我想介绍一下我的小儿子，马克。

I'd like to ___introduce my younger son, Mark.

你们俩被互相介绍过了吗？

Have you two been ___introduced to each other?

我们被互相介绍认识，然后聊了聊各自的国家。

We were ___introduced to each other and we talked about our home countries.