as quick as还是as quickly as
两个都可以。
as quick as形容名词，例如
The birds speed is as quick as a plane. 鸟的速度和飞机一样快。
as quickly as形容动词，例如
The bird flies as quickly as a plane. 这只鸟飞得和飞机一样快。
1、as...as 中间加形容词或者副词的原级，表示相比之后两者程度一样。
2、as...as中间使用quick还是quickly，是取决于这个结构修饰句中的名词还是修饰动词，一般说来形容词修饰名词，副词修饰动词，所以“as quick as修饰名词，as quickly as 修饰动词”，这种说法是对的\'。as...as中间的形容词一般都是做表语。例如I\'m as quick as a cricket, I\'m as slow as a snail. I\'m as small as an ant, I\'m as large as a whale.
3、quick词性一般为形容词，做定语或者表语。fast除了形容词词性以外，还可以做副词，等于quickly。