Unit 3 Computers Warming up and reading 1,Guessing game,I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they dont like me now. Do you know who I am?,abacus,I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems. Do you know who I am?,calculator,A toy?,A handbag?,Computers,How much do you know about computers?,keyboard,mouse,host computer,screen,monitor,speaker,The components( 组成部分)of a computer:,A huge computer,A PC,PDA,laptop,The development of computers,Q: What can we use computers to do?,Pre-reading,We can use the computer to.,listen to music,watch movies,search for useful information,communicate with friends,buy things,怎样学好英语,Reading,Who Am I ?,Q2. What does each paragraph tell us?,Q1.In the passage, what does “I” refers to？,a computer,Tips A topic sentence gives the main idea of a paragraph. A topic sentence is usually the first or last sentence of a paragraph.,Paragraph 1,Paragraph 2,Paragraph 3,Over time I have been changed quite a lot.,These changes only became possible as my memory improved.,Since the 1970s many new applications have been found for me.,Q3. Whats the main idea of the text? The changes and the applications of the computer.,A tip: The key words in the text may help you to summarize the main idea of the text.,Read para1 and finish the exercise.,E1:What was the computer called in different stages? 1. It began as a(n) _ in France in 1642. 2. About 200 years later it was built as a(n) _ by Charles Babbage. 3. In 1936 it was made to work as a(n) _. 4. As time went by, the computer was made smaller. First as a and then as a _.,calculating machine,analytical machine,universal machine,PC(personal computer),laptop,E2: Two important characters:,Charles Babbage,Alan Turing,analytical machine,real father universal machine,Solve difficult mathematical problems,Think logically and produce an answer quickly,Simplify difficult sums,Be used in offices and homes,E3:Function of each machine,Para 2: technical words,Memory:,chip,transistor,tube,The amount of space in a computer for storing information.内存,network,The World Wide Web,Listen to paragraph 2: How did its memory improve?,These changes only became possible as my memory improved. First, it was stored in _, then on _.And later on very_ _. In the early 1960s,I was given a family connected by a _. I was able to share my knowledge with others through the_ _ _.,tubes,transistors,small,chips,network,World,Wide,Web,What are the new applications?,Paragraph 3,Task 3 Retelling,How did the writer organize the text?,According to the time,1960s,Retell the history of computers,Name : computer Born : (time)_ (place) _ My real father: _ My size: 1._( in the past) 2._(modern) My history: 1. 1642 _machine 2. 1822_machine 3. 1936 _machine 4. 1940s _ 5. 1970s _ and _ My memory: _ _ _ My applications: _; _; _; _; _; _; _.,1642,France,Alan Turing,large,smaller and smaller,analytical,calculating,universal,laptop,PC,tubes,transistors,chips,communication,finance,robot,mobile phone,space rocket,medical operation,trade,huge computer,Task 4 Summary-Who am“I”,Homework,Read the text after class and underline the difficult words and sentences,Computers_ people all over the world together.,1642,1822,Now,1936,1960s,1970s,The computer began as a_,The_ was built by Charles Babbage.,Alan Turing wrote a book about how computers could be made to work as a_,The first family of computers was connected to each other.,Computers were used in_,The history of the computer:,1940s,The computer had grown as large as_,Timeline,(What happened?),analytical machine,calculating machine.,universal machine.,a room.,offices and homes.,connect,Task3,Language points,common,1. most widely known; ordinary:,He is a common sailor.,2. have nothing/little/something/ a lot in common,At first, I think we only had one thing in common, but suddenly I felt we had a lot in common.,They have nothing in common with one another.,The two brothers had everything in common in their manners, but the two sisters have little in common.,In common with (like) many educated people he prefers classic music to jazz.,4. in common : equally with or by all.,He and his bother own the firm in common.,In common with many other classmates, I like sports.,3. have. in common (with), share with,We just had nothing in common with each other and I couldnt communicate with his dull business friends.,5. in common with : =lik