江西省吉安县第三中学人教版高中英语必修二课件：Unit 3 Computers —— grammar课件

Well, in general, WWW stand for “World Wide Web”. Most people confuse the Internet with the World Wide Web. However, there is a difference. The Internet is made up of thousands of computers that are connected worldwide. WWW or World Wide Web, is what your computer uses to check out the Internet. For example, your computer uses browsers, such as Internet Explorer or Netscape (网景浏览器) to let you see and hear all the cool pictures, information, music and sounds on the Internet.
1．confuse vt. 2．connect vt. 3．browser n. 4．surf vt. 5．modem n. 6．graphics n.
使混乱；使困惑 连接；联合；关联 (电脑)浏览器 在……上冲浪 调制解调器 绘画；图像
1．What difference is there between the Internet and WWW? ________________________________________________________________ 2．What do you need if you surf the World Wide Web? ________________________________________________________________ 【答案】 1.The Internet is made up of thousands of computers that are connected worldwide；WWW is what your computer uses to check out the Internet. 2．You need to have a computer with a modem and a browser.Besides，you need to have an Internet Service Provider.

_p_r_o_b_l_e_m_s__
Strong
Network times
_M__e_m_o_r_y_ Tubes stored in _T_r_a_n_s_i_st_o_r_s__
Small chips
Develo
_C_o_m__m__u_n_ic_a_t_i_on
pment A__p_p_li_c_a_ti_o_n_s Finance
machine difficult sums
Develop ment
An a_n_a_l_y_t_ic_a_l machine
Think logically and produce an
answer quickly
A _u_n_i_v_e_r_sa_l_ Solve difficult machine _m__a_th_e_m__a_t_ic_a_l
Changes of the machine
Calculating machine
Analytica l machine
Universal machine
Machine with new transistor
A family connected by a network
Machine with artificial intelligence
the second generation
The history of (1945-1956)
(1956-1963)
computers
the fourth generation (1971- )
the third generation (1964-1971)
Summary of the passage. I began as a _ca_l_c_u_l_a_ti_n_g_ machine in 1642.

8. Nowadays you can _u_p_lo_a_d__(上传）and _d_o_w_n_l_o_a_d（下载）information from the net easily.
An abacus
A calculator A huge computer
A notebook
A PC Computer (laptop) A PDA
• Learn about the development of computers by referring to the pictures and the given material;
• Write about the advantages and disadvantages of using computers by individual（个人的） and group work.
On one hand, … On the other hand, …
Computers
-Vocabulary, Warming up &
Writing Unit 3 Book 2 人教课标版
Objectives
• Enlarge the vocabulary about computers by a quiz（小测验） and the combination （结合）with the practical use;
• do word processing （进行文字处理）;
• take distance education（远程教育）;
• download resources online.
Activity 3 Group work 1. People say computers bring us more

Paragraph I: lot.
Over time I have been changed quite a
paragraph II: These changes only became possible as my memory improved.
paragraph III: Since the 1970s many new applications have been found for me.
Charles Babbage 1800s analytical machine
Alan Turing 1836 universal machine
• calculator • laptop • simplify • operator • logical • technology • revolution • mathematical
1940s Computers had _____gr_o_w_n_a_s__l_a_rg_e_ aasroom.
1960s A family of computers was connected by a network.
1970s now
First as _ __a__PaCnd then ___a_s_a__la_p_to_p__ computers were used
about18 The __a_n_a_ly_t_ic_a_l machine was made by Charles
22
Babbage.
Alan Turing ____wr_o_te_a_b_oo_k__a_bohuotw computers could be made to 1936 work as universal machine