朝三暮四的英文：
[Literal Meaning]
morning/three/evening/four
to offer three in the morning and four in the evening

[解释]
常常变卦，反复无常。

[Explanation]
to be changeable and capricious

[例子]
这个女人朝三暮四，每天身边总是出现不同的男人。

[Example]
This woman was changeable and capricious and had new men around her everyday.

[英文等价词]
to blow hot and cold
to change something that is already settled upon

He is of a variable mood; he never finishes what he starts.
他这个人朝三暮四，做起事来总是虎头蛇尾。

She saw that he was a fickle boy, prepared to philander with every woman he met.
她看出他是个朝三暮四的年轻人，会随时追逐他遇见的每个女人。

She saw that he was a fickle boy, prepared to philander with every woman he met
她看出他是个朝三暮四的年轻人，会随时追逐他遇见的每个女人。

She'd never been promiscuous, but in all those years she'd been on the stage naturally there'd been episodes
她从来不是个朝三暮四、到处乱搞的女人，然而演了那么多年的戏，自然也有过一些插曲。