I still remember the promise (that) he made.(定语从句)我仍旧记得他做出的承诺。
2.从语义角度看,同位语从句与前面的名词是同位关系,两者可以转换为主表关系。定语从句与它前面的名词是所属关系,表示“……的”,起修饰作用,不能改成主表关系。
The news that we'll go on a picnic this Sunday isn't true.(同位语从句)
可改为:The news is that we'll go on a picnic this Sunday.
The news that you've heard isn't true.(定语从句)
若改为The news is that you've heard.则句意不完整。
3.同位语从句的连词that一般不能省略,而定语从句中的关系代词that在从句中作宾语时,常常可以省略。
The foreigner expressed the hope that he would come to China again.(同位语从句)
外宾表达了他想再次来中国的愿望。
I remembered the hope (that) the foreigner expressed to me.(定语从句)我记得外宾向我表达的希望。
4.当when,why,where和how等引导同位语从句时,它们为连接副
词,虽然在句中充当句子成分,
但前面没有与其意义相当的先行词而在定语从句中when,why,where为关系副词,在其前面分别有表示时间、原因或地点意义的名词作先行词。