As…as的用法详解
下面是我整理的一些关于As…as 的用法分析,以供大家学习参考。
As…as这个词组经常用于阐述两个事物在某一方面或行为上是等价的
用法1:阐述事物A和B在某个方面特性一致
例句:The weather this summer is as bad as last year.
当我们用词组As…as去描述两个事物特性一致时,我们会把一个形容词放到As和as之间,比如在上述例句中,我们想说今夏的天气和去年一样糟糕,…as “bad” as…
同学们需要注意的是形容词往往由“be”动词引导,我们再来看一个例句:the apple “is” as big as the orange.
用法2:阐述事物A的行为或者其所发出的动作和事物B的行为是一样
首先,我们来想一想,什么词能修饰行为动词(action verb)?没错,是副词。我们看例句,I always unwrap electronic devices “carefully”.
因此,如果我们想说A和B两个同学都是很小心unwrap电子产品的人,我们可以把副词“carefully”放到As和as之间。
例句:John unwraps electronica devices as carefully as Michael does.
因此,As…as用法2的注意事项是我们要用一个行为动词引导As…as之间的副词,比如,An apple “grows” as slowly as an orange does.
注:本质上在As…as词组中,第二个as实际上是在引导一个名词从句,但我们往往仅保留从句的主语,即名词,而省略其他部分。看例句,The weather this summer is as bad as last year’s (weather is).
as…as结构的几点用法说明:
1. 基本用法
该结构的基本意思是“与……一样”,其中接形容词或副词的原级,在否定句中,第一个 as 也可换成 so。如:
He doesn't study as [so] hard as his brother. 他学习不如他弟弟努力。
2. 涉及数量或程度的用法
若涉及数量或程度,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。
There are not as many restaurants as there were. 现在餐馆没有过去多了。
3. 有关词序的一点说明
其间接形容词时,有时该形容词还可修饰另一名词,但这个名词应带有不定冠词(注意词序)。如:
I have as good a voice as you. 我的声音和你一样好。
4. 该结构的修饰语
根据情况可用(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。
You’re not half as clever us you think you are. 你远不是自己想像的那么聪明。
It took three times as long as I had expected. 这件事比我预料的多花了两倍的时间。