As…as的用法詳解
下面是小編整理的一些關(guān)于As…as 的用法分析,以供大家學(xué)習(xí)參考。
As…as這個(gè)詞組經(jīng)常用于闡述兩個(gè)事物在某一方面或行為上是等價(jià)的
用法1:闡述事物A和B在某個(gè)方面特性一致
例句:The weather this summer is as bad as last year.
當(dāng)我們用詞組As…as去描述兩個(gè)事物特性一致時(shí),我們會(huì)把一個(gè)形容詞放到As和as之間,比如在上述例句中,我們想說今夏的天氣和去年一樣糟糕,…as “bad” as…
同學(xué)們需要注意的是形容詞往往由“be”動(dòng)詞引導(dǎo),我們?cè)賮砜匆粋€(gè)例句:the apple “is” as big as the orange.
用法2:闡述事物A的行為或者其所發(fā)出的動(dòng)作和事物B的行為是一樣
首先,我們來想一想,什么詞能修飾行為動(dòng)詞(action verb)?沒錯(cuò),是副詞。我們看例句,I always unwrap electronic devices “carefully”.
因此,如果我們想說A和B兩個(gè)同學(xué)都是很小心unwrap電子產(chǎn)品的人,我們可以把副詞“carefully”放到As和as之間。
例句:John unwraps electronica devices as carefully as Michael does.
因此,As…as用法2的注意事項(xiàng)是我們要用一個(gè)行為動(dòng)詞引導(dǎo)As…as之間的副詞,比如,An apple “grows” as slowly as an orange does.
注:本質(zhì)上在As…as詞組中,第二個(gè)as實(shí)際上是在引導(dǎo)一個(gè)名詞從句,但我們往往僅保留從句的主語,即名詞,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結(jié)構(gòu)的幾點(diǎn)用法說明:
1. 基本用法
該結(jié)構(gòu)的基本意思是“與……一樣”,其中接形容詞或副詞的原級(jí),在否定句中,第一個(gè) as 也可換成 so。如:
He doesn't study as [so] hard as his brother. 他學(xué)習(xí)不如他弟弟努力。
2. 涉及數(shù)量或程度的用法
若涉及數(shù)量或程度,可用“as much+不可數(shù)名詞+as”和“as many+可數(shù)名詞復(fù)數(shù)+as”。如:
He doesn’t pay as much tax as we do / as us. 他沒我們交的稅款多。
There are not as many restaurants as there were. 現(xiàn)在餐館沒有過去多了。
3. 有關(guān)詞序的一點(diǎn)說明
其間接形容詞時(shí),有時(shí)該形容詞還可修飾另一名詞,但這個(gè)名詞應(yīng)帶有不定冠詞(注意詞序)。如:
I have as good a voice as you. 我的聲音和你一樣好。
4. 該結(jié)構(gòu)的修飾語
根據(jù)情況可用(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等修飾,并且這些修飾語必須置于第一個(gè)as之前,而不能置于其后。如:
This room is twice as large as that one. 這個(gè)房間是那個(gè)房間的兩個(gè)大。
You’re not half as clever us you think you are. 你遠(yuǎn)不是自己想像的那么聰明。
It took three times as long as I had expected. 這件事比我預(yù)料的多花了兩倍的時(shí)間。