初中英语沪教牛津版（2024）八年级上册Unit 2 Numbers精品ppt课件

这是一份初中英语沪教牛津版（2024）八年级上册Unit 2 Numbers精品ppt课件，共24页。PPT课件主要包含了数词概述，两位数以内的基数词，几十几的基数词，三位数的基数词，千百万亿，-19 ，-90 整十数，基数词，读出下列数字，thousand等内容，欢迎下载使用。

请用英语朗读下面的数字。
1. (1) 0.03(2) 1.75(3) 23.482. (1) 4% (2) 94%3. (1) 20 July, 1998 (2) Oct. 1st, 20134. (1) 7:15 (2) 9:30 (3) 10:45 (4) 12:005. (1) 639 148 (2) 945 8204 (3) 7339 2318
Part I Review
★ 数词的定义表示数目多少或顺序先后的词叫数词。★ 数词的分类：数词分为基数词和序数词。★ 基数词作用：表示数目或数量多少。★ 序数词作用：表示顺序和等级。★ 数词在句中的成分：可作主语、宾语、表语、定语和同位语等。
Part II While-Learning
★ 1-12的基数词：ne, tw, three, fur, five, six, seven, eight, nine, ten, eleven, twelve.★ 13-19的基数词：以-teen结尾。thirteen, furteen, fifteen, sixteen, seventeen, eighteen, nineteen.★ 20-90的整十数基数词的表示方法：均以-ty结尾twenty, thirty, frty, fifty, sixty, seventy, eighty, ninety.
★ 几十几的基数词：十位数与个位数之间要用连字符“-”连接，如：85 — eighty-five★ 三位数的基数词：在百位和十位（若无十位则和个位）之间用and连接。如：148 — ne hundred and frty-eight★ 多位数的表示方法：从个位开始三个为一级，分为个级，千级，百万级和十亿级，读的时候从高位开始按照三位数的读法读出再加上表示级别的词。如：31,415,923 读作：thirty-ne millin fur hundred and fifteen thusand nine hundred and twenty-three
Things t rememberhundred (百), thusand (千), millin (百万), billin (十亿)前面有数词时后面不加s.Fr example:5000 — five thusand 表示不确定的数目时后面加s，再加单词f. Fr example:hundreds f 成百上千的；thusands f 成千上万的
★ 基数词的写法1）每三位数算一个单位，三个0为千，六个0为百万，9个0为十亿。2）长的基数词则要用逗号，从右向左三位三位地分开。写出下面数字：1. three thusand eight hundred and sixty-tw2. eighteen thusand nine hundred and seventy-tw3. fur hundred and eighty-nine thusand, nine hundred and thirty-tw4. tw thusand, three hundred and seventy-eight 5. ne thusand, twenty-nine 6. eight thusand, fur
7,002 45,256 6,302,876 652 20,435 64,265,123
seven thusand, tw
frty-five thusand, tw hundred and fifty-six
six millin, three hundred and tw thusand, eight hundred and seventy-six
six hundred and fifty-tw
twenty thusand, fur hundred and thirty-five
sixty-fur millin, tw hundred and sixty-five thusand, ne hundred and twenty-three
3 three 13 thirteen 20 twenty 70 seventy11 eleven 15 fifteen 30 thirty 82 eight-tw12 twelve 18 eighteen 50 fifty 98 ninety-eight
100 ne hundred200 tw hundred375 three hundred and seventy-five
A Cardinal and rdinal numbers
We use cardinal numbers t cunt things.
1,000 ne thusand4,189 fur thusand ne hundred and eighty-nine15,362 fifteen thusand three hundred and sixty-tw100,000 ne hundred thunsand285,643 tw hundred and eight-five thusand six hundred and frty-three
1,000,000 ne millin3,367,982 three millin three hundred and sixty-seven thusand nine hundred and eighty-tw
Wrk ut the rule
In the cardinal numbers, we d nt add -s t hundred, _________and__________.With large numbers, we put _________ between hundred and ten.
We use rdinal numbers t shw the rder f things.
1st first7th seventh13th thirteenth19th nineteenth2nd secnd8th eighth14th furteenth20th twentieth3rd third9th ninth15th fifteenth21st twenty-first4th furth10th tenth16th sixteenth33rd thirty-third5th fifth11th eleventh17th seventeenth40th frtieth6th sixth12th twelfth18th eighteenth100th hundredth
We frm mst rdinal numbers by adding ________t the cardinal numbers. There are exceptins, like first, secnd and third.
The students are standing in a line. They each have a number (frm 1 t 28). Fill in the blanks with cardinal numbers n the left r rdinal numbers n the right.
1 May May is the (1) .(2) Alan Alan is the secnd. 3 Danny Danny is the (3) . 4 Jane Jane is the (4) . 12 Peter Peter is the (5) .(6) Alice Alice is the nineteenth.23 Steve Steve is the (7) .28 Ze Ze is the (8) .
twenty-third
twenty-eighth
Read the fllwing numbers.
tw thusand five hundred and thirty-fur
twenty-five thusand three hundred and frty-tw
tw hundred and fifty-three thusand fur hundredand twenty-three
tw millin five hundred and thirty-fur thusandtw hundred and thirty-three
twenty-five millin three hundred and frty-twthusand three hundred and thirty
B Instructins abut numbers
Add 3 and 9. (3+9)Subtract 3 frm 9. (9-3) Multiply 3 by 9. (3x9)Divide 9 by 3. (9÷3)
3 plus 9 equals/is 12.(3+9=12)9 minus 3 equals/is 6.(9-3=6 )3 multiplied by 9 equals/is 27. (3x9=27)9 divided by 3 equals/is 3.(9÷3=3)
Things t remember
Plus and minus are prepsitins.
Read the instructins alud.
Add 2 and 10.
Subtract 2 frm 10.
Multiply 2 by 10.
Divide 10 by 2.
Read the statements alud.
2 × 10 = 20
2 plus 10 equals/is 12.
10 minus 2 equals/is 8.
2 multiplied by 10 equals/is 20.
10 divided by 2 equals/is 5.
1 S1: A 11 1. S2: p equals/is . ( )2 S1: S 5 13. S2: m equals/is . ( )3 S1: M 7 8. S2: m by equals/is . ( )
In pairs, cmplete the sentences like thse in Table I and Table II.
4 S1: D 16 4. S2: d by equals / is . ( )5 S1: A 9 6. S2: p equals / is . ( )6 S1: A 14 and 4 and d the answer by 2. S2: p and d the answer by equals / is . ( )
(14+4)÷2= 9
一、根据句意，填入适当的数词1. Thursday is the _________ day f a week in the West.2. Autumn is the _________ seasn f a year.3. Christmas is n December the ___________ each year.4. August is the ___________ mnth in a year.5. June the _________ is Children’s Day.
twenty-fifth
Part III Pst-Learning
二、用括号内所给单词的正确形式填空。1. This is his (thirty) nvel.2. This happened at the beginning f the (twenty-ne) century.3. Mther’s Day is n the (tw) Sunday in May.4. Althugh he gt the (fur) place in the cmpetitin, that was gd enugh fr him.5. Tmrrw is my grandmther’s (eighty-nine) birthday. We will have a big party fr her.
twenty-first
eighty-ninth
三、选择最佳答案填空。 ( )1. July is mnth f a year. A. six B. the sixth C. seven D. the seventh( )2. Five dllars is a lt f mney. A. millin B. millins C. the millin D. the millins( )3. The beautiful htel is abut years ld. A. hundred f B. a hundred C. a hundred f D. hundreds