【倍速课时学练】2015开学备课（人教版）八年级英语下册教学课件：Unit7 Section A.pptVIP

Qomolangma is ________ than any other mountain in the world. The Sahara is ___________ desert in the world. The Caspian Sea is _________ of all the salt lakes. The Nile is __________ river in the world. A: What is the highest mountain in the world? B: Qomolangma. __The Yangtze River is about _____ kilometers long and the Yellow River is ________ kilometers long. __ China has the biggest population in the world. It’s 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 the biggest country in Asia. A: Did you know that China is one of the oldest countries in the world? B: Yes, I did. It’s much older than my country. A: Did you know that China has the biggest population in the world? B: Yes, I did. It’s a lot bigger than the population of the US. A: Did you know that China is the biggest country in Asia? B: Yes, I did. It’s almost as big as the US. A: Did you know that Yangtze River is much longer than the Yellow River? B: No, I didn’t. How long is it? A: It’s 6,300 kilometers long. B: Wow! That’s very long! 2. Qomolangma is 8,844.43 meters high. 3. Did you know that China is one of the oldest countries in the world? that China is…是know的宾语从句。尽管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在时。 4. It’s much older than my country. 5. As far as I know, there are no man-made objects as big as this. 知识拓展 2. thick adj. 1) 厚的;粗的 How thick is the board? 这块木板有多厚? 2) 浓的,浓厚的; 粘稠的;混浊的 It is dangerous to drive in a thick fog. 在浓雾天驾车很危险。 3. Thick clouds cover the top and snow can fall very hard. Even more serious difficulties include freezing weather conditions and heavy storms. 山顶上浓云覆盖，而且雪可能下的很大。更严重的困难是冰冻天气和强烈的暴风雪。 3. Why do so many climbers risk their lives? 1) lives是life的复数形式，意为“生命”。 Many people lost their lives in the accident. 在那次事故中很多人丧了命。 2) risk one’s life 冒着生命危险 他正在冒着生命危险打网球。 He risked his life playing tennis. 4. It is also very ha