单三形式现在分词过去式规则动词词尾加-ed 有三种读音：1. 在清辅音后读作[t]。
如：asked, helped, watched, stopped2 在浊辅音和元音后读作[d]。
如：enjoyed, studied, moved, called3. 在t / d 后读作[id]。
如：wanted, needed不规则动词的过去式见课本后的不规则动词表。
大体上归纳有以下几条记忆法：1.以t 结尾的词，过去式与原形相同。
如：put—put, let—let, cut—cut, beat—beat，cost—cost，hit—hit2.以d 结尾的词，把d 变成t。
如:build—built, lend—lent, send—sent, spend—spent （read—read）3.以n 结尾的词，在词后加t。
如：mean—meant, burn—burnt, learn—learnt4.以ow / aw 结尾的词，把ow / aw 变成ew。
如：blow—blew, draw—drew, know—knew, grow—grew，throw—threw5.含有双写字母的词，将双写改为单写，在词尾加t。
如：keep—kept, sleep—slept, feel—felt, smell—smelt，sweep—swept6.只去掉一个e：feed—fed，meet—met7.闭音节词，改i 为a。
如：sit—sat, swim—swam, ring—rang, drink—drank，sing—sang，begin—began，8.开音节词，改i 为o。
如：drive—drove, ride—rode, write—wrote,9. buy—bought, bring—brought, think—thought, catch—caught, teach—taughty—laid, say—said, pay—paid 母鸡“下蛋”并“摆放”好后，“说”，“付钱”11.is/am—was, are—were, have/has—had, do—did, go—went, run—ran, see—saw, fly—flew, get—got, win—won, eat—ate, come—came, make—made, tell—told, take—took, fall—fell, speak—spoke, wear—wore, stand—stood, become—became, forget—forgot, hear—heard,can—could, will—would, shall—should, find—found。
