三、指代前述内容, 或者是文中的内容

25. Beauty is everywhere. It makes us happy.

26. There is a football match tonight. It starts at six o’clock inthe evening.

27. If you remember these points, it will help you.

28. When we die for our motherland or the people, it is aworthy death.

29. You have helped me a lot. I shall never forget it.

30. Yang Liwei was the first Chinese to be sent up into space. It made the Chinese proud.

31. His mother is fifty-seven, but she doesn’t look it.

32. Mr. Wang was ill. Have you heard it?

33. ---Thank you for your help? ---Don’t mention it.

34. Although we can’t see it, there is air all around us.

35. It would be wonderful if you could come to help us.

四、指时间

36. ---What time is it by your watch? --- It’s ten minutes past two.

37. ---What day is it today? ---It’s Friday.

38. ---What’s the date today? ---It’s May 1st.

39. It’s early spring, but it’s still very cold.

make it + 时间 把时间定在……；约定……

40. Let’s make it eight o’clock.

41. Let’s make it three o’clock sharp.我们约定3点整吧。

It’s time (for sb.) to do sth.

42. It’s time to have supper. = It’s time for supper.

43. It’s time to take a walk.

44. It is time for us to set out.

45. It is time for you to go to bed.

It’s time for sth.

46. It’s time for class. (口语中可省略为Time for class.)

47. It’s time for lunch. (口语中可省略为Time for lunch.)

48. It’s time for a break. (口语中可省略为Time for break.)

49. It’s time for a rest. (口语中可省略为Time for rest.)

50. It’s time for dinner. (口语中可省略为Time for dinner.)

It’s high/about time + …did/should… (虚拟语气)

51. It’s high time you left.

52. It’s about time we should work hard at our lessons.

It’ is/has been + 时间 + since……

53. It’s twenty years since she left me.

54. It has been 20 years since I left here.

55. I heard it had been 20 years since they departed from each other.

It was/will be + 时间名词 + before 从句 “在多长时间后才发生某事”

56. It was twenty years before they met again.

57. It won’t be long before you recover.

58. It will be two years before I come here again.