CÓ QUY TẮC:

+ watch-watched

+ listen-listened

+ burn-burned

+ kick-kicked

+ stay-stayed

+ cook-cooked

+ pull-pulled

+ look-looked

+ arrive-arrived

+ study-studied

+ cry-cried

+ play-played

+ obey-obeyed

+ stop-stopped

+ fit-fitted

+ fix-fixed

+ prefer-preffered

+ omit-omitted

+ cancel-cancelled

+ age-aged

+ kill-killed

BẤT QUY TẮC:

+ hear-heard

+ swim-swum

+ catch-caught

+ hit-hit

+ sink-sunk

+ sing-sang

+ bring-brought

+ hang-hung

+ buy-bought

+ tell-told

+ say-said

+ sit-sat

+ eat-ate

+ smell-smelt

+ dream-dreamt

+ become-became

+ begin-began

+ build-built

+ choose-chose

+ do-did

+ be-was/were

Chúc bạn học tốt, hãy vote5*+CTRLHN+Cảm ơn :33