“as+原级+as”，表示“和…一样…”， “not as / so +原级+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 否定含义

　　类似的还有：hardly， little， few

　　“as+原级+as one can”和“as +原级+as possible”表示“尽可能地…”。

　　Come as soon as possible.

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

　　there is nothing…but… ， but后一定跟动词原形

　　“as+原级+as”可以用来表示倍数。

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

　　先说倍数，然后在as+原级+as

　　cost 花费，主语是物。spend， 主语是人。

　　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.