part of 和a part of 的区别（part of）

1、part of speech part of speech n.（名词） 【复数】 parts of speech 1. One of a group of traditional classifications of words according to their functions in context, including the noun, pronoun, verb, adjective, adverb, preposition, conjunction, and interjection, and sometimes the article.词类，词性：一组传统的词语类别之一，根据它们在上下文中的功能划分。

2、包括名词、代词、动词、形容词、副词、介词、连词和感叹词，有时还包括冠词2. A word considered as a part of speech.被看作是某种词性的一个单词。