in which, for which, on which, at which的不同用法 1)這些都是定語從句裡面，由which引導的定語從句，介詞提前。下面這些介詞的使用除了意思上的區別，具體是要以which引導的從句而定的。 ①in which可以翻譯成在……裡面 The school (that/which) he once studied in is very famous. = The school in which he once studied is very famous. ②for which可以翻譯成為了……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可以翻譯成在……的上面，或具體時間的某一天 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可以翻譯成在……裡面或在…… 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)當然第一點只是介詞作為基本意思的用法，還有一些固定搭配，得具體情況具體分析。 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"因為電影無聊而睡覺。) ⑤The little creature in which scientists are interested is known as ET. (這裡"be interested in"是片語原因) ⑥This is the book for which he is looking. (即等於This is the book which he is looking for，這主要是因為look for 這一短語) 關係副詞與“介詞+which”的區別 引導定語從句時where與in which有時可互換，有時不能互換，注意以下幾點： 一、關係副詞與“介詞+which”互換的情形 當“介詞+ which”在定語從句中作時間、地點和原因狀語時，可以用相應的關係副詞when, where和why來替換。 1. when根據情況可以等於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根據情況可以等於in which, at which, on which等。如： This is the hotel where ( =in which / at which) they were staying. 這就是他們當時住的旅店。3. 關係副詞若要換成“介詞+which”只能是for which。如： The reason why (=for which) I came here was to be with my family. 我到這裡來的原因是要跟我的家裡人在一起。
in which, for which, on which, at which的不同用法 1)這些都是定語從句裡面，由which引導的定語從句，介詞提前。下面這些介詞的使用除了意思上的區別，具體是要以which引導的從句而定的。 ①in which可以翻譯成在……裡面 The school (that/which) he once studied in is very famous. = The school in which he once studied is very famous. ②for which可以翻譯成為了……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可以翻譯成在……的上面，或具體時間的某一天 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可以翻譯成在……裡面或在…… 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)當然第一點只是介詞作為基本意思的用法，還有一些固定搭配，得具體情況具體分析。 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"因為電影無聊而睡覺。) ⑤The little creature in which scientists are interested is known as ET. (這裡"be interested in"是片語原因) ⑥This is the book for which he is looking. (即等於This is the book which he is looking for，這主要是因為look for 這一短語) 關係副詞與“介詞+which”的區別 引導定語從句時where與in which有時可互換，有時不能互換，注意以下幾點： 一、關係副詞與“介詞+which”互換的情形 當“介詞+ which”在定語從句中作時間、地點和原因狀語時，可以用相應的關係副詞when, where和why來替換。 1. when根據情況可以等於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根據情況可以等於in which, at which, on which等。如： This is the hotel where ( =in which / at which) they were staying. 這就是他們當時住的旅店。3. 關係副詞若要換成“介詞+which”只能是for which。如： The reason why (=for which) I came here was to be with my family. 我到這裡來的原因是要跟我的家裡人在一起。