求动词过去式+复数+ing
过去式:stopstudybuilddrindrivedraweatfeedflyfindgrowhearlendlosemakeridesayspeakstandsweepspendswimthinkteachreadbeginbringbuyhoidknowkeepleavefeelthrowwritecan
复数:boyshelftoydictionarycountryknifetomato
ing形式:takecomeput