新视野大学英语视听说教程2第三版BOOK3UNIT4.pptx

What’s the big idea?
UNIT 4
Unit 4 What’s the big idea?
Opening up
Listening to the world
Speaking munication
Further practice in listening
Wrapping up
Learning objectives
Fun time
present your business idea
4
Learning objectives
talk about inventions and creative ideas
1
predict the theme and relevant vocabulary before you listen
2
propose ideas ment on ideas while brainstorming
3
learn to use voice, body language and visual aids effectively in speech delivery
5
Discussion
Look at the pictures. Why do you think they are on the “world’s worst inventions” list? Give at least one reason for each.
The waste gas emitted by cars is polluting our living environment. Moreover, along with the increasing number of cars, the roads are ing more and more crowded and there are more traffic accidents.
Opening up
Discussion
Accidents caused by the nuclear power tell us that it is not as safe as it claims. In addition, the economic cost of nuclear power accidents is high, and meltdowns can take decades to clean up. The evacuation of affected populations will also pose serious problems.
Opening up
Discussion
Nowadays e to know more and more about the harmful effects of fast food. Though it can bring us a lot of convenience, it is of little nutritional value and often high in fat, sugar, salt, and calories. Eating too much fast food may cause obesity and other related diseases.
Opening up
Discussion
Despite its convenience, the mobile phone has brought us many problems as well. As we all know, this small machine emits radiation all the time, which is harmful to our health. Furthermore, it reduces the intimacy between people and brought about some psychological problems, especially among young people.
Opening up
Discussion
The weapon is a device designed or used for nothing but killing people. There are different kinds of weapons, including conventional weapons, chemical weapons, biological weapons, nuclear weapons, etc. They are often used in wars,