人教版高中英语必修2第三单元Reading ((共15张PPT).ppt

* * * * Unit 3 Computers Warming up, pre-reading reading Warming Up: the development of computers (guessing Who am I?) abacus calculator huge computer PC laptop PDA robot 1. With the title and the pictures in the text, can you guess what will be talked about in the text? Pre-reading Reading Who am I? Can you find out the topic sentence of each paragraph? Skimming: Task1 Para I: Para II: Para III: Who am I? 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 out for me. Skim the passage and find out the topic sentence in each paragraph. (2 min) Can you find out the main idea of this passage? A. The development of computers. B. A machine which is simple-minded. C. The development and the applications of computers. D. Computers may replace human beings. Task 2 ScanningRead para. 1 and fill in the chart (2 mins).  Time Machine Applications In 1642 A __________ machine ________difficult sums About in _____ An analytical machine Think_________ In 1936 A ________ machine Solve any difficult problem By the 1940s A larger machine ______worried the designers ____________ Personal computer/ Laptop ______________________________ calculating Simplify 1822 logically universal Reality Since the 1970s Used in offices and homes Task 3 My shape didn’t change even though my memory improved. The older I am, the larger I have become. Over time I have large memory so that I will not forget anything I have been told. I was able to share my knowledge with others through the World Wide Web in the early 1960s. F F T T The information was stored in tubes, then on transistors and later on the chips. As I have grown older I have also grown smaller. Read para. 2 and then tell the statement true or false. (1 min) Task 4 What are the new applications of the computer? Read Para 3 and then answer the following questions. (1 min) Task