XX included a substance commonly known as PET 这里的commonly known as PET为什么是分词？

发布网友发布时间：2022-04-25 04:16

共4个回答

热心网友时间：2023-10-25 07:56

These micro plastics included a substance commonly known as PET and widely used in the manufacture of clothing and food and liquid containers.
这里面的commonly known as PET和widely used in the manufacture of clothing and food and liquid containers都可以看作是定语从句的省略。
还原后为：
These micro plastics included a substance (which is) commonly known as PET and widely used in the manufacture of clothing and food and liquid containers.
在定语从句中 is known和is used都是被动语态，省略了关系代词后，只保留过去分词短语作定语，依然含有被动含意。

热心网友时间：2023-10-25 07:57

这是因为被知道、了解和被用作，是被动的意思，所以用过去分词。

热心网友时间：2023-10-25 07:57

commonly known as PET和widely used in the manufacture of clothing and food and liquid containers都是-ed分句作后置修饰语，它们不叫分词，分词是一个词而已。我觉得它们与相应的限定关系分句比，思想分量较低。

热心网友时间：2023-10-25 07:58

过去分词短语作定语，相当于定语从句。