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1、学练优八年级英语下学练优八年级英语下（RJRJ）教学课件教学课件Section A(1a-2d)Unit 7 Whats the highest mountain in the world?Read and learnWords and expressionsWhich is the highest mountain in the world?Which is the longest river in the world?Which is the longest river in Asia?Lead inDo you know?1a Match the facts you know.1bLis
2、ten 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 world.higherthe biggestthe deepestthe longestUse the information in 1b to make conversations1cA:What i
3、s the highest mountain in the world?B:Qomolangma.What is the longest river in the world?The Nile.What is the deepest desert in the world?The Sahara.2aListen and number the facts 1-4 in the order you hear them._ The Yangtze River is about _ kilometers long and the Yellow River is _ kilometers long._
4、China has the biggest population in the world.Its a lot bigger than the population of the US.6,300 5,000 5,464 30042_ 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,but it is the biggest country in Asia.13Listen ag
5、ain and fill in the blanks in 2a with numbers in the box.2b_ 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 US.6,3005,464_ China is over _ years old.It has a much longe
6、r history than the US.The US is not even _ years old._ China is almost as big as the US,but it is the biggest country in Asia.5,000300Make conversations using the information in 2a.2cA:Did you know that China is one of the oldest countries in the world?B:Yes,I did.Its much older than my country.Plea
7、se read the conversation in 2d.Whats the conversation about?Its about a tour to the Ming Great Wall.Read again and answer the questions in 2d.1.How long is the Ming Great Wall?2.What does the guide say about the wall?Its about 8,850 kilometers long.Its quite tall and wide./Its the longest wall in th
8、e world.Language points 表示人口表示人口“多多”要用要用large或或big；表示人表示人口口“少少”要用要用small。China has the largest population in the world.Population：意为：意为“人口数量人口数量”，“人口人口”，是一个，是一个集合名词集合名词.population常与常与定冠词定冠词the连用连用,作主语用时作主语用时,谓语动词谓语动词常用常用第三人称单数第三人称单数形形式。式。The worlds population _increasing_.全世界的人口增长得越来越快。全世界的人口增长得越来越快
9、。The population of China is about 1,300,000,000.中国人口大约有中国人口大约有13亿。亿。faster and fasteris当主语是表示当主语是表示“人口的百分之几、几分人口的百分之几、几分之几之几”时时,谓语动词谓语动词用复数形式用复数形式.eg:中国大约有百分之七十的人口是农民。中国大约有百分之七十的人口是农民。About seventy percent of the population in China are farmers 询问某国、某地有多少人口时询问某国、某地有多少人口时,“How large.?”;在问具体人口时用在问具体人口
10、时用“What.?”。你们家乡有多少人口你们家乡有多少人口?加拿大的人口有多少的人口有多少?How large is the population of your hometown?What is the population of Canada?Practice这个城市的人口是这个城市的人口是600万。万。The population of this city is six million中国的人口比美国的人口多很多。中国的人口比美国的人口多很多。The population of China is much larger than that of the USA.2.Did you kno
11、w that China is one of the oldest countries in the world?that China is是是know的宾语从句。的宾语从句。尽管尽管主句的动词是过去时态，但由于宾语从句主句的动词是过去时态，但由于宾语从句陈述的是客观事实，所以从句仍用一般现陈述的是客观事实，所以从句仍用一般现在时。在时。3.Its much older than my country.much higher 意为意为“高得多高得多”。在形。在形容比较级前还可以用容比较级前还可以用much,even,a little,still,a lot,less等修饰词表示程度。等修饰词表
12、示程度。Practice他比我跑得更快。他比我跑得更快。He runs even faster than I.日本土地面积只比德国大一点儿。日本土地面积只比德国大一点儿。Japan is a little larger than Germany in area.1.The p_ in our hometown is very large.2.We t_ by car every summer.3.We have to make plans to p _ the endangered animals.4.They came to a _(宽阔的宽阔的)river.5.Some _(古老的古老的)towns have walls around them.opulationourrotectwideQuiz:根据提示完成句子。根据提示完成句子。ancient1.To memorize the important phrases and sentences.2.To make some dialogues about asking the size of objects.HomeworkThank you!