必修2 Unit 3 Computers Learning about language课件(18张PPT)

课件18张PPT。Book 2 Unit 3 Computers teaching aims1.Master some important words and phrases2.Know some basic information about computers and improve reading skills3.Write a short passage, using the important structure in the passage Important words and phrasescalculate
simplify difficult sums
programme
logically
technological revolution
artificial intelligence
mathematical
personal
reality
tube
transistor
application
计算
简化难的运算
编程
逻辑地
技术革命
人工智能
数学的
个人的
现实
管子
晶体管
应用Computer
What do you usually do with computers? The history of the computerPalmtop abacuscalculatorlaptopWho am I ?Reading
The passage is arranged in the
order according to . time Skimming: Calculating
machineAnalytical
machineUniversal
machinenetworkpersonal computer
the changes of computers (In 1642)(In 1822)(In 1936)( )(In the 1970s)In the 1960sFast readingDetail readingRead P1＆2 and finish the timeline.begin as a calculating machine，simplify sumsThe computer grew rapidly
both in size and in brainpower.
solve difficult maths problems Read P1＆2 and finish the timeline.Detail reading analytical machine; think logically;answer quicker1936The computers had grown as
large as a room.1960sComputers were used in
offices and homes.Computers connect people all over the world together.Detail readingcommunications; finance; trade;
robots; mobile phones; medical operations
space rockets
providing a life of high quality
a devoted friend and helperDetail readingRead paragraph 3, finding the main idea.
The of computers.applications The development and use of computers
I was born in France in 1642, as a (calculate) machine. In1822, I was built as an analytical machine, and could think (logical). In 1936, I was made (work) as a universal machine to solve mathematic problems by my real father, Alan Turing. By 1940s, I had grown as large as a room. time went by, I was so lonely standing by myself until in the early 1960s, they gave me a family cnnected by a network. I (use) in offices and homes since the 1970s. Many new (apply) have been found for me. My goal is to provide humans a life high quality. I am (true) filled with happiness that I am a devoted friend and helper of the human race. calculatinglogicallyto worktheAshave been usedapplicationswithtrulyofWith the development of technology, people
have more and more opportunities to have
access to computers, mobile phones and
internet. Some think they bring us
advantages, but others don't think so.
What's your opinion about this?
(Use 3-5 sentences to describe
the advantages and disadvantages.)mini-writingAdvantages
Computers bring us great convenience. We can
not only use them to communicate with friends,
but also know more about the world,which can
broaden our horizons. Besides, surfing the
internet is of great befinit to our study.
Disadvantages
Some people especially the teenagers abandon
themselves to the computer games and chatting
on the Internet. As a result, they have little
time to study. Spending too much time playing
computer games will do harm to our health. Conclusion
There is no doubt that computer has
two sides, too. If we make good use
of it, it will make our lives more colorful
and convenient. But don’t bury yourself
in playing computers, otherwise it will bring
great harm to you. HomeworkRevise the important language points
2. Write a short passage about computer