实义动词:很多。例如eat walk drink take have do sleep fly sweep drive ride 等等
助动词:do(does,did,done,构成疑问句与否定句)be(is,am,are,was,were,been,构成系表结构)have(has,had,had,构成完成时)
情态动词:can,may,must,should,ought to,could,have to,might,shall,will, would
介词:in,on,out,off,under,below beyond,for,of,behind,into,onto,through,across等等
副词:quickly,smoothly,slowly,fast,early,easily,hard,well,badly,carefully,often,always,sometimes,等等
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