标签： 杂谈
要掌握"介词+关系代词"引导的定语从句，我们要注意以下五点：
1．某些在从句中充当时间，地点或原因状语的"介词+关系词"结构可以同关系副词when 和where 互换。例如：
This is the house in which I lived two years ago. →This is the house where I lived two years ago. 这就是我两年以前住过的那间房子。
Do you remember the day on which you joined our club? →Do you remember the day when you joined our club? 你还记得你加入我们俱乐部的那一天吗？
2． “介词 + which / whom ”构成的定语从句。
介词后只能用which / whom，不用who / that，但当介词放在后面时，在限定性定语从句中，可用that代替which / whom，并且that可省略。在非限定性定语从句中只能用关系代词which / whom。例如：
我向你请教的那个问题现在已经解决了。
【误】The problem about that I consulted you has now been solved. （错）
【正】 The problem about which I consulted you has now been solved. （对）
【正】The problem I consulted you about has now been solved. （对）
3. “名词+ 介词+which / whom”引导的定语从句，例如：
We had a meeting the purpose of which was completely unclear. 我们开了一个会，会议的内容还不完全清楚。
He mentioned a book of which the title has slipped my memory. 他提到了一本书，可是书名我记不起来了。
4. 在非限定性定语从句中of which / whom 可用来修饰不定代词 all, each, one, many, much, more, most, any, some, a few, a little, none, both, several, enough the latter, the former等。例如：
There are 103 elements found in nature, most of which are metals.自然界中发现了103种金属元素，大都是金属。
We are all familiar with flashlights, portable radios and car lighting systems, all of which use batteries as their source power. 我们所熟悉的手电筒，袖珍收音机和汽车照明系统，他们都是用蓄电池作为电源的。
5. “介词+ which +名10. 词 ”引导的定语从句。
which是一个代表所有关系的关系代词，可用来代表一个名词/代词或句子的一部分，但更多地是来代表整个句子。其中的名词通常是一个抽象名词，如：case, fact, state, time, point等。例如：
He may be late, in which case we ought to wait for him. 他可能要迟到，因此我们应该等他。
He lost his temper, at which point I decided to go home. 他发脾气了，这时我决定回家。
标签： 杂谈
要掌握"介词+关系代词"引导的定语从句，我们要注意以下五点：
1．某些在从句中充当时间，地点或原因状语的"介词+关系词"结构可以同关系副词when 和where 互换。例如：
This is the house in which I lived two years ago. →This is the house where I lived two years ago. 这就是我两年以前住过的那间房子。
Do you remember the day on which you joined our club? →Do you remember the day when you joined our club? 你还记得你加入我们俱乐部的那一天吗？
2． “介词 + which / whom ”构成的定语从句。
介词后只能用which / whom，不用who / that，但当介词放在后面时，在限定性定语从句中，可用that代替which / whom，并且that可省略。在非限定性定语从句中只能用关系代词which / whom。例如：
我向你请教的那个问题现在已经解决了。
【误】The problem about that I consulted you has now been solved. （错）
【正】 The problem about which I consulted you has now been solved. （对）
【正】The problem I consulted you about has now been solved. （对）
3. “名词+ 介词+which / whom”引导的定语从句，例如：
We had a meeting the purpose of which was completely unclear. 我们开了一个会，会议的内容还不完全清楚。
He mentioned a book of which the title has slipped my memory. 他提到了一本书，可是书名我记不起来了。
4. 在非限定性定语从句中of which / whom 可用来修饰不定代词 all, each, one, many, much, more, most, any, some, a few, a little, none, both, several, enough the latter, the former等。例如：
There are 103 elements found in nature, most of which are metals.自然界中发现了103种金属元素，大都是金属。
We are all familiar with flashlights, portable radios and car lighting systems, all of which use batteries as their source power. 我们所熟悉的手电筒，袖珍收音机和汽车照明系统，他们都是用蓄电池作为电源的。
5. “介词+ which +名10. 词 ”引导的定语从句。
which是一个代表所有关系的关系代词，可用来代表一个名词/代词或句子的一部分，但更多地是来代表整个句子。其中的名词通常是一个抽象名词，如：case, fact, state, time, point等。例如：
He may be late, in which case we ought to wait for him. 他可能要迟到，因此我们应该等他。
He lost his temper, at which point I decided to go home. 他发脾气了，这时我决定回家。