牛津沈陽版英語八上Chapter4Numbers二

1、chapter four【本講教育信息】一. 教學(xué)內(nèi)容：chapter four: reading二. 重點(diǎn)詞匯：1. a decimal number 小數(shù) 2. a pair of odd numbers 一對(duì)奇數(shù) a pair of 是一對(duì)，一雙的意思：a pair of shoes, a pair of glasses odd 是形容詞，意思是奇數(shù)的數(shù)字.3. even numbers 偶數(shù)4. a is better than b 這是一個(gè)比較級(jí)，意思是a比b好 e.g.: this apple is better than that one.your brain can calcu

2、late better than a computer.注意：比較級(jí)是形容詞的比較級(jí)than 5. at least 至少 e.g.: everyone knows at least two languages.6. ancient numbers 古代數(shù)字，ancient 古代的，ancient woman 古代女子7. in many different ways 用許多不同的方法。way 方式，方法 in the same way 用同一種方法 注意: same前要加定冠詞 the8. in tens 十進(jìn)制9. system of numbers 數(shù)字系統(tǒng) system 系統(tǒng)10. c

3、onsist of 由組成的 e.g.: our class consists of 47 students. from to : 從到eg: it takes me 20 minutes from school to the park.11. on the abacus 在算盤上 這里用的是介詞on 而不是in 12. on the accurate 在金屬絲上13. from the bottom 從底部，bottom 底部，at the bottom 在底部 e.g.: there is some water at the bottom of the bottle.14. on the

4、right 在右邊15. square root 平方根16. calculating machine 計(jì)算器 calculate（v.）計(jì)算 17. in a flash 一瞬間18. whole lifetime 一輩子 in the lifetime 在一生中19. give an answer 給出答案 the answer to the question 這個(gè)問題的答案20. it takes sb. sometime to do sth. 花費(fèi)時(shí)間做某事e.g.: it takes me fifty seconds to find the answer.21. use to 用來做

5、 e.g.: use your own living computer to solve the problem.三. 重點(diǎn)句子：1. every one knows at least two-his or her own language and the international language of numbers. 每個(gè)人至少懂兩種語言他或她的母語以及國際通用的數(shù)字語言。（1）at least 起碼，至少e.g.: hes going away for at least a week. 他起碼一星期出去一次。 （2）ownbelonging to oneself 自己的，屬于自己的。

6、前面要有人稱物主代詞。e.g.: i saw it with my own eyes. 我親眼所見。do it in your own ways .用你自己的方式做這件事。2. in ancient times, people wrote numbers in many different ways.在古代，人們以不同的方法書寫數(shù)字。（1）times 的用法：times 時(shí)代，日子，時(shí)勢，情況e.g.: some old people fall behind the times. 一些年紀(jì)大的人跟不上時(shí)代了。in modern times, computers have been used m

7、ore and more widely in the world. 在現(xiàn)代，計(jì)算機(jī)被越來越廣泛地應(yīng)用。（2）times 還可以表示倍數(shù)，次數(shù)。一次用once，兩次用twice，三次以上用 ：基數(shù)詞timeseg: how many times have you been to the great wall?你去過長城幾次？（3）times還可以表示乘。three times seven equals twenty-one. 三乘七等于二十一。in many different ways 用不同的反復(fù)法。 in .way e.g.: however, they nearly all counte

8、d in the same way-in tens. 然而，他們幾乎都用相同的方式數(shù)數(shù)，都是十進(jìn)制。in this way, he has begun his own private “telephone” service.就這樣，他開始了自己的私人電話業(yè)務(wù)。please answer my questions in different ways. 請(qǐng)用不同的方式回答我的問題。3. the system of numbers that nearly everyone uses today consists of the numbers from 1 to 9 and 0.現(xiàn)在幾乎每個(gè)人所使用的

9、數(shù)字系統(tǒng)包括數(shù)字1-9和0。consist of 由構(gòu)成，相當(dāng)于 be made up of.e.g.: the football team consists of 11 members 。足球隊(duì)由11個(gè)隊(duì)員組成。the medical team is made up of three doctors and five nurses.醫(yī)療隊(duì)由三個(gè)醫(yī)生和五個(gè)護(hù)士組成。4. the indians first invented and developed the 1 to 9 system of numbers.印度人首先發(fā)明并發(fā)展了1-9的數(shù)字系統(tǒng)。（1）invent 做動(dòng)詞，意為發(fā)明。inve

10、ntion 是（發(fā)明），inventor（發(fā)明家）（2）invent 與discover的區(qū)別：invent 指發(fā)明原來不存在的東西。discover指發(fā)現(xiàn)原來就存在但是一直不被認(rèn)識(shí)的東西。e.g.: bell invented the telephone in 1876. 貝爾在1876年發(fā)明了電話。who discovered american in 1492? 是誰在1492年發(fā)現(xiàn)了美洲大陸？5. abacuses are so fast and accurate that people still use them today.算盤運(yùn)算又快又準(zhǔn)確，以至于現(xiàn)在人們?nèi)匀辉谑褂盟?。so th

11、at：如此以至于 so 是副詞，后面接形容詞或副詞。如果后面跟的是名詞，要用suchthat.。e.g.: she is so weak that she cant carry the box.she is too weak to carry the box.她如此虛弱以至于搬不動(dòng)那個(gè)箱子。he is such a clever boy that everyone here loves him.他是如此聰明的孩子，以至于這里的每個(gè)人都很喜歡他。6. computers are very powerful calculating machines.computers are very power

12、ful machines that can calculate.電腦的運(yùn)算功能非常強(qiáng)大。7. some people call the brain a living computer.一些人把大腦稱為活電腦。call: 稱呼，叫，接復(fù)合賓語形式： call賓語名詞（補(bǔ)語），是稱某人為e.g.: we call him tom .我們叫他湯姆。8. shakuntala devi is a lady from india with an amazing brain.沙昆塔拉戴維是一名有著令人驚異的頭腦的印度女士。amaze（v.）使吃驚。 amazement（n.）不可數(shù)，驚異，詫異amazing 與amazed 都是形容詞，區(qū)別是：amazing 令人驚異的，amazed感到驚異的e.g.: i was amazed to find that he had got 100 marks.由于他拿到100分，所以我感到吃驚。the news was amazing.9. shakuntalas brain took fifty seconds to find the answer.it took shakuntalas brain fifty seconds to find the answer.sh