英语人教版八年级下册unit7 sectionA (1a-2d）.ppt

Unit 7 Section APeriod 1(1a-2d)Whats the highest mountain in the world?Teaching aims能正确使用下列词汇：square meter desert population Asia deep tour tourist wall amazing ancient protect 能熟练运用形容词和副词的比较级、最高级描述事物。能用英语表达较大的数字。了解四个世界之最，增强对大自然的探究兴趣。课前测评1.My watch is _(expensive)than hers.2.I have _(few)story books than yours.3.He is much _(tall)than his father.4.She is one of _(good)teachers in our school.5.China is as _(big)as the US.more expensivefewertallerthe bestbigCan you read the below numbers?98ninety-eight125one hundred and twenty-five10256,6718,844.439,600,000one thousand and twenty-fivesix thousand six hundred and seventy-oneeight thousand eight hundredand forty-four point four threenine million six hundred thousand What do you know about these numbers?10256,6718,844.439,600,000尼罗河尼罗河里海里海撒哈拉沙漠撒哈拉沙漠QomolangmaThe NileThe Caspian SeaThe Sahara珠穆朗玛峰珠穆朗玛峰mountaindesertSalt lakeriver1aMatch the facts you know.Qomolangmaabout 9,600,000 square kilometers in sizeThe Sahara1,025 meters deepThe Caspian Sea6,671 kilometers longThe Nile8,844.43 meters high1bListen 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 longestWhat is the longest river in the world?The Nile.Can you give us more details about it?The Nile is the longest river,and it is 6671 kilometers long.What is the biggest desert in the world?The Sahara.Can you give us more details about it?The Sahara is the biggest desert,and it is 9,600,000 square kilometers in size.What is the highest mountain in the world?The Qomolangma.Can you give us more details about it?The Qomolangma is the highest mountain,and it is 8844.43 meters high.What is the deepest salt lake in the world?The Caspian SeaCan you give us more details about it?The Caspian Sea is the deepest salt lake,and it is 1025 meters deep.6,3005,0005,464300Can you translate the below sentences?1.6,300是最大的数字。是最大的数字。6,300 is the biggest(largest)number.2.300是最小的数字。是最小的数字。300 is the smallest number.3.6,300比比5,000要大很多。要大很多。6,300 is much bigger than 5,000.4.5,464和和5,000差不多一样大。差不多一样大。5,464 is almost as big as 5,000.Listen again 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.42_ 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.132aListen 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._ China has the biggest population in the world.Its a lot bigger than the population of the US.6,300 5,000 5,464 3006,3005,46442_ 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.5,00030013Make 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.为什么前后时态为什么前后时态不一样呢？不一样呢？修饰比较级还有修饰比较级还有哪些词呢？哪些词呢？much,a lot,a little,a bit,even,far2dAnswer the below questions1.Whats the conversation about?2.How long is the Ming Great Wall?3.Why was the Wall built?4.Is Badaling Part of the Ming Great Wall?Its about the Great WallIts about 8,850 kilometers longTo protect their part of the country Yes,it is.达标测评达标测评1.The Sahara is the biggest _ in the world.（句意填词）2.Qomolangma is _(high)mountain in the world.3.The Caspian Sea is _(deep)of all the salt lakes.4.The Nile is _(long)river in the world.5.The height of Qomolangma is 8,844.43 meters.(改为同义句）Qomolangma is _ _ _.desertthe highestthe deepestthe longest8,844.43metershigh