inwhich釋義：

書中

例句：

You must return wheelchairs, other mobility aids, and other assistive devices to the passenger in the condition inwhich you received them.

歸還時輪椅，移動輔助裝置，或其它輔助裝置的狀態(tài)應(yīng)該與接收時一致。

onwhich釋義：

onwhich

例句：

She had moved from the wall of the garret. very near to the bench onwhich he sat.

那姑娘已離開閣樓的墻壁，走近了老人的長凳。

in which:在......里面；on which:在......的上面，或具體時間的某一天

on which 和 in which 都可以用來引導(dǎo)定語從句，修飾先行詞，區(qū)別在于介詞on/in 這取決于先行詞的搭配

比如:

I can't forget the day on which we had a party.這個句子，先行詞是day，原本的搭配是on the day.

I like the room in which there are many toys.這句話的先行詞是room，詞組搭配是in the room。

例句：

1.The school (that/which) he once studied in is very famous.

= The school in which he once studied is very famous.

2. 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.

固定搭配：

The plane may be several hours late, in which case there’s no point in our waiting. (固定搭配：in the case)

The little creature in which scientists are interested is known as ET.

(這里"be interested in"是詞組原因)

例題：

I can’t believe that the restaurant, ______ I have eaten such wonderful meal, is going to be close down. A. where B. at which C. about which

【解答】選B。這個是非限制性定語從句，at which在功能上等于where，但就本題而言只能選at which。因為at which I have eaten such wonderful meal是一個插入語，where固然可以引導(dǎo)，但是由于前面有了一個逗號，就只能用at which了?！拔译y以相信我曾經(jīng)在里面美美地吃過幾頓大餐的飯店就要關(guān)張了。”非限制性定語從句主要就是先行詞+逗號“，”+介詞+which或者是先行詞+逗號“，”+which，它和限定性定語從句的最顯著區(qū)別一個是有逗號，一個是非限制定語從句總有which。

in which:在......里面；on which:在......的上面，或具體時間的某一天

on which 和 in which 都可以用來引導(dǎo)定語從句，修飾先行詞，區(qū)別在于介詞on/in 這取決于先行詞的搭配

比如:

I can't forget the day on which we had a party.這個句子，先行詞是day，原本的搭配是on the day.

I like the room in which there are many toys.這句話的先行詞是room，詞組搭配是in the room。

例句：

1.The school (that/which) he once studied in is very famous.

= The school in which he once studied is very famous.

2. 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.

固定搭配：

The plane may be several hours late, in which case there’s no point in our waiting. (固定搭配：in the case)

The little creature in which scientists are interested is known as ET.

(這里"be interested in"是詞組原因)

例題：

I can’t believe that the restaurant, ______ I have eaten such wonderful meal, is going to be close down. A. where B. at which C. about which

【解答】選B。這個是非限制性定語從句，at which在功能上等于where，但就本題而言只能選at which。因為at which I have eaten such wonderful meal是一個插入語，where固然可以引導(dǎo)，但是由于前面有了一個逗號，就只能用at which了?！拔译y以相信我曾經(jīng)在里面美美地吃過幾頓大餐的飯店就要關(guān)張了?！狈窍拗菩远ㄕZ從句主要就是先行詞+逗號“，”+介詞+which或者是先行詞+逗號“，”+which，它和限定性定語從句的最顯著區(qū)別一個是有逗號，一個是非限制定語從句總有which。