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1、,Unit 4 Lesson 7 A Museum Piece,准时,美国是克莱尔的祖国。,1,3,5,农贸市场,他们要去美国呆两个月。,一个漫长的早晨,我们要烧壶水，喝杯美味的茶！,Dictation,Robert: Whats this, Dad? William: Its an Apple 2. Its a very early computer. In fact (事实上), its the first Personal Computer,ever(曾今). It came onto the market（面世）in 1977. Where did you find it?,Perso
2、nal Computer = PC 个人电脑,the first 第一代,come onto the market 上市；在市场上出售,Robert: Mum found it in a box in the attic. William: Oh, then its mine! Its been there for years. In fact, its been there since we moved into this house!,find的过去式found,mine = my computer,Its been = it has been 现在完成时 have/has + 动词过去分
3、词,Robert: Does it still work? William: I dont know Ah, there you are! Can you hear the hard disk?,can 是情态动词，表示能够，有能力做某事 can + 动词的原形 变一般疑问句时将can提前至句首,Robert: Is that noise （噪音） the hard disk? It sounds like a lawnmower ! William: It is noisy （吵闹的，嘈杂的）! It hasnt been out of its box for twenty years!,n
4、oise 名词 噪音 noisy 形容词 有噪声的,for + 时间段,Robert: What can you do with it? William: Good question! Its just a museum piece , really. Its only got five Megabytes hard disk space. Robert: Five Megabytes! Thats nothing! （太微不足道了）,has got 有,William: I know. It was already a museum piece when I bought it, and t
5、hat was a long time ago. Maybe Im a museum piece now, too!,过去式 is was buy bought,a long time ago 很久以前 （过去时间，用过去时）,现在完成时：,表示动词发生在过去，持续到现在或对现在产生影响，后接表示延续性的时间状语 have/has + 动词过去分词 如： for+ 时间段 since+ 时间点 I have been to America since d 1998. Jack has got the car for d five years.,six month three years,Sunday ten o clock last weekend,a long time,1996 January,for,for,since,since,Grammar 语法,has/have been + + 已经在(某地)待了多久 / 从.开始一直在(某地),for + 时间段,since + 时间点,has/have gone to + 地点 + 已经去了(某地)多久 / 从.开始就去了(某地),for + 时间段,since + 时间点,here / there,in + 地点,
