my brother was singing while my mother was cooking= my brother was singing when my mother was cooking= while my mother was cooking,my brother was singing = when my mother was cooking,my brother was singing 语法都对吧
问题描述:
my brother was singing while my mother was cooking= my brother was singing when my mother was cooking= while my mother was cooking,my brother was singing = when my mother was cooking,my brother was singing
语法都对吧
答
是一样的.
语法都对