chug的第三人称单数怎么拼写

In the distance I could hear the chug of farm machinery.离老远，我都能听到农机具的突突声。Busy boasts chug and scurry about the river - racy speed boat, stolid, snorting tugs.繁忙的船只在河上鸣叫着来来往往 - --高速快艇和笨头笨脑喘着气的拖驳.Chug Chug Chug , Toot Toot...

chug的一般过去时为：chugged...

vi.发出（持续而单调的）短声，发出突突声，（发动机等）咔嚓咔嚓地响，（火车、汽船等）咔嚓咔嚓地前进n.（发动机缓慢运转时发出的）突突声...

chug的复数形式为：chugs...

chug的音标：chug的英式发音音标为：[tʃʌg]chug的美式发音音标为：[tʃʌɡ]...

chug的现在完成时为：chugged...

chug的现在进行时为：chugging...