我的两个儿子常常打架。

Wǒde liǎng gè érzi chángcháng dǎjià.

My two boys frequently fight.

小孩之间常常因为小事打架。

Xiǎohái zhījiān chángcháng yīnwèi xiǎoshì dǎjià.

Children often fight over small things.

他们在街头打架，引起了围观。

Tāmen zài jiētóu dǎjià, yǐnqǐle wéiguān.

They fought on the street, attracting a crowd.