上海版牛津初中英語8ACha課件

1、上海版牛津初中英語8ACha上海版牛津初中英語8AChaPre-reading 1課時課時Reading 3課時課時Listening & language 2課時課時Speaking 2課時課時Writing & more practice 1課時課時上海版牛津初中英語8ACha上海版牛津初中英語8ACha上海版牛津初中英語8ACha5%0.82odd numberseven numbersa percentagea decimal numbera number showing degreesa fractionzero上海版牛津初中英語8AChaadd (v.), plus

2、 ( prep.)subtract (v.), minus ( prep.)multiply (v.)divide (v.)equal(n. v. adj.)上海版牛津初中英語8ACha8 2100.539013 4545%04/7 a decimal number a pair of odd numbers zero a number showing degrees a percentage a pair of even numbers a fraction上海版牛津初中英語8ACha26%2.66138418%5 2190o075%14.57730o661/845.52/3012o39%3

3、20 718/910.1Practising these numbers上海版牛津初中英語8AChaa pair of even numbersa decimal numberzeroequalsa number showing degreesa percentagea fractiona pair of odd numbersmultiplysubtract; minusa protractor (for measuring angles)compasses (for drawing circles)上海版牛津初中英語8ACha上海版牛津初中英語8ACha上海版牛津初中英語8ACha上海版牛

4、津初中英語8AChaChinese Greek Roman Egyptian 1.What number do the pictures show?2.Were they written in the same way ?ancient numbers上海版牛津初中英語8ACha2.Who invented “zero”?3.Why was it a very important invention?1.What does the system of numbers consist of ?上海版牛津初中英語8AChaCalculating machinesan abacusa compute

5、ran electronic calculatorHow many calculating machines does the paragraph mention？上海版牛津初中英語8AChaan abacusbead1.What does an abacus consist of ?2.What do the beads on the abacus represent?3. Are the top beads the biggest number or the smallest number?上海版牛津初中英語8AChaelectronic calculatorWhat can it do?

6、,calculate percentages and square roots上海版牛津初中英語8AChabrainliving computerWhy do we say computers are powerful ?上海版牛津初中英語8ACha9167486769200391580986609275853801624831066801443086224071265164279346570408670965932792057674808067900227830163549248523803357453169351119035965775473400756816883056208210161

7、29132845546805780158806771a = 23a = ? 546,372,8911.In what aspect is Shakuntala Devi special?2.How long did it take Shakuntala to find the answer, what about the computer?上海版牛津初中英語8AChaWhich do you think is more powerful,our brain or a computer?上海版牛津初中英語8ACha上海版牛津初中英語8AChaCheck the following sentenc

8、es. In ancient times, people wrote numbers in the same way.2. The system of numbers we use today consists of the numbers from 1 to 9 and 0.3. Abacuses are not so fast and accurate that people dont use them today.4. The story between Shakuntala Devi and a computer tells us that a human brain is a mor

9、e powerful calculator than a compute.TTFF上海版牛津初中英語8AChaRead carefully and complete the summary.Ancient numbers In ancient times, people wrote numbers _ _, but they are nearly counted _.Zero Everyone uses the _ 1 to 9 plus 0 (zero). The _ invented them. _ makes it _ to write big numbers and to calcul

10、ate.Calculating machines The three calculating machines: the _, the _ and the _ make our life easier.Brain against computer There was once a competition between an Indian _ and a _ in which the _ won. Computers cannot do anything by themselves. _ must program them first.indifferent waysin tensnumber

11、 systemIndians Zeroeasierabacusescalculatorscomputersladycomputerladyhuman beings上海版牛津初中英語8ACha上海版牛津初中英語8AChain the way 用 方式 in different ways in the same way on the way by the way in the way擋路Language points 上海版牛津初中英語8AChaThe system of numbers that nearly everyone uses today consists of the numbers

12、 from 1 to 9 and 0 (zero). consist of = be made up of The book consists of six chapters. 這本書由六章構成。這本書由六章構成。 The machine is made up of 10 big parts. 這臺機械由這臺機械由10個大部件組成。個大部件組成。 上海版牛津初中英語8AChaAbacuses are so fast and accurate that people still use them today.so . that . “如此如此以至于以至于”，引導結果狀語，引導結果狀語從句。從句。

13、She danced so beautifully that we all gave her full marks. 她的舞跳得如此好她的舞跳得如此好,我們都給了她滿分。我們都給了她滿分。上海版牛津初中英語8ACha若若so . that .引導的結果狀語從句含有否定意義引導的結果狀語從句含有否定意義,且且主從句主語一致時主從句主語一致時,可以與可以與too . to do sth. 結構互換；結構互換；I am so tired that I couldnt go to your party. = Im too tired to go to your party. 若主從句主語不一致若主從句

14、主語不一致,可以用可以用too . for sb. to do sth.結結構和構和not adj./adv.+ enough for sb. to do sth. (adj./adv.為原句中的反義詞為原句中的反義詞)互換?；Q。The box is so heavy that I cant carry it.= The box is too heavy for me to carry. = The box is not light enough for me to carry. 上海版牛津初中英語8ACha 若若so . that .引導的結果狀語從句含有肯定意義引導的結果狀語從句含有肯定

15、意義,且且主從句主語一致時主從句主語一致時,可以與可以與“adj./adv.+ enough to do sth.”結構互換；結構互換；The room is so big that it can hold 500 people. = The room is big enough to hold 500 people.如果主從句主語不一致如果主從句主語不一致,可以用可以用“adj./adv.+ enough for sb. to do sth.”結構互換。結構互換。The box is so light that I can carry it.= The box is light enough

16、 for me to carry.上海版牛津初中英語8AChaIt can add, subtract, multiply and divide. divide v. “分開；除分開；除”, 常與介詞連用。常與介詞連用。1. divide . by . 用用除除(盡盡) 9 divided by 3 equals / is 3. 9除以除以3等于等于3。2. divide . into . 把把分成若干部分；劃分分成若干部分；劃分 Lets divide the students into two groups. 讓我們把這些學生分成兩組。讓我們把這些學生分成兩組。上海版牛津初中英語8ACha

17、Indians first invented and developed the 1 to 9 system of numbers. invent v. “發(fā)明、創(chuàng)造發(fā)明、創(chuàng)造(不曾存在的東西不曾存在的東西)”,尤指科尤指科技上的發(fā)明創(chuàng)造。技上的發(fā)明創(chuàng)造。James Watt invented the first steam engine in the world. 詹姆斯詹姆斯瓦特發(fā)明了世界上第一臺蒸汽機。瓦特發(fā)明了世界上第一臺蒸汽機。invent的名詞形式的名詞形式:invention (發(fā)明發(fā)明); inventor (發(fā)明家發(fā)明家)。上海版牛津初中英語8AChadevelop (使使)

18、發(fā)展；成長；發(fā)育發(fā)展；成長；發(fā)育1. develop 可作及物動詞可作及物動詞,后接名詞或代詞作賓語后接名詞或代詞作賓語 The indians invented and developed the 1to 9 system of numbers.Swimming develops the muscles. 游泳能使肌肉發(fā)達。游泳能使肌肉發(fā)達。developed 發(fā)達的發(fā)達的 developing 發(fā)展中的發(fā)展中的 adjdeveloped countries developing countries上海版牛津初中英語8AChaShakuntala Devi is a lady from In

19、dia with an amazing brain. amazing “令人驚異的；令人驚奇的令人驚異的；令人驚奇的”, 通常用來修飾通常用來修飾事物事物 There are a lot of amazing adventures in the world. 世界上有很多令人驚異的冒險活動。世界上有很多令人驚異的冒險活動。amazed “感到驚奇的感到驚奇的”, 通常用來修飾通常用來修飾人人,后常接后常接at / by / 動詞不定式動詞不定式/從句等。從句等。 I was amazed to find that he had got 100 marks. 我感到很吃驚我感到很吃驚,他竟得了他

20、竟得了100分。分。 I am amazed by what you have said. 聽了你說的話聽了你說的話,我感到驚愕。我感到驚愕。上海版牛津初中英語8ACha上海版牛津初中英語8AChaA:上海版牛津初中英語8ACha祈使句是用來表示請求、命令、勸告或建議等語氣的句子。它的主語多是You（通常不說出）祈使句的構成：祈使句可分為肯定、否定兩種形式?？隙ㄐ问降钠硎咕溆蓜釉~原形開頭，分兩類； 1連系動詞 + 表語（如：形容詞、名詞等）引起。例如： Keep quiet！保持安靜！ Be a good student! 要做一名好學生2行為動詞開頭。例如： Open the door! 打

21、開門吧！ Come here！到這兒來！ 否定形式的構成是一律在肯定形式的祈使句之前加上Dont。上海版牛津初中英語8ACha 3.由let構成的肯定式的祈使句句型為： Let + 賓語 + 動詞原形 + 其它。例如： Let me have a good rest讓我好好休息一下。 以let引起的祈使句的否定形式，要視其在意思上否定了什么來決定。如否定let，則用Dont let向式；如否定let后面的不定式，則在不定式前加not，即用“Let + 賓語 + not+ 動詞原形 + 其它?！本涫?。例如： Dont let the children play football on the r

22、oad不要讓孩子們在馬路上踢球。 Lets not wait outside to gate 咱們別在門外等。 上海版牛津初中英語8ACha I. 用括號內所給動詞的適當形式填空。 1. Its an important meeting. _ (not, be )late. 2. _ (not,make) any nise! Your mother is sleeping. 3. _ (not, speak) with your mouth full of food and _ (be) polite. 4. _ ( not, talk) and _ (read) aloud. 5. _ (n

23、ot,leave) your homework for tomorrow, Larry. .上海版牛津初中英語8ACha 6. _ (look) out! A car is coming. 7. _ (give) us ten years and just see what our country will be like. 8. _ (not, let) the baby cry. 9. Wear more clothes or you _ (catch) a cold. 10. Lets _ (not, say) anything about it上海版牛津初中英語8AChaB:上海版牛津

24、初中英語8ACha+add ; plus-3 + 9 = 44subtract , minus9 - 3 = 6=equalsA: Add 3 and 9B:3plus 9 is/equals 12A: Subtract 3 from 9B: 9minus 3 is/equals 616 + 34 = 5035 12 = 23上海版牛津初中英語8AChaxmultiply, times40 x 5 =200 divide90 30 = 3A: Multiply 40 by 5 B: 40 multiplied by 5 is 200A: Divide 90 by 30 .B: 90 divid

25、ed by 30 equals 320 x 5 = 10080 16 = 5上海版牛津初中英語8ACha 祈使句祈使句+ +陳述句陳述句Orand上海版牛津初中英語8ACha3+9=12祈使句祈使句:陳述句陳述句:Add 3 and 9, and we will get 12.3 plus 9 is / equals 12.上海版牛津初中英語8ACha9-3=6祈使句祈使句:陳述句陳述句:Subtract 3 from 9, and we will get 6.9 minus 3 equals 6.上海版牛津初中英語8ACha3 37=217=21祈使句祈使句:陳述句陳述句:Multiply

26、3 by 7 ,and well get 21.3 multiplies by 7 equals/is 21.上海版牛津初中英語8ACha364=9祈使句祈使句: :陳述句陳述句:Divide 36 by 4 and the answer is 936 divided by 4 equals/is 9.上海版牛津初中英語8ACha上海版牛津初中英語8ACha15+16=31陳述句陳述句:祈使句祈使句:上海版牛津初中英語8ACha4.5115=67.65祈使句祈使句:陳述句陳述句:上海版牛津初中英語8ACha376=31祈使句祈使句:陳述句陳述句:上海版牛津初中英語8ACha273=9祈使句祈使

27、句:陳述句陳述句:上海版牛津初中英語8ACha2abciiiiii 45893 16 7上海版牛津初中英語8ACha上海版牛津初中英語8AChaA:基數詞基數詞上海版牛津初中英語8ACha一一.基數詞基數詞 1）從112分別由從one到twelve12個各不相同的詞表示。 2）從1319均以后綴-teen結尾。 3）從2090的整十數詞均以后綴-ty結尾。 表示“幾十幾”時，個位和十位之間需加連字符連字符，如twenty-one, thirty-two, forty-three等。 4）百位和十位之間要加and 5) 千和百之間不加詞 三位數以上的數，從個位往前數，每三位數加一個逗號“，”，從

28、后往前數的第一個逗 號代表thousand,第二個逗號代表million,第三個逗號是billion，注意這幾個詞不能用復 數形式，后也不能加and。 上海版牛津初中英語8ACha6）表示具體、準確的數目時，hundred, thousand, million等數詞后不能加-s, 如five hundred, six thousand, seven million等。7）當hundred, thousand等數詞與of連用，表示不具體、不準確的數目時，詞尾須加-s。如： thousands of students, millions of trees.上海版牛津初中英語8AChafour th

29、ousand three hundred and twenty-oneseven million,six hundred and fifty four thousand three hundred and twenty-one7,654,3211,987,654,3214,321one billion nine hundred and eighty-seven million,six hundred and fifty-four thousand three hundred and twenty-one上海版牛津初中英語8ACha1. hundred thousand (表示具體數字表示具體數

30、字) million billion2. hundreds thousands (表示概數表示概數) millions billions數字+ ofsome / many hundreds of+上海版牛津初中英語8AChaA2:序數詞上海版牛津初中英語8ACha序數詞 1）1st,2nd,3rd 2) 4-19th 3）以-ty結尾的表示“幾十”的基數詞，先把y變?yōu)閕，再加-eth 4）表示“第幾十幾”時，十位數的“幾十”仍用基數詞，只把個位部分變成序數詞就行了。 上海版牛津初中英語8ACha基數詞基數詞序數詞序數詞基數詞基數詞序數詞序數詞onetwelvetwotwentythreetwe

31、nty-onefourfortyfiveone hundredsixone hundred and fiveeightone hundred and twenty-nineninenineteen一一. .基數詞、序數詞基數詞、序數詞firstsecondthirdfourthfifthsixtheighthninthtwelfthtwentiethtwenty-firstfortiethone hundredthone hundred and fifthone hundred and twenty-ninthnineteenth上海版牛津初中英語8AChaA3:小數 小數點前按整數讀，小數點

32、后分別讀上海版牛津初中英語8ACha .3 point three 0.3 zero point three 36.36 thirty-six point three six上海版牛津初中英語8AChaWork in pairs S1:_(Telephone number)S2:Hello,_ This is_S1:What _ for you?S2:I _ I copied down a homework wrongly. Can I check it with you?S1: Sure, Which one?S2 Number_. _S1: _S2:Thanks,_ See you_.S1:Good bye!上海版牛津初中英語8AChaFellow students Mr Tang has given our school a gift of ￥35,000. Our group thinks we should buy these three things. First _. This will cost about ￥ _ Second, _. This will cost about ￥ _. Third ,_ This will cost about ￥ _. Have you got any questions?We should buy new