过去式
1. am/is--- was
2. are---were
3. go---went
4. ride---rode
5. feed---fed
6. take---took
7. see---saw
8. do---did
9. grow---grew
10. take---took
11. have---had
12. eat---ate
13. buy---bought
14. get---got
15. come---came
16. draw---drew
17. teach---taught
18. can---could
19. swim---swam
20. tell---told
21. lose---lost
22. hear---heard
23. say---said
24. run---ran
25. sing---sang
26. fly---flew
27. put---put
28. make---made
29. sit---sat
30. wake---woke
31. read---read
过去式
1. am/is--- was
2. are---were
3. go---went
4. ride---rode
5. feed---fed
6. take---took
7. see---saw
8. do---did
9. grow---grew
10. take---took
11. have---had
12. eat---ate
13. buy---bought
14. get---got
15. come---came
16. draw---drew
17. teach---taught
18. can---could
19. swim---swam
20. tell---told
21. lose---lost
22. hear---heard
23. say---said
24. run---ran
25. sing---sang
26. fly---flew
27. put---put
28. make---made
29. sit---sat
30. wake---woke
31. read---read