21. used to do sth.过去常常做某事.

22. What's wong with……? …..出了问题(事)?

23. have nothing to do with….. 与…..无关

24. be busy doing sth . 在忙于做某事

25. too…..to….. 太……以致知于不……

26. so ……that ….. 如此….. 以致知于不……

27. such…..that…… 如此….. 以致知于不……

28. It take sb. some time to do sth .某人做某事用了一些时间.

29. spend …..on sth.(doing sth.)花钱/时间做某事.

30. pay…..for sth.花费(钱)买某物.

31. What /how about……? …….怎么样(好吗)?

32. would like to do sth .想要/愿意做某事..

33. I don't think that我认为……不…..

34. Why not do sth.? Why don't you do sth .?为什么不做某事呢?

35. What do you mean by….?你….是什么意思?

36. What do you think of …..(How do you like ….)你认为….怎么样?

37. Mike enjoys collecting stamps . So do I.迈克喜欢集邮.我也也喜欢.

38. The more, the better . 越多越剧好.

39. Thanks for doing sth.谢谢你做了某事.