课件20张PPT。 Grammar(1) Cardinal and ordinal numbers
基数词和序数词
(2) Instructions about numbers 数字的简单运算What is cardinal numbers?基数词cardinal numbers
是表示目的的词，简单来说我们用基数词来数数，表示单位个数，数目；基数词有1,2,3,4…
one two three four…在基数词中，表示几百，几千等时，英文中的“百，千，百万”等后不加s。如:300写成 “three hundred”而不是 “ three hundreds”
E.g.
About ______ films were shown during the 15th Shanghai International Film Festival.
A. two hundred of B. two hundreds of
C. two hundred D. two hundreds.Read the numbers and find rulesthousandmillionand数字读法：
英语数字中读法是三位一分，只有百，千，百万，十亿，万亿，而且在写较大的数字时，一般在百位和十位中间加“and”.
如34,567读成
“thirty-four thousand, five hundred and sixty-seven”
Book B P19 ExerciseWhat is ordinal numbers?序数词ordinal numbers
简单来说是用来表示顺序，有“第几”之意，如: 第一; 第二；第三…
the first; the second; the third…
序数词的构成一般是在基数词的后面加上“th”,但也有例外的，如first, second and third.--th first 2 third fourthtwelfthtwenty -third twenty-eighth 191.―How long is the river?
―It’s________meters.
A. about three hundred and seventeen
B. about two hundreds and forty-five
C. more than two hundreds
D. less?than?three?hundreds?and?seventy
2.―Can you write the number eight-four thousand, six hundred and twenty-six?
―Yes, it is__________.
A. 84662 B. 84626 C. 48662 D. 486263. －How many students are there in your school?
－There are __________.
A. the six hundred and sixty-five
B. six hundred sixty-five
C. six hundreds and sixty-five
D. six hundred and sixty-five
4. Han Meimei is ________to arrive at school today. No one arrived earlier than her.
A. the one B. the first
C. first one D. 1st “加减乘除”的表达：
加：add; plus
减：subtract; minus
乘：multiply
除：divide
(其中plus, minus为介词，其余为动词，及物动词)Language points1. Multiply 7 by 8 “7乘以8”,
其中multiply是及物动词
2. “7 multiplied by 8 is 56”中，is是谓语动词；multiplied在这里是过去分词表被动Tips1.我们把数看成一个整体，所以在进行数字运算得出结果时，谓语动词用单数is/equals（等于）
2. 下列选项能正确表达“11+1=12 ”
A: “11 add 1 is 12.”
B：“11 plus 1 equals 12.” 因为add 和is 都是动词；plus是介词 ubtract from13 inus 5 8 13-5=8 ultiply by7 ultiplied 8 56 7×8=56 ivide by16 ivided 4 4 16÷4=4 dd and9 lus 6 15 9+6=15 dd ivide 14 lus 4 ivide 2 9 (14+4) ÷2=9Correct the mistakes1. 2 add 5 is 7.
______________________________________.
2. 7 subtract 3 is 4.
______________________________________.
3. 25 divide by 5 equal 5.
______________________________________.
4. Multiply 3 by 9 equal 27.
______________________________________.2 plus 5 is 77 minus 3 is 4.25 divided by 5 equals 5. 3 multiplied by 9 equals.1. －_______7 by 8.
－7 ______by 8 equals 56.
A. Multiply; multiplied
B. Multiply; multiply
C. Multiplied; multiply
D. Multiplied; multiplied
2. About ______ films were shown during the 15th Shanghai International Film Festival.
A. two hundred of
B. two hundreds of
C. two hundred
D. two hundreds.3. －My father’s __________ birthday is coming.
－So we will put 42 candles on the cake.
A. 42 B. the 42th
C. the fourty-second D. fourty-second
4. －Add 23 and 5.
－23______5 ______28.
A. adds; is B. plus; is
C. plus; are D. add; is
5. －________ 5 from 10
－10 minus 5 ______2.
A. Minus; equals B. Subtract; is
C. Minus; is D. Subtracted; are课件15张PPT。ListeningWe can express numbers in different ways.(zero) point two five seventeen point one seven twenty-seven per cent the eleventh of December, two thousand and eight one fifteen/(a) quarter past one three four one, double two zero five/ three four one, two two o five0.25
17.17
27%
11 Dec.2008
1:15
341 2205Try to read the numbers again!!1.What’s today’s date? It’s the eleventh of October. 。
(1) date日期；问日期还可以用What’s the date today?
区别:问星期：What day is it today?
(2) 回答日期时要用序数词： 如9月10日： the tenth of September。2.Two thirds of them take part in after-school activities。他们当中有三分之二参加课外活动.
(1) two thirds: 3分之2；分子用基数词，分母用序数词，分子大于1时，分母序数词用复数形式。
(2)after-school activities“课外活动”
3.About twenty-one per cent of the air is oxygen。空气里大约21%的气体是氧气.
per cent 也常写成一个单词形式percent; 百分比或者分数修饰名词作主语，谓语动词跟名词一致。
E.g: 30% of the students are from HK.
30% of the land is polluted.Exercise1.Three Fourths of the apple _________ rotten. It’s smelly.
A. are B. were C. was D. is
2.—What time is it now?
—It’s __________.
A. ten thirty B. half pass nine
C. seven tenth D. a quarter after one
3.The man will be given _________ pay if he wants to work on Sundays.
A. two B. second C. double D. both4. —What_____________today?
—It’s the twenty-sixth of December.
A. day is it B. date it is C. is the day D. is the date
5. __________of the students would like to play computer games at weekend.
A. One fourths B. Five sixths C. Three fourth D. Seond threes
Book B ListeningA P22 --When is your birthday?
--It is on 7 July月 年Now, we are going to listen to some persons’ birthday.
Listen to the conversation and fill in the blanksBook B ListeningB P22Book B ListeningC1 P23√√√√√Listen again and finish C228football match32cinema204030computer game课件18张PPT。More practiceCounting before numbersBrainstormingBefore numbers, what did ancient people use to count things long time ago?Read the online article and then complete the flow chart about the development of counting methods.Counting before numbers12345 their fingers and even their toes small marks on sticks and bones tokens made from clay or small stones systems of written the Hindu-Arabic systemLanguage points1. Before the invention of written numbers, people used many different ways to count things.在文字数字发明之前，人们用很多不同的方式来算数
(1)invention n. “发明”；v.invent; n.inventor
(2)count v. “计算，计数”。
(3)use…to do “用…来做某事”。2. However, they could only count small numbers in this way.然而，他们仅仅以这种方式来算数目小的数。
(1)however “然而”；后面有逗号，同义词but后直接加内容。
(2)in this way “以这种方式”。3. After that, they began to make small marks on sticks and bones.那以后，他们开始在棍子和石头上作小标记。
begin to do sth. “开始做某事”， 相当于begin doing sth.
begin with…“以…开始”
begin可与start互换。4. This helped them count bigger numbers.这帮助他们计算更大的数目。
help sb.do sth.“帮助某人做某事”，动词不定式to常省略。
也可用help sb. with sth.;有时也可直接用help do sth.5. They used them to count things like the ways of the month, the amount of food and the number of animals they had.
人们使用他们来算数，像月份的方式，他们拥有的食物的数量，动物的数目等
(1) the amount of “…的数量”后加不可数名词。
(2) the number of “…的数目”后加可数名词的复数形式。6. Then people began to use tokens made from clay or small stones.然后人们开始使用用黏土或小石头制成的代币.
(1) token “代币”；clay “黏土”。
(2) made from… 在这里是过去分词短语作后置定语。7. They often put the tokens on pieces of string so that they could carry them around easily.人们经常把代币串在绳子上以便容易携带。
so that “以便”；另有用法so…that…“如此…以致…” 其中so 后加副词或形容词；that后加句子。
如：He was so angry that he could not say a word.8. This developed into tools like the abacus.这发展成了像算盘这样的一些工具
(1)develop into “发展成…”“开发成…”。
(2) like介词“像”。
developed “发达的”，
developing “发展中的”,
development n. 发展9. Finally, people began to develop systems of written marks to show different numbers, and this led to the Hindu-Arabic system.
最后，人们开始开发书写标记的方法来表示不同的数字，而这通向了印度阿拉伯系统。
(1)system “系统；制度；方法”
(2) lead to “引起，导致，通向…的路”。lead 过去式是led; lead sb. to…“把某人带领到...”。 Exercise1. At weekends, I usually help my mum ________ some housework.
A. to doing B. do
C. does D. for doing
2. I have many hobbies________ singing, playing chess and so on.
A. are like B. like
C. for example D. look likes3. The old farmer are counting ________ money and _________ animals he had.
A. the amount of; the number of
B. the amount of; the amount of
C. the number of; the amount of
D. the number of; the number of
4. 吃完晚饭后，他开始做作业了。
After dinner, he ______ ________ _______ his homework.
5. 《中国好声音》以这种方式吸引越来越多的观众。
Voice of China attracts more and more audience _______ _______ ______.
6. 他这次小小的错误引起了巨大的损失。
His mistake _______ ________ a big loss this time. started to do in this way led to课件21张PPT。Unit 2 NumbersWhere can you see numbers? What do the numbers mean?A12310:1052617.83.90People around the world write numbers in different ways.
Chinese:
English:
Romans:
Arabic:一，二，三，四，五……One, two, three, four, five……1, 2, 3, 4, 5……The king and the rice Reading AB Before you readB Before you read1. Who are the people in the first picture?
A. The king and his son
B. The king and his brother
C. The king and an old man
2. What are they doing?
A. Playing chess
B. Growing rice
C. Playing cards
3. Where did the story probably happen?
A. In China.
B. In India.
C. In Japan.CABFirst-Readingin India wise old man the wise old man any prize a long time The old man enough riceSecond-ReadingThe king’s favourite game was chess.“Is that all?”“Wouldn’t you like gold or silver instead?”The king quickly realized the problem-even with all the rice in the country, he would still not have enough rice to put on all the squares!ExercisewiseprizepromisedoublerealizedRetell the storyWhere
Who
What: the beginning
the middle
the endLanguage points1. A long time ago, there was a king in India。很久以前，印度有位国王
a long time ago.意为“很久以前”；
there be 结构中，谓语动词“就近原则”：There were two dogs behind me。
India :印度，位于亚洲南部的国家。
Indian adj.印度的，印第安人的；
n. 印度人，复数Indians。 2. One day, a wise old man came to the palace and the king challenged him to a game.
challenge，动词，
搭配challenge sb. to sth意为“向某人挑战……”；
名词，意为“挑战”，
如：Every challenge is an opportunity 3.The king promised the old man, “You can have any prize if you win the game.”
Promise: v. 许诺；承诺 promise sb. sth意为“承诺某人某事物”；
另可作n，如:make a promise “做出承诺”。
Prize: 奖赏；奖品;可数名词，多指在各类竞赛竞争中所获得的奖励 翻译：4.“If I win the game, I’d like one grain of rice for the first square of the chessboard, two for the second, four for the third, and then double the amount for each of the rest of the squares. ”
如果我赢了，我想要在棋盘的第一个方格中放1颗谷粒，第二个方格放2颗谷粒，第三个方格放4颗谷粒，依次类推，每个方格的谷粒数目是前一个的两倍。 grain n. 谷粒 可数n,尤指小麦、玉米和水稻。
常有搭配：a grain of…一粒…如： a grain of wheat
chessboard n. 国际象棋棋盘
chessboard是由chess和board合成的名词，叫“合成词”;
double v. （使）加倍
double 动词，如：double the salary “加倍工资”；形容词，意为“两倍的；双重的”如：double standard “双重标准”。
amount n. 数量；数额
an amount of…“许多…”后跟不可数名词
如：an amount of homework “许多作业”。
the amount of…“…的数量”后加不可数名词
rest n. 剩余部分
rest,名词，剩余部分；the rest of…“剩余的…” 5. “Wouldn’t you like gold or silver instead?”. 你反而不想要金子银子吗
(1) gold 金子；黄金 ,不可数名词，也可作形容词，意为“含金的；金色的” 。
(2) instead，副词，放在句末。
instead of“(是)…而不是…”后跟名词，动名词 6. So the king ordered his men to collect a bag of rice.
(1)order sb. to do sth.命令某人去做某事。
(2)collect这里指“去取”，另还表示“收集，收藏”名词：collection
(3)a bag of rice “一袋稻米”; rice不可数；
a bag of pears. Two bags of rice7. He put one grain on the first square, two on the second, and so on.
他把1颗谷粒放在第一个方格上，2颗谷粒放在第二个方格上，依次类推。
and so on“依次类推”；另还有“等等”之意。8. The king quickly realized the problem—even with all the rice in the country, he would still not have enough rice to put on all the squares. 国王很快就意识到问题—即使用上全国的稻米，他也没足够的稻米放上所有的方格。
(1) quickly 为副词修饰realize。
(2) with 介词，在这里意为“用”
(3) enough
修饰n.时，放n.前，如enough money;
修饰adj&adv时，放adj&adv后,如：fast enough。课件14张PPT。U2 Speaking and writingSpeakingIn most sentences, we use the weak forms of these wordsHe went to the hospital and visited a friend.Mandy’s homeworkJoyce’s homeworkFollow the example to practiceU2 writingA report with numbers数字交通事故Rise:上升 fall:下落，下降 August 234 220 SeptemberOctober rose239 fell August 224 NovemberPossible versionThe graph shows that there were 123,000 students at junior high schools in May’s city in 2009. In 2010, the number rose to 125,000 and then fell to 120,000 in 2011. In 2012, the number fell again to 113,000.
