胸英语-视若无睹
as引导定语从句时的特殊用法
关系代词as既可以引导限制性定语从句,也可以引导
非限制性定语从句。as可以在从
句中作主语、宾语或表语。
1. as引导限制性定语从句
as引导限制性定语从句, 置于先行词之后,与其词义关系密切,不可分割。如:
He
is such a good boy as everyone likes.他是大家都喜欢的好孩子。
Such machines as are used in our workshop are
made in China.我们车间使用的机器是中
国制造的。
as 常见搭配:
1)
such+(不定冠词+)名词+as引导的定语从句,意思是“像??一样的”。如:
The little boy realized that there was no such
a tank as he dreamed of after he got to the
museum.
那个小男孩儿到了博物馆后才知道没有他所想象的那种坦克。
2)
the same+名词+as引导的定语从句,意思是“同一类事物”。如:
Lao Li
bought the same computer as I did.
老李买的电脑跟我买的一模一样。
1.
as引导非限制性定语从句
as引导的非限制性定语从句,既可以放在主语之前,也可以放在主语之后。通常用于
下列句
型:as is know to all,as is said,as is reported,as
is announced,as we know,as I expected
如:
As
I expected, he got the first place again in this
mid-term examination.
正如我所预料的那样,他在这次期中考试中又得了第一名。
2.
as引导非限制性定语从句时与which的区别
1)
当非限制性定语从句置于主语之前时,只能用as。如:
As is known to
us, the moon travels round the earth.
2)
从句置于主语之后,且从句有否定词或表示否定意义时,只能用which。如:
Tom
was late for school this morning, which was
unexpected.
汤姆今天迟到了,这让人觉得意外。
He drinks a
lot every day, which his wife doesn’t like at all.
每天他都喝很多酒,他的妻子一点都不喜欢他这样。
3)
非限定性定语从句中出现expect , think , suppose
等表示猜测、想象、预料等时,
只能用as
She succeeded in her
doing the research work , as we expected .
4)固定搭配:suchthe same+as
Exercises:
1. The British are not familiar with different
cultures and other ways of doing things,
________is often the case
in other countries.
A) as B) what C) so D) that
2. ________might be expected, the
response to the question was very mixed.
A) As B) That C) It D) What
3. I hope all
the precautions against air pollution,
________suggested by the local government, will be
seriously
considered here.
A) after
B) while
C) as D) since
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