新冀教版八年级下册英语Lesson 8 Why Are Plants Important？课件

1、Unit 2 Plant a Plant!Lesson 8 Why Are Plants Important?学习目标 Master the new words and phrases,the meaning of text.Why do we need plants?In our daily life,why are plants important?Let the Ss can learn to protect the trees and plants.新课导入思 考1. How many kinds of trees do you know? 2. Do you know the imp

2、ortance of trees? 新课导入思 考Why do we need trees ?(1) Clean the air. (2) Sit under a tree in the shade.(3) The trees and plants take energy from the sun and turn it into food.(4) Medicine and clothing are made from trees and plants.(5) Many animals live in the forest and eat the fruit from the trees.(6

3、) Cover the soil. (7) Plants make everything look beautiful.新课讲解Danny, Jenny and Brian are walking in a forest.Jenny: I love this forest. There are so many trees and plants. The air is always clean and fresh.Brian: Yes. Trees and other plants help clean the air.Listen and read.新课讲解Jenny: Thats true.

4、 Its pleasant to walk in the forest. When the weather is sunny and hot, you can sit in the shade under a tree. It s nice and cool.Danny: Im hungry! Maybe I can eat a plant. Brian: Sure, Danny! Look, there is an apple tree over there!新课讲解Danny: Is there a donut tree?Brian: Donuts dont grow on trees!J

5、enny: Trees and other plants are important to people. They help us fulfill our basic needs.Brian: Thats for sure. People use trees and other plants in many ways. The trees and plants新课讲解 take energy from the sun and turn it into food. Medicine and clothing are also made from trees and plants. Jenny:

6、 The forest is important to animals, too. Many animals live in the forest and eat the fruit from the trees. They eat other plants, too. Brian: And plants cover the soil. That way, the wind and water dont carry the soil away. Plants also make everything look beautiful. Danny: In a word, we cant live

7、without plants!新课讲解Language point 1Its pleasant to do 做.很愉快e.g. Its pleasant to live in beautiful surroundings.生活在优美的环境里是令人愉快的。e.g. Thats because beautiful handwriting can give someone agood impression and also its pleasant to read.这是因为美丽的笔迹，可能给别人留下良好的印象，并且愉快的阅读。新课讲解pleasant 指一般性的好，强调所修饰对象所具有的品质使人觉得

8、好玩、有趣、舒服，含有客观性。e.g. We had a very pleasant time at their house last night.昨晚我们在他们家过得很愉快。e.g. I hope you will have a pleasant holiday.我希望你过一个愉快的假日。pleased 只用于人，不用于物，指某人满足了自己的愿望而感到高兴。e.g. Im very pleased you can e. 新课讲解Language point 2They help us fulfill our basic needs.help (sb.) (to) do sth. 帮助（某人）

9、做某事，其中to 可以省略e.g. The cleaner helps clean the floor.这台除垢器有助于清洁地板。help sb. with sth. (在某方面帮助某人) 常与help sb.(to)do sth. (帮助某人做某事)进行同义句转换。e.g. Jack likes to help his sister learn English.=Jack likes to help his sister with English.杰克喜欢帮助他的妹妹学习英语。新课讲解Language point 3Medicine and clothing are also made fr

10、om trees and plants.be made from 与be made ofbe made from 由制成be made from从成品中看不出原材料，制成物已改变了原材料的性质。The cake is made from a mixture of flour, sugar and eggs. 这个蛋糕是由面粉、糖和鸡蛋的混合物做成的。be made from从成品中看不出原材料，制成物已改变了原材料的性质。The desks are made of wood. 这些桌子是由木头制成的。新课讲解Language point 3In a word, we cant live wit

11、hout plants!in a word总而言之，相当于in one worde.g. In a word, I cant go out as I have many things to do. 总而言之， 我不能出去， 因为我有许多事情要做。新课讲解与word有关的其他短语：have a word with与谈一谈Can I have a word with you？我能和你谈一谈吗？have words with. . . 与争吵He had words with his wife last night. 昨晚他和他的妻子吵了一架。in other words换言之；换句话说In oth

12、er words, youll come instead of him. Right? 换句话说，你将代替他来。对吗？新课讲解1Read the lesson and tick the items mentioned.People can eat plants or use them as medicine. Plants help make the air clean and fresh. Many animals live in the forest. Books，paper，pencils and erasers all e from plants. Animals eat the fr

13、uit from the trees. The plants cover the soil and can stop the dust. When the weather is sunny and hot，people can sit in the shade under a tree. The plants make everything look beautiful. People use wood from trees to build houses and furniture. Lets Do It!新课讲解2 plete the passage with the correct fo

14、rms of the words in the box. There are many trees and plants. Its _to walk in the forest. When the weather is sunny and hot，you can sit in the _under a tree. Trees and other plants are one of our _needs for life. Many things are made from trees and plants. Most animals live in the _and eat the fruit

15、 from the trees. And plants _the soil. That way, the wind and water dont carry the soil away. pleasantshadebasicforest(s)coverbasicshadeforest coverpleasant新课讲解3Work in pairs. Think about why we need plants.Discuss it and fill in the mind map. You can use some ideas from Activity 1. Environment：_Clo

16、thing and school things：_ Shelter：_ Food or medicine：_ Functions of trees (plants)当堂小练一、词语运用1Food is our_(基本的) need.2They have a_(令人愉快的) trip.3People like to have a rest in the_(阴凉处)of the tree.4Trees and other plants help us_(满足) some needs.5The air is always clean and fresh in the_(森林)basicpleasan

17、tshadefulfillforest(s)当堂小练二、单项选择1. Plants cover the soil. Then the wind and water dont carry the soil _. A. in B. out of C. away D. on2. Are there many trees_? A. where do you live B. you live where C. where you live D. you live there CC当堂小练3. Lets _ trees and the reason why we need them. A. to talk about B. talking about C. talk at D. talk about4. Donuts dont grow _ trees! A. in B. on C. at D. in 5. Can you see seven monkeys _ the tree. A. on B. in C. of D. above 6. The desk