Unit 4 Topic 3 China is the third nation that sent a person into space.,Section C,Teaching aims:,We are going to learn : 1. Some words: tiny, inside, brain, connect 2. Some phrases: for instance , place and cancel orders 3. Some sentences: (1) There is no doubt that computers are very useful in technology and business. (2) Computers help us at work and at home, but they must be used properly. 4.Grammar: Attributive clause 5. The usage of computers.,I am very popular in the world . I am very useful. I can work faster than you. I am quite clever . I can work out difficult problems. I have a big brain . I can give you all the answers. Who am I?,Guessing,Brainstorm,computer,play games,watch movies,do shopping,study,search for information,send e-mails,Can we use the computer in the following fields?,education business industry medical care entertainment sports,Can you give an example of the use of the computer in one of the fields above?,In education, we can use computers to search for helpful information. In business, we can do some shopping on the Internet. In space, astronauts use computers to control the speed and direction of a spaceship. ,What is the passage about ?,The Importance of Computers,Underline the topic sentence of each paragraph.,1. Since computers were invented in the USA in the 1950s, they have become very important in many areas of work and leisure. 2. Since the Internet came into being, peoples lives at home have been changed, too. 3. Computers have improved our lives, but they have brought problems, too.,control the speed and direction,find diseases easily and solve other problems,used to place and cancel orders,do dangerous work,Paragraph 1,Paragraph 2,1 Have peoples lives at home been changed since the Internet came into being? Yes, they have. 2 What do people use their personal computers for? People can use their computers to play games, watch movies, do shopping, do business, send e-mails and chat. 3 The Internet is making the world smaller, isnt it? Yes, it is.,How should we use computers properly? 1 We shouldnt work on (从事) computers too long, or we may get headache (头痛)or sore eyes. 2 If we spend (花费)too much time playing (play) computer games, we wont have (not have) enough time to study or exercise. 3 We shouldnt believe everything (一切) we read on the Internet.,Paragraph 3,定语从句,1.- Lily, what kind of museums do you like ? - I like museums _ can provide visitors with free WiFi. A. what B. that C. who 2.- have you ever heard of Chen Guangbiao? - Yes, I think he is a kind man _ often helps people in need. A. who B. which C. whom 3.- Dont eat too much junk food. - You are right. However, I do like the food _ tastes good. A. who B. what C. that,B,A,C,key points,1.Nobody is here. There is _ that the boy broke the window. A. no doubt B. no sure C. no chance 2.毫无疑问，中国变得越来越强大。 _ China is becoming _. 3.We study many other subjects _ English. (except / besides ) 4.He answered all the questions _ the last one. (except / besides ),A,There is no doubt that,stronger and stronger,besides,except,key points,5.在我们的周围有许多种污染，例如空气污染，噪音污染，水污染。 There are many kinds of pollution around us, _. 6.太阳能有很多优点，例如它很干净，可再生，无污染。 The energy from the sunlight has a lot of advantages. _, renewable and non-polluting.,such as air pollution, noise pollution, water pollution,For example, its clean,1b 2. Complete the following diagram.,computers,usage,problem,work,daily life,_ of a spaceship. help doctors _. _ in factories. help businessmen _.,play games and _. _ and _ at home. _ by sending e-mails and _.,get headaches or _. dont have enough time _. something on Internet is not _.,control the speed and direction,find diseases easily,control the robots,place and cancel orders,watch movies,do shopping,do business,communicate,chatting online,sore eyes,to study or exercise,true or good,Retell it!,Summary,We learn : 1. Some words: tiny, inside, brain, connect 2. Some phrases: for instance , place and cancel orders 3. Some sentences: (1) There is no doubt that computers are very useful in technology and business. (2) Computers help us at work and at home, but they must be used properly. 4.Grammar: Attributive clause We know: The importance of computers.,Can you imagine what the life will be like without computers? Use your imagination to write a passage.,Assignment,writing,One Day Without Computers Computers play an important part in our life. If we dont have computers, our life will be quite different._