课件20张PPT。GrammarUnit 4 Numbers To learn cardinal and ordinal numbers. To learn instructions about numbers.1. The number of students in our class is 54.
2. I’d like one grain of rice for the first square of the chessboard,…
3. It is worth three hundred.
4. The little boy was born in 11 Dec. 2008.
5. Mo Yan won the Nobel Prize for Literature in 2012.
6. Who is the woman, the second in the second line? 基数词的用法
cardinal numbers 1.The number of students in our class is 54.
2.I’d like one grain of rice for the first square of the chessboard, two for the second, four for the third,…We use cardinal numbers to count things.基数词表示数量的多少,常用来谈论数目、时间等,如:eleven miles,nine o’clock等。“几十几”的十位与个位间要加连字符“-”。
三位数须在百位数和十位数(若无十位数则和个位数)之间用and连接。
当hundred, thousand, million, billion等词前面有具体数词修饰时,必须用单数。In the cardinal numbers, we do not add –s to hundred, _______ and _______.
With large numbers, we put _______ between hundred and ten.thousandmillionand序数词的用法
ordinal numbers1.Who is the woman, the second in the second line?
2.I’d like one grain of rice for the first square of the chessboard, two for the second, four for the third,…We use ordinal numbers to show the order of things.序数词表示事物的顺序,常用来谈论日期、楼层、位置等,如:on 10th May等。基数词变序数词的口诀
基变序有规律,多数词尾th,
1、2、3特殊记,词尾字母t/d/d,
8去t,9减e,f来把ve替,
遇y变为i和e,结尾加上th,
若是遇到几十几,只变个位就可以。-th基数词和序数词的用法eight o’clockhalf past eight/eight thirtyten to nine/eight fiftythe sixth of Maynineteen ninety-five
seventeen o three
two thousand
two thousand and eightLesson Three
Part Two
Unit Four
World War I
Room 603
Bus (No.) 761the Third Lesson
the Second Part
the Fourth Unit
the First World Warseven five eight nine zero two three2firstthirdfourthtwelfth19twenty-thirdtwenty-eighthThe students are standing in a line. They each have a number (from 1 to 28). Fill in the blanks with the cardinal numbers on the left or ordinal numbers on the right.1. 8+7
Add 8 and 7.
2. 19-11
Subtract 11 from 19.
3. 13+7=20
13 plus 7 is/equals 20.
4. 10×3=30
10 multiplied by 3 is/equals 30.
5. 36÷6≡6
36 divided by 6 is/equals 6. 3+9
9-3
3×9
9÷3Add 3 and 9.
Subtract 3 from 9.
Multiply 3 by 9.
Divide 9 by 3.3+9=12
9-3=6
3×9=27
9÷3=33 plus 9 equals/is 12.
9 minus 3 equals/is 6.
3 multiplied by 9 equals/is 27.
9 divided by 3 equals/is 3.用英语描述算式时,多用祈使句。这些祈使句由表示加、减、乘、除的动词开头,但要注意每个动词各自的搭配习惯。值得注意的是,上述几个结构中的3 plus 9, 9 multiplied by 3等作主语,要把它们看成是一个整体,谓语动词要用单数形式is或equals。I. 根据句意,用英语写出括号中所给数字的正确形式。
1. You can buy sportswear on the _____ (5) floor in the shopping centre.
2. The new building is about _______ (20) metres tall.
3. There are _____ (7) days in a week, and Saturday is the _______ (7) day.
4. _________________________ (621) people from China took part in the _______ (30) London Olympic Games.
5. Zhang Yining got the ____________ (100) Summer Olympics gold medal for China in ____________________ (2004). fifthtwentysevenseventhSix hundred and twenty-onethirtiethone hundredthtwo thousand and fourII. 请在横线上填写适当的单词。1. Subtract 10 _____ 14.
2. 90 ______ 60 equals 30.
3. ____ 9 and 22.
4. 11 multiplied by 3 is ___.
5. 15 divided by 5 ________ 3.fromminusAdd33is/equals III. 根据句子意思填空。1. Teacher’s Day is on the _____ of September.
2. Three plus (加) six is ____.
3. There are ______ months (月) in a year.
4. 6 multiplied by 5 is _____.
5. Tree Planting Day is on the ______ of March.tenth nine twelve thirty twelfthIV. 写出下列数字的单词形式。5th _____ 18 ________ 20 ________ 30 _____ 27____________ 59 ________ 93 ___________ 100 _____________
598 __________________________
970 ______________________
2,008 ____________________
5,069 _________________________
800, 000,000 ___________________
8, 000, 000, 000 ___________ fifth eighteen twenty thirty twenty-seven fifty-nine ninety-three one(a) hundred five hundred and ninety-eight nine hundred and seventy two thousand and eight five thousand and sixty-nine eight hundred million eight billionHomework1. Make some sentences using numbers. (at least 10)
2. Finish the exercises in Learning English.
3. Preview Speaking on page 26.