as用法知多少

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作者:贾利民
同学们在课文中发现as这个词连接了两个句子, 到底它都有哪些用法呢? 现在我们就将其用法小结如下:
1. as作连词
1)作"当......时候"解时,引导时间状语从句,强调两个动作同时发生,或某事一发生,另一事立即发生。如:She sang a song as she walked. 她边走边唱着一首歌。
2)作"因为"、"由于"解时,引导原因状语从句,与because相近。如:I must stop writing, as I have a lot of work to do. 我必须停笔,因为我有许多工作要做。
3)作"正如"、"按照""像......一样"解,引导方式或比较状语从句。如:
As you know, I don't like swimming at all. 正如你所知道的,我一点儿也不喜欢游泳。(方式状语从句)
My brother is as tall as I am. 我弟弟和我一样高。(比较状语从句)
提示:as经常用在as... as possible结构中,表示"尽可能地......"。如:as quickly as possible尽可能快,as much as possible尽可能多。
4)作"尽管"、"虽然"解,通常用于倒装句式,引导让步状语从句。如:
Old as he was, he still worked very hard. 他虽然年龄大了,但工作还很努力。
2. as用作介词。作"充当"、"作为"解。如:
As a party member, I must be strict with myself. 作为一名党员,我必须严格要求自己。
She is famous as a singer. 她作为一名歌手而闻名。
3. as构成一些固定搭配。
1)as well as 同,和......一样; 如: My parents often go for a walk after supper as well as my brother. 我父母经常晚饭后散步,我哥哥也是。
2)as soon as 一......就......
I will call you as soon as I get to the station. 我一到车站就会给你打电话。


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