which I still never forget.
This is the day when I joined the party.
which he spent reading the books.
which makes machines.
This is the place which we once visited.
which I will never forget.
which I am looking for.
限制性定语从句与非限制性定语从句的区别：
All the students who study hard have passed.
) All the students ,who study hard have passed.
与主句关系密切，不用逗号 与主句关系不十分密切，用逗号与主句隔开译为汉语时，从句译在先行词前，与先行词用“的”连接 译为汉语时，从句放在主句后面关系代词
which(
关系代词代替宾语时可以省略 关系代词不能省略关系代词
which
先研究下面两个例句：
1.This elephant is like a snake, as /which everybody can see. =As everybody can see, this elephant is like a snake.
t pass the physics exam, which made his parents very angry. Tom
which
所代表的都是整个主句所表示的内容。但有两点不同之处：
引导的非限制性定语从句可位于主句的后面，也可位于主句的前面
which
引导的非限制性定语从句只能位于主句的后面，不能位于主句的前面。
引导的定语从句和主句的关系一般为一致关系，常译为“正如……”，“就像……”，而
which
引导的定语从句是对主句的评论。因此，在意思通顺的情况下，
which
。再如：
1.He was late again, as / which we had expected. =As we had expected, he was late again.
t been cleared for weeks, which makes it very dirty.
as)
3.The young man cheated his friend of much money, which was disgraceful.
as)
4.He takes exercise everyday, which has done a lot of good to his health.
as)
5.As has already been pointed out, English is rather difficult for a foreigner.
正如已经指出的那样，英语对于初学者说，是相当难学的。在
which
代替。如：
1.Such books as this are too difficult for beginners.
2.I live in the same building as he (does).
3.He knows as many people as are present at the meeting.
4.That day we all got up early as usual.
这一结构后面的定语从句的谓语动词通常用复数形式，跟定语从句所
近的那个复数名词在数上保持一致。如：
1. That is one of the books that are required for study at school.
2. This is one of the most wonderful novels that have been published since 1990.
3. She is one of the few persons who know Spanish .
4. This is one of the most famous plays that were written in the thirties,
the very
之类的限定语，后面定语从句的谓语动词则要用单数形式，这是因为定语从句在意义上修饰的是而不是那个复数名词。如：
1.He is the only one of the teachers who knows French in our school.(
the only one)
He is one of the teachers who know French in our school.(
the teachers)
2.This is the only one of the rooms that is free now. (
the only one)
This is one of the rooms that are free now. (
which
两者均可引导非限制性定语从句，有时可以互换，但下列情况多用
As we all know, the earth is round.
the same
Such books as you tell me are interesting. I have the same plan as you.
which
She has married again, as was expected. She has married again, which was unexpected.
which
She has been late again, as was expected.
Tom has made great progress, which m
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