换。
1. when根据情况可以等于in which, at which, on which等。如：
The day when (=on which) she arrived was Thursday. 她到的那天是星期四。
2. where根据情况可以等于in which, at which, on which等。如：
This is the hotel where ( =in which / at which) they were staying. 这就是他们当时住的旅店。
3. 关系副词若要换成“介词+which”只能是for which。如：
The reason why (=for which) I came here was to be with my family. 我到这里来的原因是要跟我的家里人在一起。
1)这些都是定语从句里面，由which引导的定语从句，介词提前。下面这些介词的使用除了意思上的区别，具体是要以which引导的从句而定的。
①in which可以翻译成在……里面
The school (that/which) he once studied in is very famous.
= The school in which he once studied is very famous.
②for which可以翻译成为了……目的
Tomorrow I will bring here a magazine (that/which) you asked for.
= Tomorrow I will bring here a magazine for which you asked.
③on which可以翻译成在……的上面，或具体时间的某一天
I have a dresser in my bedroom, which there are many cosmetics on.
= I have a dresser in my bedroom on which there are many cosmetics.
④at which可以翻译成在……里面或在……
The dumpling House which he often has dumplings at is very popular.
= The dumpling House is very popular, at which he often has dumplings.
2)当然第一点只是介词作为基本意思的用法，还有一些固定搭配，得具体情况具体分析。
①The plane may be several hours late, in which case there’s no point in our waiting.
(固定搭配：in the case)
②The speaker paused to examine his notes, at which point a loud crash was heard.
(固定搭配：at the point)
③Ten years of hard work changed her greatly, for which reason he could hardly recognize her at first sight.
(固定搭配：for the reason)
④The film at which I fell asleep was very boring.
(Here "at which" is based on "fell asleep at the film"因为电影无聊而睡觉。)
⑤The little creature in which scientists are interested is known as ET.
(这里"be interested in"是词组原因)
⑥This is the book for which he is looking.
(即等于This is the book which he is looking for，这主要是因为look for 这一短语)
关系副词与“介词+which”的区别
引导定语从句时where与in which有时可互换，有时不能互换，注意以下几点：
一、关系副词与“介词+which”互换的情形
当“介词+ which”在定语从句中作时间、地点和原因状语时，可以用相应的关系副词when, where和why来替换。
1. when根据情况可以等于in which, at which, on which等。如：
The day when (=on which) she arrived was Thursday. 她到的那天是星期四。
2. where根据情况可以等于in which, at which, on which等。如：
This is the hotel where ( =in which / at which) they were staying. 这就是他们当时住的旅店。
3. 关系副词若要换成“介词+which”只能是for which。如：
The reason why (=for which) I came here was to be with my family. 我到这里来的原因是要跟我的家里人在一起。
温馨提示：答案为网友推荐，仅供参考
第1个回答 2024-02-17
"which"用在定语从句中的情况通常包括以下几种：
1. 先行词是人：当先行词是指人的名词时，"which"可以用来引导定语从句，尤其是在非限制性定语从句中。例如：
- The woman which you met at the party is my sister.
（你在派对上见到的那个女人是我的姐姐。）
2. 先行词是物：当先行词是指物的名词时，"which"也可以用来引导定语从句。例如：
- The book which you gave me is very interesting.
（你给我的那本书很有趣。）
3. 先行词被序数词或形容词最高级修饰：当先行词被序数词或形容词最高级修饰时，"which"常常用来引导定语从句。例如：
- The tallest building which stands in the city is the library.
（这座城市里最高的建筑是图书馆。）
4. 先行词既有人也有物：在某些情况下，先行词可能同时指人或者物，这时"which"也可以用来引导定语从句。例如：
- The man and the book which you mentioned are both very important.
（你提到的那个人和那本书都很重要。）
5. 非限制性定语从句：在非限制性定语从句中，"which"用来提供额外信息，不影响主句的意思。例如：
- My car, which broke down on the way to work, is being repaired.
（我的车，在路上去上班的时候抛锚了，正在修理。）
6. 定语从句中缺少主语或宾语：如果定语从句中的主语或宾语缺失，可以使用"which"来引导从句并指代先行词。例如：
- The car which is parked outside is mine.
（停在外面的那辆车是我的。）
需要注意的是，"which"只能用于限制性定语从句中，而不是非限制性定语从句。在非限制性定语从句中，我们通常使用"who"（指人）或"that"（指物）来引导从句。此外，"which"引导的定语从句中的逗号也是必要的，以区分限制性和非限制性定语从句。本回答被网友采纳
1. 先行词是人：当先行词是指人的名词时，"which"可以用来引导定语从句，尤其是在非限制性定语从句中。例如：
- The woman which you met at the party is my sister.
（你在派对上见到的那个女人是我的姐姐。）
2. 先行词是物：当先行词是指物的名词时，"which"也可以用来引导定语从句。例如：
- The book which you gave me is very interesting.
（你给我的那本书很有趣。）
3. 先行词被序数词或形容词最高级修饰：当先行词被序数词或形容词最高级修饰时，"which"常常用来引导定语从句。例如：
- The tallest building which stands in the city is the library.
（这座城市里最高的建筑是图书馆。）
4. 先行词既有人也有物：在某些情况下，先行词可能同时指人或者物，这时"which"也可以用来引导定语从句。例如：
- The man and the book which you mentioned are both very important.
（你提到的那个人和那本书都很重要。）
5. 非限制性定语从句：在非限制性定语从句中，"which"用来提供额外信息，不影响主句的意思。例如：
- My car, which broke down on the way to work, is being repaired.
（我的车，在路上去上班的时候抛锚了，正在修理。）
6. 定语从句中缺少主语或宾语：如果定语从句中的主语或宾语缺失，可以使用"which"来引导从句并指代先行词。例如：
- The car which is parked outside is mine.
（停在外面的那辆车是我的。）
需要注意的是，"which"只能用于限制性定语从句中，而不是非限制性定语从句。在非限制性定语从句中，我们通常使用"who"（指人）或"that"（指物）来引导从句。此外，"which"引导的定语从句中的逗号也是必要的，以区分限制性和非限制性定语从句。本回答被网友采纳
