“as+原級+as”，表示“和…一樣…”， “not as / so +原級+as”表示“不及…”。

　　He is as good a swimmer as any of us.

　　注意 good 的位置

　　He's as tall as I.

　　It is not as hot in Beijing as in Wuhan.

　　He does not smoke so heavily as his father.

　　French is just as difficult a language as English.

　　She is as good a cook as her mother.

　　I have never seen so beautiful a place as Hangzhou.

　　never 否定含義

　　類似的還有：hardly， little， few

　　“as+原級+as one can”和“as +原級+as possible”表示“盡可能地…”。

　　Come as soon as possible.

　　There is nothing we can do but wait as calmly as we can.

　　there is nothing…but… ， but后一定跟動詞原形

　　“as+原級+as”可以用來表示倍數(shù)。

　　My new coat cost me four times as much as the old one.

　　先說倍數(shù)，然后在as+原級+as

　　cost 花費(fèi)，主語是物。spend， 主語是人。

　　It takes sb. some time to do sth.

　　spend in doing sth.

　　spend on sth.

　　This room is twice as large as that one.

　　This room is twice larger than that one.