In other words, people who are similar become friends or do things together.

VOA: special.2010.06.13

I think we all understand the importance of children growing up together and having the opportunity to work together to become friends, to learn the results of conflicts and to basically interact in a social environment.

我们都明白,孩子共同成长,有机会合作是很重要的,他们要成为朋友，要知道发生冲突的后果,要在社会环境里互动。

麻省理工公开课 - 媒体、教育、市场课程节选

How did you two become friends?

你们是怎么交上朋友的？

和朋友一起逛洛杉矶 - SpeakingMax英语口语达人

Children become friends with the robot,she says.

VOA: special.2009.12.17

getting along well and just become really good friends.

我们相处得很愉快，然后就成为了好朋友。

汉语学习课程很难 - SpeakingMax英语口语达人

And that parents who share ideas with their children and talk with them and who've met most of their child's friends are much less likely to have children who become bullies."

VOA: special.2010.05.06