They had large rooms with beautifully decorated walls.解释句子中的

They had large rooms with beautifully decorated walls.为什么黑体部分是介词短语作定语修饰rooms,不是定语从句 从句必须是完整的句子 本句中的介词短语中的过去分词是作定语修饰walls with 是介词 beautifully是状语 decorated是定语 walls是介词宾语该句如果 用定语从句也只能修饰 介词 宾语walls 应该是 with the walls which were beautifully decorated .

其实也可以改写为They had large rooms which is beautifully decorated walls。

定语从句需要引导词，有主语 ，谓语～

定于从句是一句话，一句完整的话。with是介词，所以引导的是介词短语。之所以说是短语，因为它的主谓宾并不齐全，不是一句话。