第1课时（A 1a-2d）课件教学

1、Unit 7 Whats the highest mountain in the world?寿县船涨学校Section A 1a-2dCan you read the following numbers?1,0259,600,0008,848.866,671What do you know about this number?Qomolangma. Its 8,848.86 meters high. What about this number?_. Its _.Qomolangma 8,848.86 meters highIts the highest mountain in the wo

2、rld. Its covered with snow all year round.the Caspian Sea 1,025 meters deepIts the biggest salt lake in the world. It lies at the junction of Asia and Europe.the Sahara about 9,600,000 square kilometers in sizeIts the biggest desert in the world.the Nile 6,671 kilometers longIts the longest river in

3、 the world. It runs through 9 countries.Match the facts you know.1aQomolangmathe Nilethe Caspian Sea the SaharaQomolangmaThe NileThe Caspian SeaThe Saharaabout 9,600,000 square kilometers in size1,025 meters deep6,671 kilometers long8,848.86 meters highsquare在此处作形容词，意为“平方”，用于数字后表示面积。square还可作名词，意为“正

4、方形；广场”。in size 在尺寸上；在大小方面与in size结构类似的还有：in height 在高度上in weight 在重量上1bListen 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 bigg

5、estthe deepestthe longestCan you predict what we will fill in the following blanks?比较级+than any other+可数名词单数 “比其他任何一个都”，指 同一范围内的比较，表达最高级的意义。比较级+ than any +可数名词单数 “比任何一个都”，指不 在同一范围内进行比较。Teacher: Yesterday, we learned some important geographical facts. I hope you all still remember them. Im going to t

6、est you now by asking a few questions. First, whats the highest mountain in the world? Boy 1: Qomolangma! Its higher than any other mountain in the world. Teacher: Thats right. And who can tell me what the Sahara is? Girl 1: The Sahara is the biggest desert in the world.TapescriptsTeacher: Very good

7、. And which is the deepest salt lake in the world? Girl 2: The Caspian Sea is the deepest of all the salt lakes.Teacher: Youre all so smart! Now, for the last question, which is the longest river in the world?Boy 2: I know! The Nile is the longest river in the world. Boy 1: And the Amazon is the sec

8、ond longest river in the world. Teacher: It seems that you know the answers to all my questions. Good job!“the+序数词+最高级+单数名词+in”表示“是中的第几”What do you know about these places? Qomolangma is higher than any other mountain in the world. Its 8,848.86 meters high.The Nile is the longest river in the world.

9、 Its 6,671 kilometers long.The Caspian Sea is the deepest of all the salt lakes. Its 1,025 meters deep.The Sahara is the biggest desert in the world. Its about 9,600,000 square kilometers in size.1cUse the information in 1b to make conversations.What is the highest mountain in the world? Qomolangma.

10、What is the _ _ in the world? The Sahara.biggestdesertWhat is the deepest salt lake in the world? _.The Caspian Sea_The Nile.What is the longest river in the world? 世界上最大的岛群 the worlds largest island group 马来群岛 Malay archipelago最高的高原the highest plateau in the world 青藏高原 the Tibetan Plateau最大的洋 the w

11、orlds largest ocean 太平洋 the Pacific ocean最大的板块the worlds largest plates 亚欧板块 the Eurasian plate最淡的海 the worlds light 波罗地海 Baltic Sea最大的淡水湖worlds largest freshwater lake 苏必利尔湖 Lake superior世界最高峰 the highest peak in the world 珠穆朗玛峰Mount Qomolangma世界最冷的地方the coldest place on earth 南极 Antarctica地球表面最低点t

12、he earths surface lows 死海the Dead Sea最长的山脉the worlds longest mountain ranges 安第斯山脉the Andes最大的盆地the worlds largest basin 刚果盆地Congo Basin 海洋最深深度the sea depth 马里亚纳海沟 Mariana TrenchDo you know how to read big numbers? Lets watch a video. Read the numbers below.5,0006,3005,465300Make as many sentences a

13、s you can to compare the four numbers. six thousand and three hundredfive thousand, four hundred and sixty-fivefive thousandthree hundredFor example:6,300 is the biggest/largest number.6,300 is much bigger than 5,000.2aListen and number the facts 1- 4 in the order you hear them.6,300 5,000 5,464 300

14、_ 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._ China is over _ years old. It has a much longer history than the US. The US is not even _ years old._ China is a

15、lmost as big as the US, and it is the biggest country in Asia.136,300 5,000 5,464 30022bListen again and fill in the blanks in 2a with the numbers in the box. _ The Yangtze River is about _ kilometers long and the Yellow River is _ kilometers long._ China has the biggest population in the world. Its

16、 a lot bigger than the population of the US.6,300 5,000 5,464 3006,3005,4641. 集体名词，作主语时，谓语动词用第三人称单数形式。2. 表示人口“多”或“少”时，常用large，big或small。3. 分数或百分数修饰population作主语时，谓语动词用单 复数均可。4. 询问人口数量时，用“Whats the population of ?” 或“How large is the population of ?”。_ China is over _ years old. It has a much longer

17、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.6,300 5,000 5,464 3005,000300much在此作副词，“非常；很”，表示程度，修饰比较级。可用于修饰比较级的词还有a lot, a little, a bit, even, far等。Mike: Hi, Im Mike. Im from the United States. Boy: Welcome to our clas

18、s, Mike. Were happy to meet you.Mike: Can you tell me a bit more about China? Girl: Sure! Did you know that China is one of the oldest countries in the world? Its over 5,000 years old.TapescriptsMike: Yes, I did. Its much older than my country in fact, the United States is one of the youngest countr

19、ies in the world. Its not even 300 years old.主句that引导的宾语从句one of the+形容词最高级+可数名词复数“最的之一”，作主语时，谓语动词用单数形式。Mike: Wow! I didnt know that. I thought the Yellow River was longer. Boy: No, the Yellow River is 5,464 kilometers long. But both rivers are very important to China.Mike: But China is about the sa

20、me size as the US, right? Girl: Yes, and its the biggest country in Asia. We also have some famous rivers. The Yangtze River is the longest river in Asia. Its about 6,300 kilometers long.Boy: And China has the biggest population, too. Its a lot bigger than the population of the United States.2cMake

21、conversations using the information in 2a. A: Did you know that China is one of the oldest countries in the world?B: Yes, I did. Its much older than my country. Chat with your friendDid you know that China is the biggest country in Asia?Yes, I did. Its almost as big as the US.Did you know that Yangt

22、ze River is the longest river in China?Yes, I did. Its about 6,300 kilometers long.Read the conversation in 2d fast and find out the main idea of it.Fast readingIts about a tour to the Ming Great Wall.Read the conversation and judge.1. The Ming Great Wall is about 8,850 kilometers long. 2. The only

23、reason why the ancient emperors built the wall was to protect their part of the country.3. Badaling is the most famous part of the Ming Great Wall.Careful readingthe lengththe main reason to buildthe most famous partabout 8,850 kilometers longprotect their part of the countryBadalingRead the convers

24、ation and fill in the table.The Ming Great WallIf were only talking about the parts from the Ming Dynasty, its about 8,850 kilometers _. This makes it the _ wall in the world. The main reason why the ancient emperors built the wall was to protect their part of the country. As you can see, its quite

25、_ and _. As far as I know, there are no other _ objects as big as this.longest longRead the conversation and fill in the blanks.tallwideman-madeFeel free to ask me anything on todays Great Wall tour.2dRole-play the conversation. How long is the wall?Ah, the most popular question! If were only talkin

26、g about the parts from the Ming Dynasty, its about 8,850 kilometers long. This makes it the longest wall in the world.feel free to do sth.(可以)随便(做某事)tour作名词：a tour of/around 的旅行辨析：tour, trip, journey与traveltour常指以观光、视察、购物等为目的的旅行，也可指明星的巡演。trip常指短距离的旅行、远足。journey常指远距离的陆地旅行。travel常指远距离旅行或国外旅行。tour作动词：“旅行；旅游”tourist是可数名词，“旅行者；观光者”The main reason was to protect their part of the country. As you can see, its quite tall and wide. As far as I know, there are no other man-made objects as big as this.Wow, thats amazing! Why did the ancient emperors build the wall?Yes, its the most fam