take to sth like a duck to water

to discover when you start to do something for the first time that you have a natural ability to do it

自然而然地做起…来，天生就会做…

He took to fatherhood like a duck to water.

他天生就是个好父亲。

She has taken to teaching like a duck to water.

她教起书来驾轻就熟。