eat的ing形式是：eating，不用双写t。需要双写尾字母的规则是：“一个元音字母 + 一个辅音字母”构成的重读闭音节，这个辅音字母双写，再加ing。

1. admit（admitted – admitted）admitting

2. ban（banned – banned）banning 禁止

3. beg（begged – begged）begging

4. begin（began – begun）beginning

5. chat（chatted – chatted）chatting

6. clap（clapped – clapped）clapping 鼓掌

7. control（controlled – controlled）controlling

8. dip（dipped – dipped）dipping 浸，蘸

9. dig（dug – dug）digging

10. drag（dragged – dragged）dragging 拖，拉，拽

11. drop（dropped – dropped）dropping

12. fan（fanned – fanned）fanning 扇风

13. forget（forgot – forgot）forgetting

14. get（got – got）getting

15. hug（hugged – hugged）hugging 拥抱

16. infer（inferred – inferred）inferring 推断

17. man（manned – manned）manning 操纵；给…配置人员

18. net（netted – netted）netting 用网捕

19. nod（nodded – nodded）nodding

20. occur（occurred – occurred）occurring

21. pat (patted – patted ) patting 轻拍

22. permit（permitted – permitted）permitting

23. pet（petted – petted）petting 爱抚

24. pin（pinned – pinned）pinning (用别针)别住

25. plan（planned – planned）planning

26. prefer（preferred – preferred）preferring 偏爱

27. refer（referred – referred）referring 指，谈起，参阅

28. regret（regretted – regretted）regretting

29. rob（robbed – robbed）robbing

30. ship（shipped – shipped）shipping 用船运送

31. shop（shopped – shopped）shopping

32. sit（sat – sat）sitting

33. skip（skipped – skipped）skipping 跳绳；遗漏；跳读

34. sob（sobbed – sobbed）sobbing 啜泣

35. star（starred – starred）starring 主演

36. step（stepped – stepped）stepping

37. stop（stopped – stopped）stopping

38. swim（swam – swum）swimming

39. tap（tapped – tapped）tapping 轻敲

40. top（topped – topped）topping 到达…顶部

41. trap（trapped – trapped）trapping 诱捕; 使…陷入困境

42. wag（wagged – wagged）wagging 摇摆

43. win（won – won）winning

44. wrap（wrapped – wrapped）wrapping 包起来