Question

这个定语从句用which的情况是什么意思？高中英语

请用下边的例句解释下什么叫作介词宾语和作定语

Answer 1

您好，这两个例句的解释为：
1）Recently I bought a second-hand car, the price of which was reasonable.
这个句子其实是两个句子合并为主从句结构：
A）Recently I bought a second-hand car.
B）The price of the second-hand car was reasonable.
可以看出合并后，which 替代了A句的宾语（a second-hand car）。假如把 of which 从合并句中去掉，就变成了 Recently I bought a second-hand car, the price was reasonable. 此时会被判为（断句），因为是两个完整的分句，但没有任何的连词把两个句子串在一起。
要变为定语从句，通常会使用 whose 引导词变为 Recently I bought a second-hand car, whose price was reasonable. whose 这个引导词在定语从句中充当（定语），而 whose 是 who 的所有格形式，而 of 又是从属介词可以用来引导所有格，那么 whose price 就可以变成了 the price of which（of 起到了 price = which 的从属结构），此时的 of which 可以看作为（介词短语）作 the price 的后置定语，因为【这个的价格】，修饰 the price，而 which 又替代主句的（宾语），所以这个 of which 的（介词短语）实际上是（介词）+（主句的宾语）。
Recently I bought a second-hand car, the price of the second-hand car was reasonable.
= Recently I bought a second-hand car, whose price was rasonable.【whose 作定语】
= Recently I bought a second-hand car, the price of (which=the second-hand car) was reasonable.【假如没有了 which 替代主语的（宾语），定语从句结构就不存在了。】
这里的（介词宾语）概念和传统的（介词宾语）作不及物动词的宾语的概念是不一样的。比如 I dream of a big house. 这里的 of a big house 也是（介词宾语）充当不及物动词 dream 的宾语。

2）She might possibly come, in which case I'll tell you.
这里的 which 在从句中充当了定语，表示有选择性的，因为 case 有两种结果，一种是来，一种是不来，也就是不论来了，还是不来，这两种情况，不论哪一种发生了，我都会告诉你。
这个句子也可以分成三个句子：
A）She might possibly come.
B）I'll tell you in this case. (in this case = in the case that she comes = if she comes)
C）I'll tell you in that case. (in that case = in the case that she doesn't come = if she doesn't come)

which 作为定语，表示有限制范围的选择性，比如 Which one do you like? 所以 in which case = in this case + in that case 的选择性，所以 which 就变成了（定语）修饰 case 了。
这两种 which 的用法都是比较特殊的用法，因为 which 作为关系代词引导定语从句时，并不充当主语或是宾语，而是充当主句的一部分，或是充当定语的用法了。

Answer 2

1) 句意：最近我买了一辆二手车，它的价格很合理.
the price of which was reasonable 为非限制性定语从句,其中的 the price of which 相当于 and its price 或 and the price of it. 在关系代词which指代的是先行词car .
2) She might possibly come, in which case I'll tell you. 她有可能会来,那样的话我就告诉你一声。
in which case I'll tell you. 为非限制性定语从句, 从句中作介词宾语时只能用which

追问

句中它做了谁的定语？介词宾语是什么意思？解决成功必采纳

追答

介词宾语，就是放在介词后面的名词、名词短语、甚至宾语从句，或者一些代词。

1) 介词of， which 是介词of的宾语。

2）介词in ，  which 是介词in的宾语。

这两句话都是非限定性定语从句，非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，将非限定性定语从句放在句子中间，其前后都需要用逗号隔开。

关系代词which在非限制性定语从句，中所指代和修饰的可以是主句中的名词、形容词、短语、其他从句或整个主句，在从句中作主语、动词宾语、介词宾语或表语。