as fast as和as soon as还有as quickly as的区别为：含义不同、用法不同、侧重点不同。
一、含义不同
as fast as
释义：和…一样快。
例句：
None of us can run as fast as he can.
我们之中没有谁能跑得过他。
as soon as
释义：立刻；一…就…
例句：
He got married as soon as he graduated.
他一毕业就结婚了。
as quickly as
释义：快如。
例句：
They got the work over as quickly as possible.
他们尽快地结束了工作。
二、用法不同
as fast as
用法：表示动作上尽可能的快，是说动作本身。
as soon as
用法：指尽快地去做那个动作，比较一下。谈论不久将来的事或在过去某时间以后不久所发生的事，强调两个时间的接续关系。
as quickly as
用法：表示天生的迅速反应能力，多指单一动作的突然或短促、迅速或敏捷，它往往有“匆忙的”含义，也可表示出色的学习或接受能力。
三、侧重点不同
as fast as
解析：重在走路、跑步等的速度快。
as soon as
解析：表示时间间隔短。
as quickly as
解析：动上的快，“动作迅速地，敏捷地”在很短的时间内就作出了回应。
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