(
课件网) Guess! A toy A handbag Computers A woman Module 2 Unit 4 Computer facts What is a computer made of monitor keyboard mouse Main unit speakers screen USB disk CD-ROM/ DVD-ROM drives 1 The _____ shows words and pictures. 2 We use the _____ for typing. 3 The “brain” of a computer is in the _____. 4 We move the _____ to control the computer. 5 We hear sound from the _____. How do they work together Brain-storming What kind of jobs can a computer do play games calculate type draw pictures print play video/music Think about: How have computers developed over these years How important are computers in our daily lives Are computers cleverer than human beings Can they replace (取代) the human beings Read the whole passage quickly, and answer: How many computer facts do the passage tell us A sub-heading usually tells us the topic of the paragraph(s) below it. sub-headings Read the whole passage quickly, and answer: How many computer facts do the passage tell us A huge computer A desktop the history of the computer A palmtop A laptop 它由17468个电子管、6万个电阻器、1万个电容器和6千个开关组成，重达30吨，占地160平方米，耗资45万美元。 Topic sentence Supporting details Computers Sizes First computers Desktops Laptops Palmtops Other kinds Computers have become smaller and smaller. bigger than cars the size of televisions the size of big books small enough to put in your pocket like a bar of chocolate so tiny that you may be unaware of them We can use the topic sentence and supporting details to organize our writing. 当我们写作文时，要合理使用topic sentence和supporting details组织文章结构。 We can use compu-ters to Advantages Examples calculate at a faster speed than we can rarely (almost never) give wrong answers type and draw things do important jobs fly planes operate railways fly spaceships calculate type print draw things teach you play with you Easy work More important work electronic brains operate railways fly aeroplanes fly spaceships super calculators calculate very fast and rarely give wrong answers Most people know that computers are It is common knowledge 控制铁路系统 Is a computer cleverer than you Why No, it isn’t. Because the human brain can produce new ideas but computers cannot. What job may computers be able to do better one day The job of a doctor. What problem will we probably face if computers can do all our jobs We may have nothing to do. program recognize Talk to obey commands write your letters First, next, after that, then, finally… A special _____ _____ _____ your voice _____ your commands _____ your letters _____ millions of pages of writing _____ pictures, videos and sounds _____ about a famous person from history _____ a photograph or video _____ to them speaking will be more _____ than books recognize obey write hold contain read see listen popular program CD-ROMs/ DVD-ROMs Computer facts Part 3 Part 2 Part 1 The _____ of computers in different times The _____ of co ... ...
