as……as的意思及具体用法！

1、该结构的意思是“跤耧锿葡与......一样”。

2、接形容词或副词的原级，在否定句中，第一个 as 也可换成 s泠贾高框o。如：He doesn't study as [so] hard as his brother. 他学习不如他弟弟努力。

3、表示涉及数量或程度，可用“as much+不可数名词+as”和“as many+可数名词复数+as”。如：He doesn’t pay as much tax as we do / as us. 他没我们交的税款多。

4、可用(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等修饰，并且这些修饰语必须置于第一个as之前，而不能置于其后。如：This room is twice as large as that one. 这个房间是那个房间的两个大。

5、as…as…不表示比较的几个常见句型。

一、as…as possible／sb can尽可能的……

Please answer my question as soon as possible．

请尽快回答我的问题。

The detective is searching the man as carefully as he can．

那个侦探正在尽可能仔细地搜查那个男子的身体。

二、as…as usual／before像以前一样……

She looks as pretty as before．

她看起来和以前一样漂亮

Though they failed，they still worked as hard as usual．

尽管他们失败了，但他们仍像以前一样努力工作。

三、as long as只要，引导条件状语从句

I will stay with you as long as there is a room flree．

要是你有一间空余的房子，我就住在你这里。

You may borrow this book as long as you promise to give itback．

只要你答应归还，你就可以把这书借走。

扩展资料

AS是一个英语单词，意思有如同、例如等，可作副词、介词、连词、代词使用。

副词adv.

1. 跟...一样地,同样地 例如:I'm as tall as him 我和他一样高。

2. 如同;例如 例如:There are lots of famous buildings as the Eiffel Tower and the Arch of

Triumph. 这里有许多著名建筑如埃菲尔铁塔和凯旋门。

介词prep.

1. 作为,以...的身份 例如:He works as a tour guide. 他作为导游工作。

2. 当作 例如:She is a famous person as a actress. 作为一个女演员,她很出名

3. 像;如同 例如:The old woman was dressed as a young lady. 这位老妇人打扮得像一位年轻人。