英语语法：英语单词的分类

 　　不同单词的类别称之为词类（Parts of Speech），自古以来，印欧语系的语言都是根裾这些词类进行分析的。

　　(a)封闭类（CLOSED CLASSES)

　　介词：of, at, in, without, in spite of

　　代词：he, anybody, they, one, which

　　限定词：the, a, that, every, some

　　连词：and, that, when, although

　　情态动词：can, must, will, could

　　基本动词：be, have, do

　　(b)开放类（OPEN CLASSES)

　　名词：John, room, answer, play

　　形容词：happy steady, new, large, round

　　全义动词：search,, grow, play

　　副词：steadily, completely7 really

　　(c)补充类

　　数词：one, two, three, first, second, third

　　感叹词：oh, ah, ugh,

　　最后，还有几个具有独特功能的词not(否定小品词)和to（不定式引导词）

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