哦，他是个好男孩。

Oh, he is a good boy.

你们是好男孩和好女孩。

A preadolescent boy or girl.

他和彼得一样都是好男孩。

He is as nice a boy as Peter （is）.

他是这样的一个好男孩。

He's such a fine boy.

我对你来说是一个好男孩吗？

Am I a good enough man for thee?

彼得是个好男孩，人人都喜爱。

Peter is such a nice boy that he is loved by everybody.

你是一个我想要亲近的好男孩。

You are such a good boy I want to be close to.

他是个好男孩，虽然有些迟钝。

He is a nice boy though somewhat slow.

好女孩/好男孩。

Good girl / boy.

他们是一群好男孩。

They are a fine bunch of boys.