Unit4Computerfacts知识点.doc

Unit 4 Computer facts 1. smaller and smaller 越来越小 (比较级用 and连接表示越来越 ) 2. more and more beautiful 越来越美丽 3. build built built 建造 rebuild 重建 building 建筑物 4. in the 1940s 在二十世纪40 年代 5. bigger than 比? .大 (than 比较级标志词) 6. since then 自从那以后（现在完成时） 7. Desktop computers are the size of televisions. 台式电脑和电视机一样大小 =Desktop computers are as big as televisions. 8. watch TV 看电视 9. They are small enough to put in your pocket. 它们小到可以放进你的口袋 = They are so small that you can put them in your pocket. 10. a bar of chocolate 一条巧克力 11. tiny 微小的 12. be unaware of= be not aware of =not realize 没有意识到 13. washing machine 洗衣机 14. depend on=rely on 依靠 15. It depends. 看情况而定。 16. dependent 依赖的 independent 独立的 17. realize 意识到，实现 18. It ’ s common knowledge常. 识 19. have something in common 有共同之处 20. enrich our knowledge 丰富我们的知识know knew known 21. calculate计算 ,动calculator计算器 22. rarely=seldom 很少，难得 (在反义疑问句中是否定词) 23. type 打字，类型 typist 打字员 24. print 打印，印刷 25. draw drew drawn 画，拖 26. more importantly 更重要的（副词单独使用，修饰整个句子） 27. the importance of 的? 重? 要性 28. operate railways 操控铁路 29. operate on sb. operation给某人动手术 30. fly flew flown飞flight 航班，飞行，名 31. spaceship 宇宙飞船 32. in space 在太空 33. for these reasons=because of these reasons=due to these reasons 由于这些原因 34. electronic brain电脑（电子的大脑） 35. electric light电灯 electricity 电 36. clever=smart=bright=wise聪明的 37. the answer to this question这个问题的答案 38. for the time being=at present 目前，暂时 39. understand understood understood 明白，理解，懂得 40. meaning meaningful meaningless 意思，有意义的，无意义的 41. What do you mean by ? ..? meant meant你说的是什么意思？ 42. be able to do sth.=can do sth. 能够做某事 43. human humans 人 44. be better at doing sth. 更擅长于做某事 (good 比较级) 45. true truly truth 真的形，副，名 46. raise interesting questions 提出有趣的问题 47. happen to us发生在我们身上 48. spend our lives spent spent 度过我们的生命 49. have nothing to do 无事可做 50. need to do sth 需要做某事 necessary 有必要的 51. buy a program bought bought买一个程序 52. recognize your voice 辨认你的声音 53. obey one ’ s commands听从 ? .的命令 54. have a good command of 精通，对? .