初中英语人教版八年级下册unit 7 Section A 1a-2d.doc

八下Unit7 Whats the highest mountain in the world? Period 1 Section A( 1a-1c)学案学习目标1. 知识目标(1) 词汇 square n. 平方 meter n. 米 deep adj. 深的 desert n. 沙漠(2) 目标语言-Whats the highest mountain in the world? -Qomolangma.Qomolangma is 8,844.43 meters high. Its higher than any other mountains in the world.Its higher than any other mountain in the world.The Caspian Sea is the deepest of all the salt lakes.(3) 知识结构 三位以上数字的认读 形容词和副词的比较级和最高级2. 能力目标 学会正确使用形容词和副词的比较级和最高级。3. 情感态度价值观 (1) 让学生领略自然，了解世界之最，激发学生热爱自然之情。 (2) 增强学生珍惜、爱护、保护自然的意识。重点1. 学习和掌握三位以上数字的读法。2. 用最高级谈论“世界之最”难点 1. 三位以上数字的认读 2. 理解并灵活运用最高级 学习过程自学并填空1、 三位以上数字的读法 【解读】 34位数的读法：202 读作：two hundred and two234 读作：two hundred and thirty-four1,234 读作：one thousand two hundred and thirty-four试着找找规律：先说_，后加_，再加_或_。【应用】请试读：576 _4389_59位数的读法： 11,234 eleven thousand two hundred and thirty-four 155,721 one hundred and fifty-five thousand, seven hundred and twenty-one 6,155,702 six million, one hundred and fifty-five thousand, seven hundred and two 26,000,008 twenty-six million and eight 从以上例子可以看出：汉语和英语数字表达的方式不同。英语是在数字超过千亿后，以“千”(thousand)的倍数来表达的。如“一万”是“十千”，即_；“十万”是“百千”，即_，直至“百万”million。百万以上的数字则用“百万”的倍数表达。所以英文表达数字时可以从右往左，三位一逗号，逗号从右往左分别对应的是：thousand, million etc.【应用】请试读：571,496_ 25,803,746_2、1，025 meters deep 【解读】 “某物深度”的表达方式为：基数词+表示“度量”的名词+deep The hole is 10 meters deep. 这个洞十米深。拓展：在英语，表示“事物的长、宽、高”等时，其表达方式为：基数词+表示“度量”的名词（meter, foot等）+形容词（long, wide, tall, high, deep）, 对其提问分别用，how long, how wide, how tall, how high和how deep.【举例】The river is about 10 meters wide. 这条河大约十米宽。【应用】翻译句子 我哥哥身高1.80米。_对划线部分提问。 (1)The river is 2000 meters long._ _ is the river?(2)The snake hole is two meters deep._ _ is the snake hole?2. What is the highest mountain in the world?【解读】句中的the highest 是一个重要语法最高级，意为“最高的”。 最高级的含义：表示三者或三者以上的人或事物的比较。用法：三者或三者以上的人或事物的比较时，用最高级，形容词的最高级前面要用the,后面用表示范围的of/in。【举例】Tom is the tallest boy in his class.汤姆是他班上最高的男生。She sings the best of the five girls这五个女孩当中，她唱得最好。【应用】完成句子 黄河是中国的第二大长河。 The Yellow River is the second _ (long) river in China. Finish 1a. Match the facts you know. Look at the pictures and say. This is a picture of _. Its very_. It is the_ _ in the world. Finish 1b. Listen and complete the sentences. Practice. Use the information in 1b to make conversations. A: Whats the highest mountain in the world? B: Qomolangma. A: How high is it? B: Its 8,844.43 meters high.Exercises 单项选择。 （ ） 1. Qomolangma is _ mountain in the world. A. high B. highest C. the highest ( ) 2.Debbie is growing fast. She is even _ than her mother. A. tall B. taller C. tallest ( ) 3.-Who plays the violin _, Sally or Cathy ? -Sally. But she gave the chance to Cathy. A. well B. better C. the best ( ) 4.-Do you know_ the Caspian Sea is? -About 1,025 meters deep. A. how wide B. how high C. how deep ( ) 5.Shanghai is _than any other city in China. A. bigger B. biggest C. big 用所给词的正确形式填空使句子完整。1. Qomolangma is the_(tall) mountain in the world.2. Which girl is _(lovely), Susan or Lucy?-Susan is. 3. I am _(good)at English than math. 4. Do yo