新概念青少版3A_unit_4(共34页).pptVIP

PC = Personal Computer It’s an Apple 2. It’s the first personal computer It came onto the market in 1977. Attic Mum found it in a box in the attic. It has been there for years. It’s been there since we moved into this house. Hard disk lawnmower Hard disk sounds like lawnmower Hard disk space (空间). Listen to MP3 and answer the question. How long has the computer been in the attic? Watch the DVD and repeat after it. Unit 4 A museum piece Museum 博物馆 museum piece 古董 What’s this? 第一台个人电脑是apple公司制造的 Apple（苹果电脑）是美国著名老牌计算机公司，成立于1977年，是个人电脑最早的倡导者和著名生产商。它所生产的苹果系列电脑，包括iMac，PowerMac，ibook，Powerbook等产品线的众多硬件产品，一直是个人电脑市场的主流产品之一，并曾提出过很多新概念，其产品也掀起过多次流行潮，风行一时。。目前，苹果电脑电脑公司在全球几十个国家建立了分公司或代表机构，其产品也行销全世界. It’s a very early computer. Come onto market 面世 阁楼 Where did you find it? find-found-found It’s mine! mine=my PC. 自从 It hasn’t been out of its box for 20 years. 听起来像 feel like look like smell like taste like It is niosy! 5 Megabyte =5MB That’s nothing. It’s just got 5 Megabytes hard disk space. It was already a museum piece when I bought it. buy- bought-bought It was already a museum piece when I bought it, and that was a long time ago.  Maybe （也许） I’m a museum piece now, too! is – was 过去式 buy – bought when I bought it 当我买它的时候 （过去时间，用过去时) a long time ago 很久以前 （过去时间，用过去时） 20 years 现在完成时： Have/has + 动词过去分词 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。 如： for+ 时间段 since+ 时间点 I have been to America since d 1998. I have got the car for d five years. 情态动词+动词原形 can, must, may 等都是情态动词，不能独立做谓语，需和实义动词连用。变一般疑问句时将情态动词直接提前至句首。 I can open the box. (变一般疑问句) Can you open the box? Robert: What’s this, Dad?William: It’s Apple 2. It’s a very early computer.  In fact (事实上), it’s the first Personal Computer, ever(曾今).  It came onto the market（面世） in 1977. Where did you find it? the first 第一 the second 第二 the third 第三 Where 特殊疑问词，在哪 PC: p