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不规则。
be.am .is -was are-were begin-began break-kroke bring-brought build-built buy-bought can-could catch-caught come-came do-did draw-drew drink-drank drive-drove eat-ate fall-fell feed-fed feel-felt find-found fly-flew forght-forgot get-got go-went have.has-had hear-heard hold-held keep-kept knoe-knew learn-learnt.learned leave-left let-let make-made may-might mean-meant meet-met must-must put-put read-read ride-rode ring-rang run-ran say-said see-saw sell-sold shall-should shoe-shoeed sing-sang sit- sat sleep-slept speak-spoke stand-stood swim-swam take-took teach-taught tell-told think-thought throw-threw understand-understood will-would write-wrote 规则。 规则动词的过去式变化如下： 一般情况下，动词词尾加 -ed ，如： worked played wanted acted 以不发音的 -e 结尾动词，动词词尾加 -d，如： lived moved decided declined hoped judged raised wiped 以辅音字母 + y结尾的动词，把-y变为-i 再加-ed，如： studied tried copied justified cried carried embodied emptied 以一个辅音字母结尾的重读闭音节动词，双写词尾辅音字母，再加 -ed，如： stopped begged fretted dragged dropped planned dotted dripped 注：不规则动词的过去式变化规律性不强，须多加记忆。 go - went make - made get - got buy - bought come - came fly-flew 不规则动词的过去式的构成 1．把动词原形中的i改为a，变成过去式。如： begin—began，drink—drank，give—gave，ring—rang，sing—sang，sit—sat，swim—swam 2．把重读开音节中的i改为o，变成过去式。如： drive—drove，ride—rode，write—wrote 3．改动词原形中的aw ／ow为ew，变成过去式。如： draw—drew，grow—grew，know—knew，throw—threw（动词show除外，show—showed） 4．动词原形中的e改为o，变成过去式。如： get—got，forget—forgot 5．动词原形中的ee改为e，变成过去式。如： feed—fed，meet—met 6．动词原形中的eep改为ept，变成过去式。如： keep—kept，sleep—slept，sweep—swept 7．动词原形中的eak改为oke，变成过去式。如： break—broke，speak—spoke 8．动词原形中的ell改为old，变成过去式。如： sell—sold，tell—told 9．动词原形中的an改为oo，变成过去式。如： stand—stood，understand—understood 10．以ought和aught结尾，且读音是〔 :t〕的过去式。如： bring—brought，buy— bought，think—thought，catch—caught，teach—taught 11．以ould结尾且读音为〔ud〕的情态动词过去式。如： can—could，shall—should，will—would 12．把动词原形中的o改为a，变成过去式。如： come—came，become—became 13．在动词原形后加d或t变成过去式，并且发生音变。如： hear〔hi 〕—heard〔h :d〕， say〔sei〕—said〔sed〕，mean〔mi:n〕—meant〔ment〕 14．动词的过去式与动词原形一样。如： let—let，must—must，put—put，read—read〔red〕 15．不符合上述规律的动词过去式。如： 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 |
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