四年级英语下册中常见的过去式单词包括：

1. play - played

2. like - liked

3. go - went

4. read - read

5. write - wrote

6. swim - swam

7. fly - flew

8. jump - jumped

9. run - ran

10. walk - walked

11. is - was

12. are - were

13. buy - bought

14. fall off - fell off

15. do - did

16. say - said

17. come - came

18. send - sent

19. cost - cost

20. learn - learnt

21. will - would

22. speak - spoke

23. feed - fed

24. write - wrote

25. have - had

26. wear - wore

27. fall - fell

28. take - took

29. make - made

30. love - loved

31. decide - decided

32. study - studied

33. dance - danced

34. take - took

35. make - made

36. love - loved

37. decide - decided

这些单词的过去式形式在英语中用于描述过去发生的动作或状态。掌握这些过去式对于提高英语口语和写作能力非常重要。建议学生通过练习和复习这些单词来巩固记忆。