上海版牛津初中英语课件8A Chapter 4[1].ppt

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1、8A Chapter 4,全部,全体,整体n._ 一生n._ 相反,对(指比赛中)prep._ 下列的；接着的adj._ 女士,夫人,小姐n._ 令人惊奇的adj._ 解决,解答vt._ 上面的,上述的,上文的adj._ 错误 n._ 弄错v._ 活着的adj._ 敲打;击败v._ 理由,原因 n._ 错误地 adv._,whole,lifetime,against,surprising,掌握词语,following,solve,above,mistake,mistake,alive,beat,reason,wrongly,lady,零 n._加v._ 加上prep._某数除某数；某数除以某数

2、v._ 划分 v._度；度数n._ 计算；估算 v._大脑 n._(常用作复数）时代；时期 n._数,计算 v._ 系统,体系n._发明；创造v._ 发展；发育；成长v._发明；创造n._ 强大的，作用大的 adj._,zero,add,plus,divide,divide,degree,calculate,brain,time,count,system,invent,develop,invention,powerful,小数 n._量角器n._量；测量v._角度 n._奇数的，单数的 adj._圆规 n._分数n._减；减去；减掉 v._乘；使相乘 v._百分数,百分率,百分比n._ 偶数

3、n._相等的adj._相等的事物(或数量)n._等于,比得上 vt._,认知词汇,decimal,protractor,measure,angle,odd,compasses,fraction,subtract,multiply,percentage,even,equal,equal,equal,特别；尤其adv._希腊人,希腊语n._罗马人n._埃及人n._用于计算的 adj._算盘n._准确的 adj._有孔的珠子 n._金属丝,电线,电缆n._表示；表现；相当于vt._电子的 adj._平方根 _数量n._,认知词汇,especially,Greek,Roman,Egyptian,cal

4、culating,abacus,accurate,bead,wire,represent,electronic,square roots,amount,timewhole ladyreason zerodegree brain system invention lifetime mistakedecimal fraction,n.,the times时代The times are different,the（或形容词性物主代词）whole+单数名词the/his whole family;the whole class;,reasonable合理的adj.,for these reasons,

5、invent v.invention n.inventor n.,The great inventor invented many inventions,wireamount protractorangle compassespercentage abacusbeadRomanGreekEgyptian,n.,RomansRome n.罗马,Greeks(复数）Greece n.希腊,EgyptiansEgypt n.埃及,Abaci/abacuses复数,amount vi.amounts to 总计达,verb,adddivide calculatedevelop solvemistake

6、beat measure multiply Subtractequalrepresent,add up to总计,be divided into 被分成,development n.developing adj.developed adj.less developed,mistake for把和混淆,measurement n.take measurements 进行测量,take measures to improve采取措施去改善,beat sb.win a matchlose to sb.,powerfulabove alivefollowing amazingoddcalculatin

7、gaccurate electronicequal,adj.,power n.,He is still alive.alive不能做定语,只能做表语,He is_ at the _ scenery in the mountain area in France.,electricity n.,amazed,amazing,Prep.,minusagainst plus wronglyespecially,adv.,be against 反对lean against 斜靠在play against 与打比赛,Four minus two is_.,Five plus two is_.,wrong错

8、误的,two,seven,Phrases(Page48),in our daily life 在我们的日常生活中an international language 一门国际语言a decimal number 小数draw circles 画圆a pair of even numbers 一组偶数on the next page 在下一页long ago 很久以前an especially important number 一个特别重要的数字calculate better than a computer 比电脑计算得好an important part of your body 身体重要的一

9、部分different ways of doing sth 做某事不同的方法measure angles 测量角度,There are different ways of writing this word.,The protractor is used for measuring angles.,phrases(page49),1.at least 至少 2.his own language 他自己的语言 3.ancient number 古老的数字 4.in ancient times 在古代 5.in many different ways 用不同的方法 6.in the same wa

10、y 用相同的方法 7.in tens 用十进制 8.the system of numbers 数字体系 9.consist of 由组成10.numbers from 1 to 9 从1到9的11.from the biggest to the smallest 从最大到12.make it easier for sb to do 对某人来说做某事变 得更容易,It requires at least two days.,We can solve this problem in many different ways.,Water consists of hydrogen and oxyge

11、n.,Wahshing machines make it easier for people to wash their clothes.,Page49,1.one of the first 最之一 2.so fast and accurate that 如此地快和准确以致于3.the beads on the wires 算盘杆上的算盘珠4.start from the bottom wire 从底部的算盘杆开始5.the picture on the right 右边的图片6.a modern electronic calculator 一个现代的电子计算器7.calculate perc

12、entages and square roots计算百分比和平方根8.in a flash 在刹那间9.do a calculation 进行计算10.in ones whole lifetime 用某人一生的时间,Shanghai is one of the largest cities in the world.,He was so excited that he couldnt speak.,(Page49),call the brain a living computer 把人脑叫做电脑a more powerful calculator than 一个比更强大的计算器give an

13、answer 给出一个答案a lady from India with an amazing brain 一名来自印度有着惊人大脑的女士calculate like lightning 像闪电一样计算solve a problem 解决一个问题be given a problem to solve 被给一个问题来解决took fifty seconds to find 做某事花时间begin doing 开始做某事have to 不得不programme sth with instructions 用来编程序use.to do 用来做某事the problems above 以上的问题powe

14、rful enough 足够强大on page 59 在59页,It took him two hours to finish his homework last night.He _ two hours _ _his homework last night.,spent,in,finishing,Lily has to tell the truth,_ _?,doesnt,she,The book is _ _ for me to read.,easy,enough,More phrases,give a reason for your answer就答案给出理由start with 以开始

15、pay attention to 注意be quiet 安静have a seat 坐下be afraid 恐怕make a noise 吵闹be late for=come late to 迟到A multiplied by B is C A divided by B is CA total of 15 总数为15,We must pay attention to your teacher in class.,be afraid of be afraid to do be afraid that.,He handled the test tube with care,because he w

16、as _ _ breaking it.,afraid,of,3 _ _7 is 21.3乘以7等于21。,multiplied by,15 _ _3 is 5.15除以3等于5。,divided by,Page 55-60,cardinal numbers 基数词What can I do for you?copy downwronglycheck sth with sb.a gift of 35,000fellow studentsdraw a line graphNot at allrises to falls to 44%of our classmatesin the same year

17、the average age/height/weight/temperatureWhats the population of China?,Can I help you?Is there anything I can do for you?,The line graph shows the number _ _1005 in 2003,rises,to,图中表示在2006年数字再次下降到907。The line graph shows the number _ _ _ 907 in 2006.,falls again,to,练习：,一 用下列词语的适当形式完成句子 consist of s

18、tand for invent the zero do calculations better than fromto a decimal number sothat come from know about1.He walked _fast_ I couldnt catch up with him.2.Indians then _.3.The committee_ ten numbers.4.We go to school _ Monday _ Friday.5.What does T.G._in T.G.Smith?6.A very powerful machines for _.7.Wh

19、at do you _ the computers?8.He is _ me at swimming.9.0.88 is _.10.Japanese _ Japan.,so,that,invented the zero,consists of,from,to,stand for,doing calculations,know about,better than,a decimal number,comes from,综合阅读：Numbers：EveryoneslanguageHow many languages do you know?Everyone knows at least two-h

20、is or her(A)_ language and the international language of numbers.Ancient numbersIn ancient times,people wrote numbers in many different ways,as these pictures of the number 6 show.However,they nearly all counted(B)_-in tens.ZeroThe system of numbers that nearly（C）everyone uses today consists of the

21、numbers from 1 to 9 and 0.With these ten numbers,we can write any number from the biggest to the smallest.The Indians first invented and developed the 1 to 9 system of numbers.They then invented the zero.This was a very important invention because it made it easier to write big numbers and to calcul

22、ate.Calculating machinesOne of the first calculating machines was an abacus.（D）Abacuses are so fast and accurate that people still use them today.On the abacus in the picture,the beads on the wires represent ones,tens,hundreds and thousands,starting from the bottom wire.The picture on the right show

23、s a modern electronic calculator.It can add,subtract,multiply and divide.It can also calculate percentages and square roots.The picture shows a computer.Computers are very powerful calculating machines.(E)In a flash a computer can do a calculation that you could not do in your whole lifetime.（H）_,So

24、me people call the brain a living computer.Is a human brain a more powerful calculator than a computer?The following story may give an answer.Shakuntala Devi is a lady from India with an amazing brain.She can calculate like lightning.In America,Shakuntala and a very powerful computer were given this

25、 problem to(F)find an answer to.Shakuntalas brain（G）用50秒找到了答案.The computer took a minute.However,before the computer could begin calculating,someone had to program it with instructions,and that took many hours.No one had to program Shakuntala!Use your own living computer to solve the problem above.I

26、f it is not powerful enough,you will find the answer on page 59.1.在A处填入一个适当的单词:_2.在B处填入一个适当的短语:_3.将C 处改写成The system of numbers that nearly everyone uses today _ _ _ of the numbers from 1 to 9 and 0.4.将D 处句子改写为：Abacuses are fast and accurate_ _ people _ use them today.5.将E处翻译成汉语：_6.根据F的释义写一个单词：_7.将G

27、翻译成英语：_8.将H处的小标题写上：_9.From the article,can you guess“it isnt a machine,and its alive.”What does it refer to?A_ _10.Why is the invention of“0”important?,own,In the same way,is,made up,enough for,to,一闪念,solve,took fifty seconds to find the answer,Brain against computer,human,brain,Because it made it e

28、asier to write big numbers and to calculate,语法专练(A)请将方框中各类数字的不同英语表达填写在下面的表格里。,seventy-two percent,thirty-five Celsius,eleven,twelfth,thirty six point one six,four-fifths,nineteen eighty-seven,two seven four five eight double one six,December the ninth;the ninth of December,six fifty-five;five to sev

29、en,No.232bus,Room 345,(B)请将加、减、乘、除的不同表达用英语填写在下面的表格里。,6 plus 3 is 9.,Add 3 and 6,and youll get 9.,6 minus 3 is 3.,Subtract 3 from 6,and youll get 3.,3 multiplied by 6 is 18.,Multiply 3 by 6,and youll get 18.,6 divided by 3 is 2.,Divide 6 by 3,and youll get 2.,完形填空：There are 56 students in our class.5

30、6%of our classmates are boys and 44%are girls.Most of us 1_ born in the same year.The oldest student in our class is 16 years old and the 2_ is 13 years old.The 3_ age of our classmates is 15.The tallest student in our class is 189 cm and the 4_ is 152 cm.The average height of our classmates is 164.

31、The 5_ student in our class is 73 kg and the lightest is 42 6_.The average 7_ of our classmates is 52.Twenty-five of 8_ go to school by bus and forty go to school on foot.Many of us like football,Some like basketball and some like volleyball.()1.A.are B.were C.is D.was()2.A.smallest.B.least C.youngest D.shortest()3.A.average B.proper C.right D.big()4.A biggest B.highest C.smallest D.shortest()5.A.heaviest B.most C.much D.weight()6.A.km B.m C.kg D.g()7.A.heaviest B.most C.much D.weight()8.A.us B.them C.students D.ours,