美国当代英语语料库（COCA）标签总汇-3

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RA  adverb, after nominal head (e.g. else, galore)

REX  adverb introducing appositional constructions (namely, e.g.)

RG  degree adverb (very, so, too)

RGQ  wh- degree adverb (how)

RGQV  wh-ever degree adverb (however)

RGR  comparative degree adverb (more, less)

RGT  superlative degree adverb (most, least)

RL  locative adverb (e.g. alongside, forward)

RP  prep. adverb, particle (e.g about, in)

RPK  prep. adv., catenative (about in be about to)

RR  general adverb

RRQ  wh- general adverb (where, when, why, how)

RRQV  wh-ever general adverb (wherever, whenever)

RRR  comparative general adverb (e.g. better, longer)

RRT  superlative general adverb (e.g. best, longest)

RT  quasi-nominal adverb of time (e.g. now, tomorrow)

TO  infinitive marker (to)

UH  interjection (e.g. oh, yes, um)

VB0  be, base form (finite i.e. imperative, subjunctive)

VBDR  were

VBDZ  was

VBG  being

VBI  be, infinitive (To be or not... It will be ..)

VBM  am

VBN  been

VBR  are

VBZ  is

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