简单来说,as..as 中间加形容词副词的原形 表示两个事物一样。。。在肯定句中不能用so ...as句型 而not as....as和 not so... as可以互换 中间加形容词副词的原形 表示两个事物中一个事物不如另一个。。。 详细说, as...as的用法
as...as意为"和……一样",表示同级的比较.使用时要注意第一个as为副词,第二个as为连词.其基本结构为:as+ adj./ adv.+as.例如:
(1)This film is as interesting as that one.这部电影和那部电影一样有趣.
(2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅.
其否定式为not as/so +adj./ adv.+as.例如:
This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用.
若有修饰成分,如twice,three times,half,a quarter等,则须置于第一个as之前.例如:
Your bag is twice as expensive as mine.你的袋子比我的贵一倍.
带as(so)… as的结构
1.在表示“和…一样…”时,可用“as...as”结构(前面的as后要用原形):
He is as busy as before.他还是和以前一样忙.
I’ll give you as much help as I can.我将尽量帮助你.
The airport was as crowded as ever.机场还是像平常那样拥挤.
You’re as good a singer as Johny Buck.你的歌唱得像约尼∙伯克一样好.
Modern computers can be as small as a book.现在的电脑可以像一本书那样大.
2.在表示“不像…那样…”时可用“not as(so)...as”这种结构:
It isn’t so cold as yesterday.今天不像昨天那样冷.
He is not so handsome as his brother.他