quick是形容词，它的副词形式是quickly。主要区别就是,在形容词的后面加了-ly后缀,使得形容词变成了副词。
1、对于形容词而言,在英语中,它可以修饰名词性词语,同时可以作为表语，以及加the表示同类型的事物,等等.对于副词而言,可以用来修饰形容词、动词、句子,可以用来作为句子的状语,等等.同时,它们又有共同点,就是都有比较级和最高级.简单的里例子如下：
中文：车来了,你得快点.
The bus is coming,and you must be quick.
Quickly,the bus is coming.
2、两者均可表示“快”,在口语中,一般多用quick(尤其在需要用比较级或最高级时),并且总是放在动词之后；若放在动词之前,一般用quickly.如：
Come quick(ly). There’s been an accident. 快来,出事故了.
You get there quicker by bus. 你坐汽车去那儿会快一些.
扩展资料：
例句：
She gave him a quick glance.
她迅速扫了他一眼。
These cakes are very quick and easy to make.
这些糕饼做起来又快又简单。
Would you like a quick drink?
你要不要小饮一杯？
The doctor said she'd make a quick recovery.
医生说她很快就能康复。
It's quicker by train.
坐火车比较快一些。
Are you sure this is the quickest way?
你确信这是最快捷的方法吗？
Have you finished already? That was quick!
你已经做完了？真快呀！
His quick thinking saved her life.
他敏捷的思考救了她一命。