新概念英语第2册__第5课_PPT_ no wrong numbers.ppt

现在完成时与一般过去时的比较? 1）一般过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作； 现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。 I saw this film yesterday. （强调看的动作发生过了。） I have seen this film. (强调对现在的影响，电影的内容已经知道了。） 2一般过去时常与具体的表示过去的时间状语连用; 现在完成时通常与模糊时间状语连用或无时间状语。 一般过去时的时间状语: yesterday, last week，…ago, in1990, in October, just now, …-- 具体的时间状语现在完成时的时间状语: for, since, so far, ever, never, just, yet, till/until, up to now, in the past few years, recently, … --模糊的时间状语 句子中如有过去时的时间副词（如 yesterday, last, week, in 1960）时，不能使用现在完成时，要用过去时 错Tom has written a letter to his parents last night. 对Tom wrote a letter to his parents last night. Grammar 比较： He has lived in China for ten years. 他在中国住了十年。（含义：他可能还住在中国，也可能刚刚离开中国。） He lived in China for ten years. 他曾在中国住过10年。（含义：他现在已经不在中国。） 同样地，如果用了与现在时间没有联系的确定的时间状语，也用一般过去时。 I have been all over Africa. 我一直在游历非洲， I went all over Africa in 1965. 1965年我游遍了非洲。 Group 4 The movie/ begun Pattern drill- 现在完成时/一般过去时 Student A: Has the train left? Student B: Yes, it has just left. It left a minute ago. Group 1 John/ arrived Group 5 The taxi/ come Group 3 The teacher returned Group 2 Mary /rung up Group 6 The noise/stopped Group 7 The letters arrived Pattern drill- 现在完成时/一般过去时 Student A: He’s gone abroad. Student B: really? He went abroad last year too, didn’t he? Group 4 Sell some pigeons Group 1 Buy a new car Group 5 Start a new film Group 3 Paint his house Group 2 Take the math exam Group 6 Write a book Group 7 Give her a necklace Special difficulties in this way:这样,以这种方式in a friendly wayin a way : 从某种意义上来说in the way:挡路 out of the way:让路by the way: 顺便说一声/问一下（转移话题）on the way（to):在去...的途中 on the/one’s way to school/the office, on the way home Homework Work book P9-10 Try to recite lesson 5 Prepare for the dictation Preview lesson 6 Thank you! Discussion How do you send messages to others (friends/parents)? current bottle write to her/him call her/him E-mail her/him chat with her/him by surfing the Internet put a pie