三、"介词＋关系代词"引导的定语从句

1．关系代词的选定

如果先行词指事(物)，关系代词就用which，指人用whom。

This is the classroom in which we studied last year.

这就是我们去年学习用的教室。

This is the pilot for whom I bought a camera.

这个就是我给他买照相机的飞行员。

2．介词的选定

(1)根据先行词来选用介词。

The reason for which I came here is that I want to get your help.我来这儿的原因是我想得到你的帮助。

The farm on which I once worked has taken on a new look.我曾经工作过的农场呈现出一派新景象。

(2)根据定语从句中的谓语动词或形容词来选用介词。

The person to whom this letter was addressed died three years ago.这封信的收信人三年前就去世了。

China is a beautiful country of which we are greatly proud.中国是个我们为之感到非常骄傲的美丽国家。

The colourless gas without which we cannot live is called oxygen.

这种无色的、离了它我们无法生存的气体就是氧气。

(3)根据句意确定介词。

注意：很多情况下关系副词可以用"介词＋which/whom"来代替。

The day when I met the famous pop star was the greatest day of my life.＝The day on which I met the famous pop star was the greatest day of my life.

见到这位著名歌星的那天是我一生中最重要的日子。

This is a hall where the medical conference will be held.＝This is a hall in which the medical conference will be held.这是将召开医学会议的礼堂。

用适当的关系代词或关系副词填空

1．Many westerners who/that come to China cook much less than in their own countries once they realize how cheap it can be to eat out.(2018·浙江)

2．The government started a soil­testing program that/which gives specific fertilizer