Learning about Language优质课教案

Unit 3 computers Section_ⅠWarming Up & Reading — Pre-reading 1．In our daily life, the computer and the Internet play an important role. What ways do you think the computer can help us? 2．Who do you think is the founder of the World Wide Web? Please read the following passage to get the answer.

Most people have never heard of Tim Berners-Lee. He is not nearly as rich or famous as Marc Andreessen, who is the founder of Netscape, or Bill Gates, whose name has become a well-known word. Berners-Lee, who works in a small office at the Massachusetts Institute of Technology, is the creator of the World Wide Web. The creation of the Web is so important that some people compare Berners-Lee to Johann Gutenberg, who invented printing by movable type (活字) in the fifteenth century. Berners-Lee was born in England in 1955. His parents, who helped design the world’s first commercially (商业地) available computer, gave him a great love of mathematics and learning. In 1980, Berners-Lee went to work at CERN, a physics laboratory in Geneva, Switzerland, where he had a lot of material to learn quickly. He had a poor memory for facts and wanted to find a way to help him keep track (轨道) of things he couldn’t remember. He invented a software program that allowed him to create a document that had links to other documents. He continued to develop his idea through the 1980s. He wanted to find a way to connect the knowledge and creativity of people all over the world. In 1991, his project became known as the World Wide Web. The number of Internet users started to grow quickly. However, Berners-Lee is not completely happy with the way the Web has developed. He thinks it has become a passive tool for so many people, not the tool for creativity that he had imagined. Warming Up

1．Look at the following picture. Can you name some parts of the computer?

(1)host_computer___(2)monitor__(3)screen (4)keyboard__(5)mouse__(6)speaker 2. Match the words with their meanings. (1)A monitor is

A．the part of a computer that stores information. (2)The screen is

B．the part of the computer that you type on. (3)A keyboard is

C．the part of the computer that looks like a television. (4)A mouse is

D．something you use to click on things (files, etc.)．

(5)A CD-ROM is

E．the part of the monitor that you look at. (6)A hard disk is

F．the main device that a computer uses to store information. 答案：(1)C

(2)E

(3)B

(4)D

(5)A

(6)F 3．Try to give the Chinese meanings of the following terms about the computers and the Internet. ①web fans

③software

⑤hacker

⑦blog

⑨homepage

⑪password

网迷

②netizen

软件

④virus

网民

病毒

下载

电子邮件

网吧

网站

黑客

⑥download

博客

⑧e-mail

主页

⑩Internet bar

密码

⑫website

⑬host computer

主机

⑭desk top

桌面

Fast Reading Scan the text and then choose the best answer accor-ding to the text. 1．In 1936, Alan Turing wrote a book about________. A．how to simplify difficult sums B．how the computer could be made to work as a “universal machine”

C．how to build an analytical machine D．how to change the computer’s shape 2．Why did the computer totally change its shape? A．Because the computer could do many things. B．Because the computer could simplify sums. C．Because its memory improved. D．Because the computer never forgot anything. 3．How long did it take before the computer was built as an analytical machine? A．500 years.

B．300 years.

C．100 years.

D．200 years. 4．According to the last paragraph，which was not mentioned in the use of the computer? A．Mobile phones.

C．Bikes.

B．Rockets. D．Robots. 5．How can you understand the underlined word? Since the 1970s many new applications have been found for me. A．a formal request for sth. B．the practical use of sth. C．an act of spreading sth. D．an act of making a rule 答案：1～5

BCDCB Careful Reading

1．Read the text and then do the following exercises. Write out the main idea of the text. This is a short history of the development of computers. 2．Look at these inventions.Can you put them in order according to the time when they appeared?

答案：DAFBCE 3．Read the text and then fill in the blanks. Topic sentence ①Over_time_I_have_been_changed_quite_a_lot. (1)calculating machine Paragraph 1 Supporting details (2)analytical machine (3)②universal_machine (4)PC (5)laptop Topic sentence These changes only became possible as my memory improved. (1)③tubes Supporting details (2)④transistors (3)chips (4)network Paragraph 2

(5)⑤World_Wide_Web Topic sentence Since ⑥the_1970s many new applications have been found for me. (1)⑦communication (2)finance Paragraph 3 Supporting details (3)trade (4)robots (5)mobile phones (6)⑧space_rockets (7)providing a life of high quality

Summary Fill in the blanks according to the text. I was born in 1642 in France. After I was programmed by an operator 1.who used cards with holes, I could “think” 2.logically (logic). In 1936 my real father, Alan Turing, described 3.how computers could be made to work to solve any mathematical problem as 4.a universal machine in a book. People were surprised 5.at my artificial intelligence. At first, I was as large as a room. As time went by, I was made smaller and smaller. In the early 1960s, I got a family 6.connected (connect) by a network. My memory became so large 7.that even I couldn’t believe it! And my memory has developed so much that I never forget anything. I could share information 8.with others and talk to each other by a net. My family and I 9.have_been_used (use) by billions of people since the 1970s. I am happy 10.that I have truly been built to serve human race since my birth. Discussion Every coin has two sides, so does the Internet.Talk about the advantages and disadvantages of the Internet. Advantages：

(1)No_matter_how_far_it_is,_we_can_communicate_with_our_friends_by_Internet. (2)We_can_collect_related_information_for_our_lessons. (3)We_can_watch_movies_and_listen_to_music,_which_makes_our_life_interesting_and_colorful. (4)We_can_do_shopping_on_the_Internet. Disadvantages：

(1)If_we_play_computers_for_a_long_time,_it_is_bad_for_our_eyes_and_health. (2)It_is_a_waste_of_time_and_money. (3)Make_people_isolate_themselves_from_their_friends. (4)Some_people_especially_the_teenagers_are_crazy_about_the_computer_games_and_chatting_on_the_Internet.As_a_result，they_have_little_time_to_study. (5)Some_people_use_the_computer_wrongly. Conclusion：

There_is_no_doubt_that_computers_have_two_sides,_too.If_we_make_good_use_of_it,_it_will_make_our_lives_more_colorful_and_convenient.But_don’

t_lose_yourself_in_playing_computers.Just_remember:_Keep_fit,_study_well_and_work_hard.