人教版八下-Unit 7 what's the highest mountain in the world -Section A 1a—2d-ppt课件-(含教案+视频+音频)-市级优课-(编号：7027b).zip

Unit 7 Whats the highest mountain in the world? Lets play a game. Rules: Stand up. Count the numbers from one to one hundred. The student who pauses have to sit own. The students who stand to the end are the winners. 7 seven 77 seventy-seven 777 seven hundred and seventy-seven 777,777 seven hundred and seventy-seven thousand, seven hundred and seventy-seven 777,777,777 seven hundred and seventy-seven million, seven hundred and seventy-seven thousand, seven hundred and seventy-seven 777,777,777,777 seven hundred and seventy-seven billion, seven hundred and seventy-seven million, seven hundred and seventy-seven thousand, seven hundred and seventy-seven Sum up: 1.0-12特殊； 2.13-19后加teen， 3.整十后加ty, 4.十位与个位间加连字符“-”， 5.百位与十位间加and。 6.从数字的右端向左端数起，每三位数 加一个逗号，自右向左第一个逗号前 加 thousand，第二个逗号前 加million ，第三个逗号前 加billion，逗号间按 百位数来读。 It is 8,844.43 meters high. 6,671 kilometers long 1,025 meters deep The Caspian Sea（里海） 9,600,000 square kilometers in size The Sahara（撒哈拉沙漠） Qomolangma 1a Match the facts you know. about 9,600,000 kilometers long the Caspian Sea the Nile the Sahara 8,844.43 meters high 6,671 kilometers long 8,844.43 meters high Qomolangma is 8,844.43 meters high. The Nile is 6,671 kilometers long. The Sahara is about 9,600,000 square kilometers in size. The Caspian Sea is 1,025 kilometers deep. Let make sentences. Sum up: How to describe a nature? Sentence structure: Subject + be _number +noun + adjective. 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. 1b Listen and complete the sentences. higher the biggest the deepest the longest 词词的特征变变 化 例 词词 原 级级比较级较级最高级级 一般单单音节词节词直接加-er, -est great loud greater louder greatest loudest 以e结结尾的词词加-r, -st large wise larger wiser largest wisest 以单单个辅辅音字 母（非r）结结尾 的单单音节词节词 双写末尾的辅辅音 字母，再加-er, -est hot big hotter bigger hottest biggest 以辅辅音字母+y 结结尾的双音节节 词词 变变y为为i，再加-er,-est angry likely angrier likelier angriest likeliest 少数以-er, -ow 结结尾的双音节节 词词 直接加-er; -est bitter yellow bitterer yellower bitterest yellowest 多数双音节词节词 多音节词节词 和 源于分词词的形 容词词 在原级级前加more, most active cheerful charming more active more cheerful more charming most active most cheerful most charming What have you learnt from the video? 1,025 meters 8,844.43meters 9,600,000 square kilometers 6,671 kilometers Pair work：Talk about geography and nature. 一、写出下列单词的比较级和最高 级。 1. good 2. comfortable 3. big 4. happy 5. cheap 6. many 7. difficult 8. little 1. good 2. comfortable 3. big 4. happy 5. cheap 6. many 7. difficult 8. little better best more most bigger biggest happier happiest cheaper cheapest more most more most less least 1. Lily gets up _ (early) than Lucy. 2. Which one runs _ (slow), Tom or Jim? 3.This book is _ (interesting) than that one. earlier more slowly more interesting 二、根据所给词的适当形式填空。 4. She works _ (careful) in her school. 5. Who goes to bed _ (late) Jim, Tom or Jack? 6. I think turkey is _ (delicious) food of all. the most carefully latest the most delicious Homework Find out more natures and facts and share the information with your friends. Teaching aims: 1.Learn the words and phrases: the earth, in Asia, the Yangtze River, the Yellow River, the Nile, in Africa, the Caspian Sea, Qomolangma, desert, the Sahara, square kilometers 2.The students will be able to use the expressions: Whats the highest mountain/the longest river/ the deepest salt lake/ the biggest desert in the world? 3. To express the big numbers using: thousand, million,billion, kilometer. 4. Be able talk about the paleography and nature using long/deep/high. 5. The students can use the questions to get information to improve their listening and speaking abilities. 6. To train the students cooperation with their partners. 7. To train the students to care about the worlds environment through talking about the worlds tops. Teaching important points: The comparative and superlative of adj. Note its grammar meaning and use “what” questions to ask about the worlds tops Teaching difficult points: The students can ask questions to get information to improve their listening and speaking abilities. Teaching aids: CAI, a recorder, Teaching procedures: Step 1. Lead in. Ask students to sing along a song named numbers. (复习基础数字，为复杂数字学习做准备。) Step 2. Presentation Show some numbers, ask students to read and write. 7 seven 77 seventy-seven 777 seven hundred and seventy-seven 7,777 seven thousand, seven hundred and seventy-seven 77,777 seventy-seven thousand, seven hundred and seventy-seven 777,777 seven hundred and seventy-seven thousand, seven hundred and seventy- seven 777,777,777 seven hundred and seventy-seven million, seven hundred and seventy-seven thousand, seven hundred and seventy-seven 777,777,777,777 seven hundred and seventy-seven billion, seven hundred and seventy-seven million, seven hundred and seventy-seven thousand, seven hundred and seventy-seven Step 3. Sum up: 0-12 特殊； 13-19 后加 teen， 整十后加 ty, 十位与个位间加连字符-， 百位与十位间可加加 and。 从数字的右端向左端数起，每三位数加一个逗号，右数第一个逗号前加 thousand，第二个逗号前 million，第三个逗号前 billion，逗号间按百位数来读。 （通过个例的展现，总结出一般规则。） Step 4. Presentation： Show some pictures and talk about them. 1. Qomolangma. 2. the Nile. 3.the Caspian Sea. 4. the Sahara. Step 5. Match the facts you know. Qomolangma. about 9,600,000 square kilometers in size the Nile. 1,025 meters deep the Caspian Sea. 6,671 kilometers long the Sahara. 8,844.43 meters high Step5. 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 world. Check the answers with the ss. Play the video again. Now, lets check the answer. Step 6. Pair work 1. Get the students to have a pairwork, talking about the places in the picture. 2. Show some other pictures on the screen and go on the talking. 3. Read through the dialogue in Activity 1c and talk about what the worlds tops are, 4. Practice the conversations with the partners like this. A: Whats the longest river in the world? B: The Nile. (To learn the worlds tops and the big numbers.) The longest wall, the biggest province. The biggest river, The biggest square The largest island the longest river, biggest grassland, The biggest city, the biggest mountain city, The deepest lake. Step 7. Homework Assign todays homework Find out more tops in the world or in China and show them to classmates. Recite the 5 sentences in 1b. Bb design Unit 7 Whats the highest mountain in the world? Period 1 (Section A 1a -1c) A: Whats the highest mountain in the world? B: Qomolangma. .kilometers long/deep/big one of the oldest countries in the world the second longest river in the world Thinking after class：