英语人教版八年级下册Unit 7 SectionA.ppt

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1、Section A 1a2d和平初级中学林晓琼square n.平方平方meter n.米米skwe(r)mi:t(r)deep adj.深的深的desert n.沙漠沙漠population n.人口人口Asia n.亚洲亚洲di:pdeztppjulenetour v.n.旅行旅行tourist n.旅行者旅行者wall n.墙墙amazing adj.令人大为惊奇的令人大为惊奇的t(r)trstmezancient adj.古代的古代的wide adj.宽的；宽阔的宽的；宽阔的wadenntsquaremeterdeepdesertpopulationAsiatourtouristwal

2、lamazingancientwide平方米深的沙漠人口亚洲旅行旅行者墙令人大为惊奇的古代的宽的人口人口宽的宽的令人大为惊奇的令人大为惊奇的沙漠沙漠亚洲亚洲深的深的.根据语境，选择下列恰当的单词填空，根据语境，选择下列恰当的单词填空，有的需要变换形式，每个限用一次。有的需要变换形式，每个限用一次。deep,protect,tourist,wide,population1.These American _ are all interested in the Summer Palace.2.How _ is this lake?About 30m.But Im not sure.touristsd

3、eepdeep,protect,tourist,wide,population3.The _ of this city is 80,000,000.Wow,so many people!4.This river is 30m long and 12m _.5.Everyone should try their best to _ our environment.populationwideprotectDo you know these places?Qomolangma Qomolangma runs along the border between China and Nepal.It i

4、s covered with snow all the year round.Its 8844.43 high,the highest in the world.Its 26 kilometers long.tumul:m珠穆朗玛峰Qomolangmaisthehighestmountainintheworld.The Nile is the longest river in the world.Its more than 6600 kilometers long.It runs through 9 countries,its one of the largest river flows th

5、rough the international states in the world and runs into the Mediterranean Sea(地中海地中海)in the end.the Nilenail尼罗河TheNileisthelongestriverintheworld.the Caspian Sea The Caspian Sea is the biggest lake in the world.It lies in the border between Asia and Europe.kspin里海TheCaspianSeaisthebiggestlakeinthe

6、world.The Sahara is the biggest desert in the world.It is located in the northern Africa,climate conditions are very bad,is one of the earths most not suitable for biological survival.the Saharash:r撒哈拉沙漠The Sahara is the biggest desertin the world.The Yangtze River is the third longest river in the

7、world,the first Asian rivers.Its 6211.31 kilometers long.The Yangtze River Basin,east-west width of 3219 kilometers,about 966 kilometers wide north-south,passing through 11 provinces.It runs into the East Sea in Shanghai finally.the Yangtze Riverjzi长江Which is the highest mountain in the world?Which

8、is the longest river in Asia?.1a Match the facts you know.Qomolangma about 9,600,000 square kilometers in sizeThe Sahara1,025 meters deepThe Caspian Sea6,671 kilometers longThe Nile8,844.43 meters high多位基数词读法多位基数词读法457-890-608-389-three hundred and eighty-ninefour hundred and fifty-seveneight hundre

9、d and ninetysix hundred and eight1、101999的的三三位位数数由由“百百位位数数and+两两位位数数”组组成。成。102-one hundred and two635-six hundred and thirty-five2、三位数以上的数，从个位往前数，每三位数加三位数以上的数，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一个逗号，从后往前数的第一个逗号代表thousand,第二个逗号代表第二个逗号代表million,第三个逗号是第三个逗号是billion，注意，注意这几个词不能用复数形式，后也不这几个词不能用复数形式，后也不能加能加and

10、。Eg:2,648 two thousand,six hundred and forty-eight Eg:16,250,064 sixteen million,two hundred and fifty thousand,and sixty-four 345-1001-18,657,421-three hundred and forty-fiveone thousand and oneeighteen million,six hundred and fifty-seven thousand,four hundred and twenty-one读一读读一读8,844.43 meters hi

11、gh.8,844.43 米高米高数字数字+meters high(long,wide，deep)米高（长，宽米高（长，宽,深深)。e.g.The wall is 1.7 metres wide.1b Listen and complete the sentences.1.Qomolangma is _ than any other mountain in the world.2.The Sahara is _ desert in the world.3.The Caspian Sea is _ of all the salt lakes.4.The Nile is _ river in the

12、 world.higherthe biggestthe deepestthe longest形容词比较级形容词比较级+than+any other+名词单数名词单数 比其他的比其他的都都比较级和最高级的转换比较级和最高级的转换e.g.Tom is the tallest student in the class.=Tom is taller than any other student in the class.形容词比较级形容词比较级+than+any other+名词单数名词单数 比其他的比其他的都都英语中大多数形容词和副词都有三个等级：原级、比较级和最高级。1、形容词和副词的原级当相比较

13、的两者/部分在程度上相同时，可用原级比较。Eg:汤姆和我年龄一样大。Tomisasoldasme.Eg:萨姆学习不像他姐姐那样努力。Samdoesntstudyashardashissister.late later-latestearly earlier earliestbigbigger-biggestfluently/difficultmore,most重读闭音节、末尾只有一个重读闭音节、末尾只有一个重读闭音节、末尾只有一个重读闭音节、末尾只有一个辅音字母双写加辅音字母双写加辅音字母双写加辅音字母双写加 er er 或或或或 estest单音节词在词尾比较级单音节词在词尾比较级加加-er

14、或最高级加或最高级加-est以以e结尾的词，只需加结尾的词，只需加r 或或st以辅音字母加以辅音字母加以辅音字母加以辅音字母加 y y 结尾双音节结尾双音节结尾双音节结尾双音节词变词变词变词变 y y 为为为为 i i 加加加加 er er 或或或或 estest部分双音节和多音节词在原部分双音节和多音节词在原部分双音节和多音节词在原部分双音节和多音节词在原级前加级前加级前加级前加 more more 或或或或 mostmost少数以少数以er,ow 结尾的双音结尾的双音节词加节词加-er-esttalltaller-tallest clevercleverer-cleverest形容词和副词

15、比较级和最高级构成形容词和副词比较级和最高级构成形容词和副词比较级和最高级构成形容词和副词比较级和最高级构成 (规则变化规则变化规则变化规则变化)不规则变化不规则变化 good/well better-best much/many more-most bad/badly/ill worse worst little less least far farther/further farthest furthest old older/elder oldest/eldest1.much/far/a lot,even,still,a little/a bit 修修饰饰比比较级较级,表示程度表示程度.

16、He runs much faster than she.形容词和副词比较级的用法形容词和副词比较级的用法 2.“more and more+比比较级较级“比比较级较级+and+比比较级较级”表示表示“越来越越来越”3.“the+比比较级较级,the+比比较级较级”表示表示“越越,越越”Gao Shilin becomes taller and taller.The more you exercise,the healthier you will be.Lin Jierong is becoming more and more beautiful.1.比较级比较级+and+比较级比较级 越来越

17、越来越2.the+比较级比较级,the+比较级比较级 越越,越越 3._you are,_mistakes you will make.(你越仔细，做错的题目就越少）4._you eat,_youll be.(你吃得越多,就越胖)5.Alice writes well.Mary writes _ than she.(甚至更好）The more carefulthe fewerThe morethe fatter1.The girl becomes _.(越来越漂亮）more and more beautiful2.The weather is getting _.(越来越槽糕）worse an

18、d worseeven/still better1.最高最高级级+of/among(同同类类比比较较)in(范范围围比比较较)3.one of+形容形容词词最高最高级级+名名词词复数表示复数表示“最最 之一之一”2.序数序数词词修修饰饰最高最高级级形容词和副词的最高级的用法形容词和副词的最高级的用法Liu Jinji is the tallest of the three.Lin Xiaohan is the second tallest girl in our class.Zhang Kaiyang is one of the tallest students in our class.Ze

19、ng Jiansheng runs(the)fastest in our class.1.Hainan is a very large Island.It is the second _ island in china.(large)2.Our teacher is as _ as before.(Our teacher is as _ as before.(busy).).3.He is _ among us.(3.He is _ among us.(careful)4.Li Lei jumped far _ than Jim.(far)4.Li Lei jumped far _ than

20、Jim.(far)5.The busier he is,the _ he feels.(5.The busier he is,the _ he feels.(happy)6.I think Yao Ming is one of _ basketball players in NBA.(hot)busythe most carefulfartherhappierlargestthe hottest完成句子完成句子2a Listen and number the facts(1-4)in the order you hear them._ The Yangtze River is about _

21、kilometers long and the Yellow River is _ kilometers long._ China has the biggest population in the world.Its a lot bigger than the population of the US._ China is over _ years old.It has a much longer history than the US.The US is not even _ years old._ China is almost as big as the US,and it is th

22、e biggest country in Asia.42132b Listen again and fill in the blanks with the numbers in the box.6,300 5,000 5,464 300_ The Yangtze River is about _ kilometers long and the Yellow River is _ kilometers long._ China has the biggest population in the world.Its a lot bigger than the population of the U

23、S._ China is over _ years old.It has a much longer history than the US.The US is not even _ years old._ China is almost as big as the US,and it is the biggest country in Asia.42136,3005,4645,000300Thepopulationof+某地+is+数词”或“某地+hasapopulationof+数词”，表示“某地有多少人口”。当表示人口“多”或“少”时，常用形容词large，big或small修饰popu

24、lation。如：Thetownhasalarge/big/smallpopulation.当对人口数量进行提问时，要用疑问词what或howlarge，不用howmuch/howmany。如：What/Howlargeisthepopulationofyourcountry?.根据句意，用括号内所给单词的适当形根据句意，用括号内所给单词的适当形 式填空。式填空。1.The snow here was _(thick)than that over there.2.I think mountain climbing is _(dangerous)than running.3.Of all the boys,Dave is the _ (outgoing).4.Which mountain rises _(high),Mount Tai,Mount Huang or Mount Tianzi?5.This road is almost as _(long)as that one.thickermore dangerousmost outgoinghighestlongExerciseMemorize the important phrases and sentences.