2017届高考英语一轮复习精品课件：Unit 5《Nelson Mandela—a modern hero 》（新人教版必修1湖北专用）_高考复习指南

　　Keys: c

　　Read the passage and answer the questions.

　　1. When was the Internet invented by the US government?

　　2. What could people only send at first?

　　3. Who invented the World Wide Web in 1991?

　　4. Can people use e-commerce and online shopping to buy and sell things?

　　Keys: 1. In the 1960s.

　　2. They could only send very simple texts.

　　3. A British scientist named Tim Berners-Lee.

　　4. Yes, they can.

　　Now complete the time table.

　　In the 1960s: The Internet was invented for the army to use.

　　In the 1970s: Scientists and businesspeople wanted to use the Internet to send and receive messages.

　　In 1991: The World Wide Web was invented.

　　In the 1990s: More and more people started to use the Internet to send various types of files.

　　Today: The Web has hundreds of millions of users. It has changed the way people live, work and play.

　　四、精讲精练，快速提高

　　? 一般现在时一般过去时一般将来时

　　肯

　　定主语+am/is/are +done 主语+ was/were +done 主语+will/ be (am/is/are) going to +be +done

　　否

　　定主语+am/is/are + not+done 主语+was/were +not+done 主语+will/ be (am/is/are) not+going to+be+done

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