it was argue at the end of the 19th cencury 【断that humans do not【断 because they are sad but that they become sad when the teaes begin to flow.怎么断句?
答:同学你好,because连词they主语are系动词sad表语but连词that关系词they主语become系动词sad表语when状语引导词theteaes主语begintoflow谓语.祝备考顺利!