外研版 (新标准)八年级上册Unit 1 The population of China is about 1.37 billion.课前预习ppt课件
展开Unit 1 The ppulatin f China is abut 1.37 billin.
D yu knw hw many peple are there in the wrld nw?
One day, the wrld will be like this.
Hw abut China?
It’s abut 1.37 billin.
China's Ppulatin - Overview
Grasp the key wrds and key structure: nise, prepare, ntes, reprt, grw, prblem, birth, billin, fifth; Beijing is a huge city with a large ppulatin. That makes ver 131.4 millin births a year. 2. Reading aim: T be able t read and understand large numbers.3. Affectin: we shuld care mre abut the ppulatin prblems f ur cuntry.
Teaching aims
/nɔIz //prI'peə //nəuts //rI'pɔ:t //ɡrəu //hju:dʒ/ /kɔ:z /
笔记;随 笔 n.(pl.)
(grew /ɡru:)增长;增大 v.
Wrds and expressins
巨大的;庞大的 adj.
/'prɔbləm //'Iŋkri:s //bə:θ//'bIljən //fIfθ/hang n/flæt /
增大;增长 n.增大;增长 v
第五;五分之一 num.
1 Wrk in pairs. Lk at the picture and talk abut it. Use the wrds in the bx t help yu.
nise peple space traffic
2 Listen and check the crrect answer:
1 What is the ppulatin f Beijing? a) Abut 11 millin b) Abut 13 millin c) Abut 20 millin2 What is the ppulatin f Chngqing? a) Abut 28 millin b) Abut 33 millin c) Abut 36 millin
3. Listen and read
Everyday English
I can’t believe it!Hang n a minute!Great!
Then listen and read.
Betty: What are yu ding?Tny: I’m preparing sme ntes fr a reprt called “Our grwing ppulatin”.Lingling: Well, we’re in the right place t talk abut that! Beijing is a huge city with a large ppulatin. That causes a lt f prblems, such as t much traffic and nise. Betty: It’s nt nly Beijing. Ppulatin
increase is a big prblem in many cuntries. D yu knw hw many babies are brn everyminute in the wrld?Tny: N. Can yu tell me?Betty: Over 250! That makes ver 131.4 millin births a year.Lingling: I can’t believe it! Betty: The ppulatin f China is abut 1.37 billin. That’s almst ne fifth f the wrld’s ppulatin, that is, abut 7 billin. Tny: Hang n a minute! I will write that dwn t!
Betty: But in the future, China’s ppulatin wn’t grw s fast, because families are getting smaller. Lingling: Hw d yu knw all this? Betty: I wrte my reprt yesterday! Tny: Great, thanks! Nw I can write my reprt!
Babies brn every minute in the wrld:Babies brn every year in the wrld: Ppulatin f China:Ppulatin f the wrld:
Nw cmplete the ntes.
ver 131.4 millin
abut 1.37 billin
abut 7 billin
4 Chse the crrect answer.
1 Birth happens at the start / at the end f life.2 Huge means large / small.3 An increase in ppulatin means mre / fewer peple.4 Hang n a minute means wait fr a shrt time / a lng time.
7 A reprt is a lng piece f writing / a few wrds.8 A billin is a hundred / a thusand millin.
5 Making ntes means writing a lng passage / a few wrds.6 A prblem is smething easy / difficult.
Prnunciatin and speaking
5 Listen and repeat.
8,742 eight thusand, seven hundred and frty-tw.2,463,128 tw millin, fur hundred and sixty-three thusand, ne hundred and twenty-eight
1,370,000,000 ne billin, three hundred and seventy millin2,000,030,000 tw billin and thirty thusand
6 Check (√) the statements yu agree with.
1 There are t many peple in the wrld. 2 The increasing ppulatin is the biggest prblem in the wrld. 3 Peple shuld nt have t many babies.4 A city shuld nt hld mre than ne millin peple.
Nw wrk in grups and discuss yur answers.
Grammar Fcus
(一)数词 Numeral
数词是用来表示事物的数目和顺序的词。
数词的分类:1.基数词2.序数词3.分数词今天我们先来学习一下基数词。
1. 复习1—100以内的所有数字。2. 掌握百、千、万、十万、百万的表达法。
ne 1 tw 2 three 3 fur 4 five 5
six 6 seven 7 eight 8 nine 9 ten 10
eleven 11 twelve 12 thirteen 13 furteen 14
fifteen 15 sixteen 16 seventeen 17 eighteen 18 nineteen 19
2、20—90等十位数
twenty 20thirty 30frty 40fifty 50sixty 60seventy 70eighty 80ninety 90
twenty-ne 21 twenty-tw 22 ………………其它的十位数照此类推,如: thirty-ne 31 frty-tw 42 seventy-five 75 ninety-six 96
百 hundred 100 ne hundred 200 tw hundred 以此类推···· 千 thusand 1 000 ne thusand 2 000 tw thusand·········英语里没有“万”这一单位,万也用thusand表示。如:10 000 ten thusand 一万20 000 twenty thusand 两万·····
十万的说法是: 100.000 a (ne) hundred thusand 200.000 tw hundred thusand millin 百万 a (ne) millin 1 000 000 tw millin 2 000 000 ········以此类推 ······ 8 000 000 eight millin
练一练345100118,657,421
three hundred and frty-five
ne thusand (and) ne
eighteen millin, six hundred and fifty-seven thusand, fur hundred and twenty-ne
The prject lasted 5 years and cst 2 billin dllars.2. The Chinese have been making paper fr tw thusand years.3. One thusand punds is a lt f mney.
表示确定数量时 用基数词+ hundred,thusand,millin,billin
three hundred and eighty-nine
fur hundred and fifty-seven
eight hundred and ninety
six hundred and eight
1)101~999的三位数由“百位数+and+两位数组成”。 如:325—three hundred and twenty-five
102 ne hundred and tw
635 six hundred and thirty-five
2)三位数以上的数,从个位往前数,每三位数加一个逗号,从后往前数的第一个逗号代表thusand, 第二个逗号代表millin, 第三个逗号是billin,注意这几个词不能用复数形式,后也不能加and。例如: 2,648 tw thusand, six hundred and frty-eight 16,250,064 sixteen millin, tw hundred and fifty thusand, sixty-fur
确切数目与不确切数目的表达:hundred, thusand, millin, billin等前面有基数词,表示确切数目时,用单数,后直接接复数名词;如:three hundred bks ne hundred peple five thusand students seven millin starts
表示不确切数目时,这类词后加-s且与f连 用。如: hundreds f peple thusands f students millins f birds billins f lins注意:这类短语中,名词前如有定冠词、指 示代词或形容词性物主代词时,可加f, 但 表示的是范围。如:tw hundred f the wrkers工人中的二百(人)
(二)冠词 Articles
◆用冠词和不用冠词的差异
冠词是一种虚词,没有词义,没有数和格的变化,不能单独使用,只能帮助名词或起名词作用的其他词类说明其意义。 冠词分定冠词和不定冠词两大类。定冠词特指一特定名词,不定冠词泛指一般普通名词。
不定冠词有a和an两种形式,a用在以辅音开头的名词前,an用在以元音开头的名词前。它的用法如下:1.表示“一个”的意思,与数词ne相同。例如:Rme was nt built in a day. 罗马不是一天建成的;伟业非一日之功 The prject(项目,计划) will be carried ut(执行,贯策) in a year r tw.
2.表示一类人或事物。例如:A dg is a faithful(忠诚的) animal. Even a wman can d it.3.表示“每一”,相当于per,用于某些表示时 间、重量、长度等单位前。例如:He earns tw thusand yuan a mnth. The train is running sixty miles(英 里)an hur.4.表示同样的人或事物,相当于the same。例如:Birds f a feather(羽毛) flck (一群)tgether./They are peple f a kind.一群同样羽毛的鸟在一起/物以类聚,人以群分。
5.物质名词或抽象名词前用a 或an表示具体意义、制成品或种类。例如:Green tea is a wnderful tea. She is a beauty.(美人) Please give me a cffee.6.用于人名前,表示说话者对此人不认识,相当于“a certain”,也可指于某名人有类似性质的人或事物。例如:A Mr. Chen came t see yu this mrning. He wishes t becme a Newtn.
7.有些世界上独一无二的东西,如sun, mn, sky, universe(宇宙),wrld(世间,地球) ,earth (地球)等,一般前面要用定冠词,但当他们前面有修饰语时,则要用不定冠词。例如:We hpe we can see a full mn tnight.He sat in a chair, lking at a starry 布满星星的 sky.
8. 在作单数可数名词定语的形容词最高级前, 如果不表示“最”,而表“非常”,则用不定冠词。例如: That is a best dictinary. This is a mst trublesme(费事的) case. (情形,情况)9. 序数词前,一般有定冠词,但当表示“又一 个”时,则要用不定冠词。 例如:They have a secnd huse. When I sat dwn, a fifth man rse (动词,rise的过去式 “站起来”)t speak.
10. 季节、月份、日期、三餐前有修饰语时, 用不定冠词。 例如:We had a wnderful lunch. We had a very cld winter last year. 11. 用在某些固定的短语中 例如:nce upn a time (从前) in a hurry (匆匆忙忙) have a rest have a gd time have a lk all f a sudden (突然地) have a cld/fever(发热)/cugh/headache/ pain(疼痛)
Language pints
1. Beijing is a huge city with a large ppulatin. That causes a lt f prblems, such as t much traffic and nise. 北京是一个人口众多的大城市。那会引起 众多问题,比如交通拥挤,噪音污染等。 (1) ppulatin n. 人口,人数 1) 集体名词,无复数形式,在句中作主语时,谓 语动词用单数形式.
目前的人口增长很快。 The ppulatin tday is grwing very fast.2) ppulatin 之前若有分数或百分数修饰时, 用于指具体人数作主语时,谓语动词则用复 数形式. 这儿大约有五分之三的人口是农民。 Abut three fifths f the ppulatin here are farmers.
3) 表示某一范围内有多少人口时,用 has a ppulatin f + 数词. 中国有13亿人口。 China has a ppulatin f 1.3 billin.4) 问某地有多少人口时, 用 What is/was the ppulatin f + 地名? 中国有多少人口? What’s the ppulatin f China?
(5) 表示人口的多少时,用large或small 修饰,而 不能用many, mre或few等. 中国是世界上人口最多的国家。 China has the largest ppulatin f the wrld.
t much 太多(+名词/放在行为动词后 起限制作用)t many +可数名词,是”非常”的 意思much t =quite+形容词/副词,是非常/ 十分
2. Hang n a minute! I will write that dwn t! 等等,我要把这点也记下来! Hang n 表示:“让某人等一下”;例如: Sally’s n the ther phne — wuld yu like t hang n? 萨利再接另一个电话,请您稍等一下可以吗? Hang n! I’ll be back in a minute. 稍等! 我马上回来。
一、用英语写出下列数字:
ninety-eight thusand seven hundred and fifty-fur
Nine hundred and eighty-three
five hundred (and) sixty-six
seven hundred and nine
566__________________________________ 709__________________________________ 983__________________________________ 98 754_______________________________ ________________________________
Three thusand eight hundred and seventy-tw
Frty-six thusand tw hundred and ninety
Fifty-eight thusand tw hundred and thirty
59684,3219,648,215
five hundred and ninety-six
eighty-fur thusand three hundred and twenty-ne
Nine millin, six hundred and frty-eight thusand, tw hundred and fifteen
1. 北京人口是多少?
_______ ____the _________ ____Beijing?
2. 中国的人口大约为13亿。
The _________ ____China _____ _____ ___________.
What is ppulatin f
ppulatin f isabut 1.3 billin
4. 增长的人口给一些国家带来众多问题。
An __________ __________ causes______ ______in sme _____.
3. 人口太多,空间不够。
There are______ ______peple and there is nt _______ ______.
t much enugh space
increasing ppulatin
many prblems cuntries
( ) 1. The bike cst me ________ yuan. A five hundred and frty B five hundreds frty C five hundred frty
( ) 2. ____ peple in the wrld are sending and receiving e-mails every day. A. Millin f B. Many millins f C. Several millin f
( ) 3. _______ trees were planted n the muntain last year. A. Thusands f B. Thusand f C. Five thusand f
( ) 4. ---Can yu write the number eighty-five thusand, six hundred and twenty-six? ---Yes, it is __________. A. 856620 B. 85626 C. 58662
5 _______ is the ppulatin f yur cuntry? A. Hw many B. Hw much C. What 6 As time ges n, the wrld’s ppulatin is _________. A. mre and mre B. larger and larger C. smaller and smaller
Practice with yur classmates t speak and write large numbers. Write sme number cars and put them in yur rm. Whenever yu see, read them quickly.
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