、pretty/prettily
Pretty可作形容词和副词用。作副词用时，pretty只能修饰形容词和副词，不能修饰动词。修饰动词要用prettily。如：
The performance was pretty good.演出相当好。
One dog looks pretty much like another to me.在我看来，狗长得都差不多。
It’s pretty hard to explain.这件事很难解析清楚。
The children sat prettily in front of the makeshift stage.孩子们乖乖地坐在临时搭建的舞台前。