You can take it in turns to babysit.

你们可以轮流代人照看孩子。

I promised to babysit for Mrs Plunkett.

我答应给普伦基特太太看孩子。

My friend asked me to babysit for her six-month-old son.

朋友让我照看她六个月大的孩子。

Mandy and Kevin are going to babysit.

Mandy和Kevin打算去代人照看孩子。

to babysit for sb

代…照看孩子；照看

She had been babysitting him and his four-year-old sister.

她一直在照看他和他四岁的妹妹。