Unit 2 Growing painsSection 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)在他的屋子里，我看见一张大桌子，上面放着各种书。Yesterday we had the meeting at which we d iscussed many problems.(at the meeting)昨天我们开了个会，会上我们讨论了许多问题。(3)根据定语从句所表达的意义来确定介词。Air，without which man can't live，is really important.空气确实太重要了，没有它人类就不能生存。In front of the house Tom is planting a tree，under which he will be able to sit and read some day.汤姆正在屋前种一棵树，将来有一天他将能坐在这树下看书。3．介词的位置介词一般放在关系代词 which，whose 和 whom 之前，但也可放在原来的位置上。The house in which we live is not large.＝The house (which/that)we live in is not large.我们住的房子不大。This is the man from whom I learned the news.＝This is the man(that/whom)I 1learned the news from.这就是告诉我消息的那个人。注意：介词和从句...
