高中英语 Unit 3 Computers Reading Who am I课件 新人教版必修

1、,Unit3 Computers WHO AM I?,Reading How to find the topic sentence?,Exposition 说明文,Topic sentence,thinking?,How to find it?,What is topic sentence?,Over time I have been changed quite a lot,1642 The computer began as a calculating machine.,1822 The analytical machine was made by Charles Babbage.,1936

2、 Alan Turings universal machine,1940s The computer had grown as large as a room,1960s Family of computers was connected to each other.,1970s PC & laptop were used in offices and homes.,Now Computers connect people all over the world together.,transistors,chips,network,World Wide Web,These,changes,on

3、ly became possible,as my,memory,improved,tubes,I have a memory like an elephant. = I have a good memory and will never forget things.,APP,Since the 1970s,many,new applications,have been found,for me,communication,trade,medical operations,space rockets,mobile phone,robots,Finance,APP,Supporting detai

4、ls,calculating machine analytical machine universal machine PC laptop,memory tubes transistors chips network WWW,communication finance trade robots space rockets mobile phone medical operations,1. Over time I have been changed quite a lot. 2. These changes only became possible as my memory improved. 3. Since the 1970s many new applications have been found for me.,history,development,uses,main idea of the text,This text told us the _ and the _ of computers , mainly to express its widely _.,Topic sentence,Main idea,history,development,uses,Exercises time,Homework,Reading material Find out the