look the girl -----(chat)with her mother in the sitting room

Look, the girl is chatting with her mother in the sitting room.
看,那女孩和她妈妈正在客厅聊天.
look 是现在进行时的标志词之一,也就是说,当句子的开头出现这个词并用逗号或感叹号与句子分开时,要用现在进行时.
Look, the boys are playing basketball on the playground. 类似的还有listen,例如：
Listen, someone is singing in the classroom. 听,有人在教室唱歌.