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【同步教学】新课标人教版英语必修2:课件Unit 3 Computers Reading


Unit 3 Computers Reading

I. Warming up
Look at the following pictures and say their English names. calculator

abacus

Warming up
PC

huge

computer

Warming up
PDA

laptop

Warming up
robot

What’s next?

Warming up
Discuss with your partner the following questions. ? What do these pictures have in common? ? What do they tell you about the development of computers? ? What do you think will be the next development?

II. Pre-reading
Work in pairs. Try to put these inventions in an order according to the time when they appeared. Then read the passage quickly and check to see if you were right. (2 ) analytical machine (5 ) laptop (1 ) calculating machine (6 ) robot (4 ) PC (3 ) universal machine

III. While-reading
Read the passage quickly and check your prediction. Was it correct? What is the main idea of the passage?
the development of computers This passage is about _________________________.

While-reading
In pairs guess the meaning of the following new words from the reading passage. Then check your guesses using a dictionary. A B technological revolution simplify application personal solve reality explore happiness goal

While-reading
根据构词法猜测词义

The meaning of the words in group A can all be guessed from their formation. Each pair of words has the same root(词根).
technology simple person real happy technological simplify personal reality happiness

While-reading
根据上下文猜测词义

The meaning of the words in group B can all be guessed from context. Example: revolution: From the previous sentence we know that after the work of the operator, “?I? could ?think? logically and produce an answer quicker than any person”, which indicates a great improvement, so “revolution” here may mean “a complete change”.

While-reading
Read the passage again. Find the topic sentence of each paragraph and the supporting details. Paragraph 1: Over time I have been changed quite a lot. 1. calculating machine 2. analytical machine 3. universal machine 4. laptop

While-reading
Paragraph 2: These changes only became possible as my memory improved. 1. tubes 2. transistors 3. chips 4. network 5. World Wide Web

While-reading
Paragraph 3: Since the 1970s many new applications have been found for me. 1. communications 2. finance 3. trade 4. robots 5. mobile phones 6. medical operations 7. space rockets 8. providing a life of high quality

While-reading
Summary
? A topic sentence sets out the main idea of a paragraph. ? A topic sentence is usually the first or last sentence of a paragraph.

IV. Post -reading
Read the passage quickly and finish the timeline below.
The computer began as a calculating machine. 1642: ___________________________________________ 1822: The analytical machine was made by Charles Babbage. 1936 The computer grew rapidly both in size and in brainpower. ____: ___________________________________________ The computer had grown as large as a room. 1940s : __________________________________________ 1960s _____:The first family of computers was connected to each other. Computers were used in offices and homes. 1970s: __________________________________________ Computers connect people all over the world together. Now : __________________________________________

Post-reading
Work in group of four and brainstorm a list of things that you, your school and your family use computers for. ? Discuss how computers have changed our lives. ? Think about what you would have to do if you could not use computers any more. ? Give a report to the class.

Post-reading
You can use the new words in the reading passage and the following expressions to help you in your discussion.
I think/don’t think that … What makes you think so? As/Since …, I think … I believe that … Please give me your reasons. I think … because (of) … First … Second …

I agree/don’t agree … because…

V. Homework
Read the passage again. Underline the sentences that you do not understand and try to solve the problems using context clues and the dictionary.


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