人教版BOOK2第三單元WhoamI課件

1、2vUnit 3 Computers reading9Task1 Look at the pictures and the title of the reading passage. Predict what it is going to be about.Prediction10Task2 Look at these inventions. Put them in order according to the time when they appeared. After reading the passage, check to see if you were right.() analyt

2、ical machine () laptop() calculating machine () robot() PC() universal machine21456311While-readingThe development of computers.Step 2 Just have a fast readingFind out topic sentences of each paragraph.Over time I have changed quite a lot.These changes only became possible as my memory improved.Sinc

3、e the 1970s many new applications have been found for me.Step 3 More detailed reading!1936(1822)LatterAnd lattera calculating machine, in 1642an analytical machine, (in 1822), Charles Babbagea universal machine, in 1936, Alan Turinga huge computer, as large as a room, in 1940sa personal computer and

4、 a laptop, and used in offices and homes since the 1970sa calculating machine, in 1642帕斯卡計算器是由布萊斯帕斯卡(Blaise Pascal)發(fā)明的，帕斯卡計算器可以把一長串?dāng)?shù)字相加，在他的計算器中有一些互相聯(lián)鎖的齒輪，一個轉(zhuǎn)過十位的齒輪會使另一個齒輪轉(zhuǎn)過一位，人們可以像撥電話號碼盤那樣，把數(shù)字撥進去，計算結(jié)果就會出現(xiàn)在另一個窗口中。an analytical machine, (in 1822)分析機是由英國數(shù)學(xué)家查爾斯巴貝奇設(shè)計的一種機械式通用計算機。它的設(shè)計邏輯卻非常的先進，是大約100年后電子通用計

5、算機的先驅(qū)。a “universal machine”, in 1936(not a real machine, but just a mathematical model) a huge computer, as large as a room, in the 1940s尺寸（英尺） 3050電容(個)10000重量（噸）30開關(guān)(個)6000真空管(個)18800耗電（W）150000電阻(個)70000成本（1940年） $40萬ENIACtechnical words vMemory: storage or storage capacity as of a computer, disk

6、, etc. The World Wide Web These changes only became possible as my memory improved.v tubesv transistorsv small chipsv networkv World Wide WebPara.3 Find some supporting details for the topic sentence.1 minute.Since the 1970s many new application have been found for me. Since the 1970s many new appli

7、cations have been found for me.v communicationsv financev tradev robotsv mobile phonesv medical operationsv space rockets v exploring the Moon and MarsName : 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 _

8、machine 4. 1940s _ 5. 1970s _ and _My memory: _ _ _ My applications: _; _; _; _; _; _; _. 1642France Alan Turinghugesmaller and smalleranalytical calculatinguniversallaptopPCtubestransistorschipscommunicationfinancerobotmobile phonespace rocketmedical operationtradehuge computer26Paragraph 2Paragrap

9、h 3These changes only became possible as my memory improved.Since the 1970s many new applications have been found for me.Supporting detailslcalculating machinelanalytical machineluniversal machinelPCltubesltransistorslsmall chipslcommunicationslfinanceltradelrobotslmobile phones lMedical operationsl

10、space rocketParagraph 1Topic sentenceOver time I have been changed quite a lot.personification（擬人） narrative perspective: first-person narrative（敘述角度：第一人稱角度）chronological order(時間順序)main ideas and supporting details （主旨（主旨+支撐細(xì)節(jié)）支撐細(xì)節(jié)）How do we use computers in daily life?communicationentertainmentinf

11、ormationwork and jobcommerce/finance onlinecommunicationchattingsending E-mailsexpressing ideas onlinemaking new friendsentertainmentplaying gameswatching movieslistening to musicinformationreading newssearching for useful information, such as price information, job information and so onasking quest

12、ions and seeking for helpcommerce/finance onlineshopping onlinetransferring accountspaying all kinds of bills, such as water & electricity fees, cell phone fees and so onspeculating in stocks onlinework and jobusing computers to do jobsapplying for jobs onlinedoing research34SummaryI, the c_, wa

13、s a calculating machine in 1642 in F_. In 1936, I became a “u_ machine” to s_ any mathematical problem. Since the 1970s I have been used first as a P_ and then as a l_in office and h_.omputerranceniversalolveCaptopomes35Many changes have happened to my s_, so my s_ totally changed. I have been widel

14、y used in many fields, I have also been put into robots to e_the Moon and Mars.izehapexplore36Should high school students Should high school students surf the internet(surf the internet(上網(wǎng)上網(wǎng))? )?I think high school students should surf the internet because(first, secondly, thirdly)I think high schoo

15、l students should not surf the internet because(first, secondly, thirdly)37AdvantagesWe can communicate with friendsListen to the musicSee films & watch newsPlay gamesDo shoppingSave a lot of time Do a lot of useful things38DisadvantagesSome people especially the teenagers abandon (沉迷于沉迷于) themselves to the computer games and chatting on the Internet. As a result, they have little time to study .Some people use the computer wrongly. If you spend too much time on it, it will do harm to our health.39 ConclusionConclusionThere is no doubt that computer has two sides, too.