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教学过程
Step 1 Greetings
Step 2 Review and lead-in
1) Make a survey
How many students use computers in study or at home in our class?
What do you do with them besides studying?
Play computer games, watch movies, chat on line, send e-mails to
Friends and relatives, do shopping etc.
So computers make our life happy and convenient. In fact, computers are used more widely in many fields than what I said.
For instance, computers are used in space, in hospital, in school, in factories, in business and many other places.
2）Play the videos of five pictures .Lead to the new words .What can computers do in the pictures?
Picture 1 Computers help astronauts control the speed and direction of a spaceship.
Picture 2 Doctors can find out diseases easily with the help of them.
Picture 3 Robots controlled by computers can take the place of humans to do the underwater work.
Picture 4 Computers are also used in business to place and cancel orders.
There is no doubt that computers are used widely.
Step 3 Presentation
1 Let the students listen to 1a, and get the general idea of the paragraph. Answer the question “What will happen if people work on computers too long?”
2 Let the students read 1a carefully and find the topic sentence of each paragraph. At last discuss and choose the best title in groups, and give the reasons. Explain “tiny” and “for instance”“connect”
tidy= very small in size
for instance = for example
connect point A----------to--------point B
3 Help the students understand the following:
keep their hearts beating normally
make the workplace safer and better
make the world smaller
4 Let the students read aloud 1a after the tape then read once by themselves with the question “what can computers do ?’’ And then complete the table the use of computers.
Step 4 Consolidation
Talk about the use of computers in different places in groups. Then retell the advantages and disadvantages of computers according to groups of pictures.
Step 5 Practice