mom,( )is sonia.sonia,( )is my mother.改填this还是that
问题描述：
mom,( )is sonia.sonia,( )is my mother.改填this还是that
答
Mom,this is sonia.
Sonia,this is my mother.
你当面介绍人的时候,都是用this,
如果用that,是介绍不在场的人.