Chapter 4 Numbers：Everyone’s language

一. 教學內容：chapter four: reading 二. 重點詞匯：1. a decimal number 小數 2. a pair of odd numbers 一對奇數  a pair of 是一對，一雙的意思：a pair of shoes, a pair of glasses    odd 是形容詞，意思是奇數的數字.3. even numbers 偶數4. a is better than b 這是一個比較級，意思是a比b好 e.g.: this apple is better than that one.your brain can calculate better than a computer.注意：比較級是形容詞的比較級＋than 5. at least 至少  e.g.: everyone knows at least two languages.6. ancient numbers 古代數字，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 the 8. in tens 十進制9. system of numbers 數字系統  system 系統10. consist 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 right 在右邊15. square root  平方根16. calculating machine 計算器 calculate（v.）計算 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 這個問題的答案20. it takes sb. sometime to do sth. 花費時間做某事e.g.: it takes me fifty seconds to find the answer.21. use …to  用……來做……    e.g.: use your own living computer to solve the problem. 三. 重點句子：1. every one knows at least two-his or her own language and the international language of numbers. 每個人至少懂兩種語言—他或她的母語以及國際通用的數字語言。（1）at least 起碼，至少e.g.: he’s going away for at least a week. 他起碼一星期出去一次。 （2）own＝belonging to oneself 自己的，屬于自己的。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字。（1）times 的用法：times 時代，日子，時勢，情況e.g.: some old people fall behind the times. 一些年紀大的人跟不上時代了。in modern times, computers have been used more and more widely in the world.    在現代，計算機被越來越廣泛地應用。（2）times  還可以表示倍數，次數。一次用once，兩次用twice，三次以上用 ：基數詞＋timeseg: how many times have you been to the great wall?