1. eat

2. drink

3. dance

4. sing

5. sleep

6. run

7. jump

8. skip

9. swim

10. play

11. fly

12. make

13. cook

14. wash

15. watch

16. clean

17. water

18. read

19. climb

20. wrong

21. do

22. does

23. did

24. shall

25. will

26. should

27. would

28. may

29. might

30. can

31. could

32. must

33. need

34. ought to

这些动词原形在四年级下册的英语教材和常用表达中经常出现，建议学生认真背诵和练习，以便在学习和实际交流中能够正确使用。