题目内容：

happen to do 与 meet up with 的区别

优质解答

happen to do sth.是固定词组,“碰巧做某事”的意思
I happened to sit by her in the cinema.在电影院我碰巧坐在她旁边.
meet up with 则通常指与某人碰面、会面,含有偶然碰见之意