4 sentences

1. 他碰上了一个朋友。

   tā pèng​shàng le yī gè péng​you.

   He ran into a friend.

   Source: OpenSubtitles

2. 大家都会碰上麻烦。

   dà​jiā dōu huì pèng​shàng má​fan.

   Everyone will be in trouble.

   Source: OpenSubtitles

3. 你碰上过多少次这种事儿？

   nǐ pèng​shàng guo duō​shao cì zhè zhǒng shì er?

   How many times has this happened to you?

   Source: OpenSubtitles

4. 我在回家的路上碰上了一个老朋友。

   wǒ zài huí​jiā de lù shàng pèng​shàng le yī gè lǎo péng​you.

   I ran into an old friend on my way home.

   Source: Dong Chinese Dictionary