Unit 4 Part 1 Warm-up and Lesson 1（课件）-2021-2022学年高中英语必修2【导与练】高中同步全程学习（北师大版）

英语 Unit 4　Cyberspace 英语 主题语境·导入 现在,中国有一亿六千多万网民,其中66%是青少年。你知道人们上网做什么吗?你能够想象得到没有网络的世界会是什么样子吗? Can you imagine a world without the Internet?It’s surprising to think about it. 英语 Now,China has more than 162 million Internet users,according to the China Internet Network Information Centre. This is the second highest number of users in the world after the United States. Today,66% of Chinese “netizens (网民)” are teenagers.“They spend about thirteen hours every week online,” said Qian Hulin,an Internet expert(专家). Doctor Song in Beijing Xuanwu Hospital said about 14% of Chinese netizens who are teens often lasted over ten hours to play online games. The main reasons why teenagers surf the Web are to search for information,to communicate with others and to have fun. On the Internet,teenagers can find out almost anything. And surfing the Web can help students with their homework and widen their knowledge. Li Dong,a teacher at No. 41 Middle School in Shijiazhuang,likes her students to use the Internet. “When we talk in class,students who surf the Net usually know more background information than the others,”she said. In addition,people can use the Internet to write letters or stories and send emails. Many teens keep in touch with their friends online. It is cheaper than phoning somebody far away and also much quicker. 英语 短文注释: 1.search for寻找,搜寻 2.widen vt.(使)变宽;(使)扩大 3.background n.背景 4.keep in touch with... 与……保持联系 5.The main reasons why teenagers surf the Web are to search for information,to communicate with others and to have fun. 句意:青少年上网的主要原因是寻找信息,与他人交流和愉悦心情。 此句为含有主系表结构的简单句。主语中包含着why引导的定语从句, 修饰先行词reasons。表语为三个并列的动词不定式短语。 英语 阅读短文,回答问题: 1.Which country has the largest number of users in the world?   2.Why do teenagers surf the Net?     答案:1.The United States.