Unit 4 Amazing Science Topic 3 China is the third nation that sent a person into space.SectionC课件（18

课件18张PPT。 Unit 4 Topic 3
China is the third nation that sent a person into space.Section CTeaching 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?GuessingBrainstorm computer play gameswatch moviesdo shoppingstudysearch for informationsend e-mailsCan 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 ComputersUnderline 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, people’s lives at home have been changed, too.
3. Computers have improved our lives, but they have brought problems, too. control the speed and directionfind diseases easily and solve other problemsused to place and cancel orders do dangerous workParagraph 1 Paragraph 21 Have people’s 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, isn’t it?
Yes, it is.How should we use computers properly?
1 We shouldn’t 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 won’t have (not have) enough time to study or exercise.
3 We shouldn’t 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.-- Don’t eat too much junk food.
-- You are right. However, I do like the food ____________ tastes good.
A. who B. what C. thatBACkey points1.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 )AThere is no doubt thatstronger and strongerbesidesexceptkey points5.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 pollutionFor example, it’s clean1b 2. Complete the following diagram. computers usageproblemwork 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 _____________________.
don’t have enough time __________________.
something on Internet is not ________________.control the speed and direction find diseases easilycontrol the robotsplace and cancel orders watch movies do shopping do businesscommunicate chatting online sore eyesto study or exercise true or goodRetell it!SummaryWe 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.AssignmentwritingOne Day Without Computers
Computers play an important part in our life. If we don’t have computers, our life will be quite different._______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
In short, we almost have trouble with everything without computers. Thank you