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1、Unit 6 The Earths Atmosphere一、教学内容：一、教学内容：Unit 6 The Earths Atmosphere二、教学目标：二、教学目标：知识目标：熟练掌握本单元的单词、短语、句型和语法。能力目标：运用本单元所学的知识，描述制造、组成等方面。三、教学重难点：三、教学重难点：动词的被动语态课文分析及理解四、语法项目：四、语法项目：动词的被动语态五、本单元的重点知识：五、本单元的重点知识：1. 单词：熟练掌握本单元后单词的音、形、意2. 词组：1) be made from 由制造2) be made of 由制造3) tiny drops of water 小水滴4
2、) reduce waste 减少浪费5) 20 miles thick 20 英里厚6) protectfrom 保护免遭7) be made up of 由组成8) threefourths of the gases 43的气体9) depend on 依靠10) stay alive 生存11) be used to 习惯于12) draw worldwide attention 吸引世界注意13) blowaway 吹走14) be full of 充满15) be used for 用于做某事句子：1) Clouds are made of tiny drops water. 云是由
3、小水滴构成的。2) The atmosphere surrounds the earth like a blanket.大气层像毯子一样包裹着地球。3) The atmosphere protects the earth from the suns heat.大气层保护地球免遭太阳的炙烤。4) The air in the atmosphere is made up of dust and gases.大气层中的空气是由尘土和各种气体组成。5) More than three-fourths of gas is nitrogen.多于四分之三的气体是氮气。6) Plants depend on
4、 nitrogen to stay alive.植物依靠氮气来生存。7) More than three-fourths of the gas is nitrogen.气体中四分之三的气体都是氮气。8) People who travel to the mountains find it harder to breathe.到山上旅行的人发现这里呼吸比较困难。9) Big cities are full of cars. 大城市里都是汽车。10) They are used for business and pleasure. 他们是用来商务和娱乐的。11) Something should
5、be done about the use of cars in order to have cleaner air.为了得到更清洁的空气，应该就汽车的使用问题采取措施。六、本单元重点知识讲解六、本单元重点知识讲解1. The ship is made from waste materials.The T-shirt is made of cotton.be made from be made of 制成由LL 例如： The book is made of paper and paper is made from wood. The glass is made of glass and gl
6、ass is made from SiO2.2. The air that surrounds the earth is called the atmosphere.包围地球的空气被称为大气。be called 被称为同义词：be named例如：The boy is called “Da Niu” by his classmates.The machine is called “Washing machine”.That city will be called “Water City”.3. It surrounds the earth like a blanket20 miles thic
7、k.20 miles thick 20 英里厚数字+单位+形容词例如：1.7 metres tall 一米七高6 metres wide 六米宽20 kilometres away 20 公里远 Our classroom is three metres tall, 7 metres long and 6 metres wide. The Yellow River is 5000 kilometres longIt is the second longest river in China. The river is about 20 metres deep. You mustnt swim i
8、n it. Its too dangerous!【典型例题典型例题】 The ruler is （20 厘米长）. The book is （5 厘米厚）. The hole is about （50 米深）. The tree is nearly （36 米高）.4. The atmosphere protects the earth from the suns heat.protectfrom 保护免遭例如： The thick coat protects the body from the cold. The helmet protects the head from the rock.
9、 The plastic cover protects the book from being broken.5. Nothing could remain alive on the earth without the atmosphere to protect up.Plants depend on nitrogen to stay alive. remain alive 存活 stay alive 存活例如：remain silentstay calmremain standingstay awakeremain the goalstay coolremain weakstay quiet
10、 depend on 依靠，依赖 例如：The people in the south depend on the government.The pandas depend on our good care.You cant depend on your parents forever.【典型例题典型例题】 The success of the Olympic Game （依赖）Chinese peoples hard work. The poor children （依靠）those rich peoples support.6. The air in the atmosphere is m
11、ade up of dust and gases.be made up of 由构成，由组成例如：The class is made up of 20 boys and 19 girls.The teacher team is made up of 126 teachers.7. More than threefourths of the gas is nitrogen.threefourths 四分之三分数的概念：分数由基数词作分子，序数词作分母构成，分母序数词都用复数例如：31one-third76six-sevenths21one-second (one half)542 two and
12、 four-fifths8. People who travel to the mountains find it harder to breathe.sb. find it + adj. + to do sth. 某人发现做某事怎么样例如：I find it very interesting to travel to the forest.The boys find it very cool to smoke.【典型例题典型例题 我们发现早睡觉有好处。We . 他发现游过这条河很难。He found .9. Air pollution has drawn worldwide attentio
13、n.draw ones attention 引起某人的注意10. Big cities are full of cars.be full of 装满，充满The bag full of books.The room i s full of people.The bag full of rice fell off the truck.The basket is full of eggs.The basket full of eggs was sent to the poor child.【典型例题典型例题】1）一屋子的烟。The room .2）鸟巢中全都是兴奋的观众。The net excited audiences.3）满满一袋大米被送到李奶奶家。Granny Li.4）那个小姑娘给了我满满一碗粥。The little girl gave me .
