saw、went、ate之类的词

cat cat swimswam speak spoke go – went make – made get – got buy - bought come - draw—drew，grow—grew，know—knew，throw—threwdrive—drove，ride—rode，write—wrote begin—began，drink—drank，give—gave，ring—rang，sing—sang，sit—sat，swim—swam came fly-flewfeed—fed，meet-metkeep—kept，sleep—slept，sweep—swept break—broke，speak—spoke sell—sold，tell—told stand—stood，understand—understood bring—brought，buy— bought，think—thought，catch—caught，teach—taught can—could，shall—should，will—would am，is—was，are—were，build—built，do—did，eat—ate，fall—fell，feel—felt，find—found，fly—flew，go—went，have ／has— had，hold—held，leave—left，make—made，may—might，run—ran，see—saw，take—took

这是动词过去式：did drank took

过去式