20 đt theo quy tắc 

1- like - liked                                                               

2- learn - learned

3- watch - watched

4- love - loved

5- work - worked

6- play - played

7- enjoy - enjoyed

8- clean - cleaned

9- disscuss - disscussed

10- want - wanted

11- wash - washed

12- ask - asked

13- add - added

14- cry - cried

15- cook - cooked

16- hope - hoped

17- smile - smiled

18- cough - coughed

19- brush - brushed

20- live  - lived

20 đt không theo quy tắc

1- teach - taught

2- get - got

3- win- won

4- run- ran

5- hear- heard

6- fly - flew

7- build - built

8- begin - began

9- become - became

10- buy - bought

11- bear - bore 

12- grow - grew

13- go - went

14- forget - forgot

15- leave - left

16- mistake - mistook

17- take - took

18- lend - lent

19- sell - sold

20- sit - sat

Động từ có quy tắc: walked, watched, washed, cleaned, played, watered, danced, fixed, asked, cooked, looked, wanted, arrived, liked, stopped, taxed(đánh thuế), listened,travelled, studied, cried

Bất quy tắc: read, ran, hit, bought, fought, swam, found, was/were, left, sent, saw, drove, slept, understood, knew, grew, said, threw, caught, taught