英语教案-as引导定语从句扫描
As 引导定语从句扫描
在定语从句中,一般的从句关系代词是which、who、whom、that、 whose, 其代替主句中的人或物,在从句中做主语、宾语或定语。而学生在学习过程中,常会遇到as作为关系代词出现,做起题来,无从下手,就此笔者对as作为关系代词引导定语从句的情况做一归纳, 以供参考.
一、as引导限制性定语从句
主要结构有:
the same…as
as…as
such…as
so…as
主句中出现the same, as, such, so修饰先行词,需选择as做关系代词在定语从句中做主语或宾语。
1. It’s the same person as we wanted to find yesterday .
我们昨天要找的是同一个人。
2. Such girls as he knows are good at English .
他所认识的女孩都擅长英语。
3. Do you have such books as we like ?
你有我们喜欢那种书吗?
4. She will marry as healthy a man as she can find .
她将嫁给她能找到的任何一个有钱人。
5. There is so warm a house as we want to live in .
这里有如此暖和的房子,我们都想住在里面。
6. He has so difficult a problem , as none of us can solve .
他有如此难的一个问题,我们没有人能解决。
二、引导非限制性定语从句
⑴ as引导非限制性定语从句,指代整个主句内容,从句可置于句首,句中或句尾
1. As everyone knows ,China is a beautiful country with a long history .
每个人都知道,中国是一个有着悠久历史的美丽国家。
2. The earth , as we know , moves round the sun .
地球,我们都知道,围着太阳转。
3. Tom works hard and is willing to help others, as we all know.
汤母工作努力,并且乐于助人,这一点我们都知道。
⑵ 非限制性定语从句中的谓语为被动式时,常用as做主语
be said/known/announced/reported/mentioned/expected/discussed
1. Grammar , as has been said before, is not a set of dead rules.
语法,就像以前所说,不是一套死规则。
2. As is known to all , TaiWan is part of China .
⑶ as引导非限制性定语从句,有“如,似,正像”的含义,因此,下列句式多用as
as has been said above
如上所说
as anybody can see
正像每个人所看到的那样
as we had expected
《英语教案-as引导定语从句扫描》