work like magic 很有效

【讲解】

work指“生效，起作用”；magic指“魔力”，该习语从字面上解释就是“效果像有魔力一样”，意即“某物非常有效果”。

【对话】

A:I always have difficulty in sleeping well.

A:夜里我总是睡不好觉。

B:You can try drinking a glass of hot milk before you go to bed. It works like magic for me. This is the doctor's advice.

B:试着在临睡前喝杯热牛奶，这对我是很灵验的，也是医生的建议。

A:Really? I'll try it tonight.

A:真的吗？今晚我也试一试。

B:I hope you have a good sleep.

B:但愿你今晚睡个好觉。