PARTS OF SPEECH
· n. (noun) - a name word
· v. (verb) - an action word
· ad. (adjective/adverb) - a describing word
· prep. (preposition) - a word used to show a relation
· pro. (pronoun) - a word used in place of a noun
· conj. (conjunction) - a joining word

点击下载：互博国际-VOA特别英语节目官方词汇表汇总