Unit 2 Growing pains
Section Ⅱ Grammar
定语从句(Ⅱ)
一、“介词＋关系代词”引导的定语从句
要掌握“介词＋关系代词”引导的定语从句，我们要注意以下三点：
1．关系代词的选用
在介词后作宾语的关系代词一般只有which，whose和whom。如先行词是物，引导词用which；如先行词是人，则引导词用whom；whose适用于两者，但要注意whose后面有它所修饰的名词或代词，因为whose在定语从句中起到形容词的作用。
This is the ship on which I went to Shanghai.
这是我去上海所乘坐的船。
This is the student for whom I bought the book.
这是我给买书的那个学生。
The boss in whose firm I worked for 10 years retired yesterday.
我供职十年的那家公司的老板昨天退休了。
2．介词的选用
“介词＋关系代词”中的介词主要有以下三种确定方法：
(1)根据定语从句中的谓语动词或形容词来选用介词。
The fellow to whom I spoke made no answer at first.(speak to)
和我说话的那个人起先没有回答。
The West Lake，for which Hangzhou is famous，is a beautiful place.(be famous for)
西湖是个美丽的地方，杭州以此而闻名。
(2)根据先行词来确定介词。
In his room，we saw a big table on which there were all kinds of books.(on a big table)
