符号

描述

举例

CC

Conjunction: coordinating连接协调词

and, or

DT

Determiner限定词

this, some

IN

Preposition介词

for, of

JJ

Adjective形容词

happy, bad

MD

Verb: modal情态动词

can, could

NN

Noun名词

aircraft, data

PDT

Determiner: prequalifier前置限定词

Quite, all

VB

Verb: infinitive动词不定式

Take, live.