动词过去式的变化规律
1．当i发[i]时，i变a：give-gave, swim-swam, sit-sat, ring-rang, sing-sang, begin-began, drink-drank
2．当i发[ai]时，i变o：drive-drove, write-wrote, ride-rode
3．以t结尾的短单词不变：hurt-hurt, hit-hit, shut-shut, let-let, put-put, set-set, cost-cost, cut-cut
4．nd结尾d变t：lend-lent, spend-spent, send-sent
5．当单词中有ea时，ea变为o-e：speak-spoke, break-broke, wear-wore
6．以ell结尾变为old：tell-told, sell-sold
7．扫地时仍然保持睡觉的感觉，其中扫地sweep，保持keep，睡觉sleep，感觉feel中有ee将ee变为e-t：sweep-swept, keep-kept, sleep-slept, feel-felt
8．以含有w的字母组合结尾的单词将_w变为ew：blow-blew, throw-threw, draw-drew, know-knew,另外fly和see的过去式也是以ew结尾，fly-flew, see-sew
9．过去式中含有ought的单词：fight-fought, think-thought, buy-bought, bring-brought
10．过去式中含有aught的单词：catch-caught, teach-taught
生词表: