不规则动词变化表现在式过去式过去分词A-B-B型say said said laylaidlaidpaypaidpaidsell sold sold telltoldtoldcatch caught caught teachtaughttaughtfight fought fought buyboughtboughtbringbroughtbroughtthinkthoughtthoughtseeksoughtsoughthave/has had had hearheardheardmakemademadebuildbuiltbuiltlearnlearned/learntlearned/learntlend lent/learned lent/learned sendsentsentbendbentbentspendspen