1. 基本用法
該結構的基本意思是「與……一樣」,其中接形容詞或副詞的原級,在否定句中,第一個 as 也可換成 so。
如:
He doesn't study as [so] hard as his brother.
他學習不如他弟弟努力。
2. 涉及數量或程度的用法
若涉及數量或程度,可用「as much+不可數名詞+as」和「asmany+可數名詞複數+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.
現在餐館沒有過去多了。
3. 有關詞序的一點說明
其間接形容詞時,有時該形容詞還可修飾另一名詞,但這個名詞應帶有不定冠詞(注意詞序)。
如:
I have as good a voice as you.
我的聲音和你一樣好。
4. 該結構的修飾語
根據情況可用(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, threetimes, 30 per cent等修飾,並且這些修飾語必須置於第一個as之前,而不能置於其後。
如:
This room is twice as large as that one.
這個房間是那個房間的兩個大。
You’re not half as clever us you think you are.
你遠不是自己想像的那麼聰明。
It took three times as long as I had expected.
這件事比我預料的多花了兩倍的時間。