四、非限定性定语从句 Non-restrictive Attributive Clause

　　1. “位置形式”：紧接先行词，不用标点分割

　　e.g. I want to buy the house which has agarden.

　　2. 用逗号与主句隔开，修饰“主句全句或部分内容”，可置句末，中，首。

　　e.g. I want to buy the house, which has agarden.

　　The earth is round, which is known to all

　　As is known to all, the earth is round.

　　3. “先行词”

　　限定性： n. / n. phrase

　　e.g. He wears a red shirt which makes himlike a girl.

　　非限定性：1). n. / n. phrase

　　2). the sentence

　　e.g. He wears a red shirt, which makes himlike a girl.

　　“关系词的用法”

　　限定性：1).关系代词作从句宾语时可省

　　2). that可替who, whom, which(口)

　　e.g. This is the book( which/that) I boughtyesterday.

　　非限定性：1).关系词不能用that

　　2).不能替换，不能省(which, as)

　　e.g. I like the book, which I bought yesterday

　　Do you know Tom, whom we talked about?

　　She has to work on Sundays,which she doesn’t like.

小练习：用 which/that 填空

　　1. This book of yours, I finished reading last night, was interesting.

　　2. He said that he was invited, was a lie .

　　3. This is the first problem he met atthe beginning.

　　4. The only problem troubled him hasalready been solved.