限制性定语从句与同位语从句的区别?

请你先看下面两个例句：Do you remember the news that we heard from Xiao Li yesterday?你记得我们昨天从小李那里听到的那消息吗?Everyone cheered the news that the war was over。人人为战争结束的消息而欢呼。在第一句中,that we heard from Xiao Li yesterday是一个限制性定语从句,而在第二句中,that the war was over就是一个同位语从句。这是因为that the war was over（战争结束了）是对news的内容的解释。可that we heard from Xiao Li yesterday就不是对它所修饰的news的内容进行解释了。限制性定语从句和同位语从句的区别就在这一点上。新年快乐!