is am—was are—were do—did have has—had go—went meet—met come—came take—took steal—stole eat—ate fly—fliew run—ran see—saw say—said make—made find—found stand—stood sit—sat sing—sang drink—drank give—gave ring—rang swim—swam write—wrote ride—rode drive—drove draw—drew grow—grew know—knew get—got forget—forgot sweep—swept keep—kept sleep—slept speak—spoke break—broke tell—told sell—sold buy—bought think—thought catch—caught teach—taught build—built can—could shall—should let—let must—must put—put 你的采纳 我的动力 希望我能继续帮助你 is am—was are—were do—did have has—had go—went meet—met come—came take—took steal—stole eat—ate fly—fliew run—ran see—saw say—said make—made find—found stand—stood sit—sat sing—sang drink—drank give—gave ring—rang swim—swam write—wrote ride—rode drive—drove draw—drew grow—grew know—knew get—got forget—forgot sweep—swept keep—kept sleep—slept speak—spoke break—broke tell—told sell—sold buy—bought think—thought catch—caught teach—taught build—built can—could shall—should let—let must—must put—put 你的采纳 我的动力 希望我能继续帮助你