21. prior to 在…之前
22. range from… to… (范围)从…到…;在…范围内变动
23. be busy in 忙于
24. be busy doing sth. 忙于做某事
25. can't help doing sth.禁不住做某事
26. feel like doing sth. 想要走某事
27. have a good time (in ) 玩得高兴,过得愉快
28. have difficulty( trouble) (in) doing sth. 做…有困难
29. spend /waste time(in) 花费/浪费时间在…
30. It's no use doing sth. 做某事没有好处/意义
31. There's no point in doing sth. 没必要做某事
32. in the way/by the way/ in no way 挡路/顺便说一下/决不
33. It's the first/second time that第一次/第二次…
34. catch sb doing sth. 看到某人正在做某事
35. call off/cancel 取消
36. have an influence on sth./sb. 对某事/某人有影响
37. impose sth on sb. 把…强加于某人
38. but for sth. 要不是…
39. risk doing sth. 冒险做某事
40. escape doing sth. 避免做某事