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［形容词和副词］as + 形容词或副词原级 + as

　　1）在否定句或疑问句中可用so as.例如：

　　He cannot run so/as fast as you. 他没你跑得快。

　　2）当as as 中间有名词时采用以下格式：as +形容词+ a +单数名词/ as + many/much +名词。例如：

　　This is as good an example as the other is. 这个例子和另外一个一样好。

　　I can carry as much paper as you can. 你能搬多少纸，我也能。

　　3）用表示倍数的词或其他程度副词做修饰语时，放在as的前面。例如：

　　This room is twice as big as that one. 这房间的面积是那间的两倍。

　　Your room is the same size as mine.　你的房间和我的一样大。

　　4）倍数+ as + adj. + as　倍数+ the + of.例如：

　　This bridge is three times as long as that one. 这座桥的长度是那座的三倍。

　　This bridge is three times the length of that one.

　　Your room is twice as large as mine. 你的房间是我的两倍大。

　　Your room is twice the size of mine.

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