3 sentences

1. 他在商店撞见了他的老同学。

   tā zài shāng​diàn zhuàng​jiàn le tā de lǎo tóng​xué.

   He ran into his old classmate at the store.

   Source: Dong Chinese Dictionary

2. 他们二人私通，勾搭成奸，被众人撞见了。

   tā​men èr rén sī​tōng, gōu​da chéng jiān, bèi zhòng​rén zhuàng​jiàn le.

   The two of them had an affair and were caught in the act of adultery.

   Source: Dong Chinese Dictionary

3. 他在街上走着，迎面撞见了多年未见的老朋友。

   tā zài jiē​shang zǒu zhe, yíng​miàn zhuàng​jiàn le duō​nián wèi​jiàn de lǎo​péng​you.

   While walking down the street, he ran into an old friend he hadn't seen in years.

   Source: Dong Chinese Dictionary