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1、UNIT 2Plant a Plant Lesson 13Why Are Plants Important?THINK ABOUT IT1. Are there a lot of trees where you live ? Why or why not?2. Why do we need trees?3. What kind of things can plants do?Think about it LISTEN TO THE TAPE AND ANSWER THE QUESTIONS .1. What are Danny, Jenny and Brian talking about?Th
2、ey are talking about trees and the reason why we need them .2. Donuts dont grow on trees, do they? No, they dont. 3.Why do we need trees ?v3.Why do we need trees ?vClean the air. vGive us food.vMake and build things with trees .vSit under a tree in the shade.vMake books from trees. vMany animals liv
3、e in trees.vCover the soil. vTake energy from the sun and make it into food. people and animals need the food to live. What is energy ?Light is energy . Heat is energy. energypleasantFASCINATING FACTS Some animals eat only one plant. Pandas eat bamboo only. Big pandas eat eighteen kilograms of bambo
4、o every day!bambooDO YOU KNOW THE DIFFERENCE?1.Its pleasant to walk among the trees.Im very pleased you can come. pleasant 指一般性的好，强调所修饰对象所具有的品质使人觉得好玩、有趣、舒服，含有客观性。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。I sit between Danny and Jenny.among 一般用于三者或三者以上之中。between 一般用于两者之间。die,dead,death与与dying这四个词均表示“死”.die是表
5、瞬间动作的动词，意为“死亡;断气”，强调动作.The girls grandpa died five year ago.这女孩的祖父五年前死了。注意：die不可和表示一段时间的状语连用。dead是形容词，意为“死的”，通常和be动词连用，表示死的状态。Her father has been dead for a year.她父亲已死了一年了.dying 是die的现在分词，常用做形容词，意思是“要死的：濒临死亡的”。The old man is dying.这老人已经奄奄一息了。death是die的名词形式，意为“死，死亡”。eg；It makes me very sad when I thi
6、nk of my grandpas death.当我想起我外祖父的死我就很难过。.with与与inwith指“用（工具、手段等）”，一般接具体的手段和工具。例如:He broke the window with a stone.他用石头把窗户打破了。in表示“用”时，指“以方式，用语言（语调、笔墨、颜色）”等。例如：Say it in Chinese.用汉语说。He told me the news in a low voice.他低声告诉我那个消息。RETELL THE TEXT. Trees help_ the air.They give us _-like apples,bananas
7、and oranges.We can _and _things with treeslike chairs, beds and houses! We can sit under a tree in the _.Plants_ the soil. Then the wind and water dont _ the soil away. All plants take _ from the sun and make it. Into food. People and other animals need the food to_.Without food, they would _. clean
8、foodmakebuild shadecovercarryenergylivedieWhy do we need plants?Please write three answers to this question. PRACTICE Choose the best answer. 1.Are there many trees_?A.where do you live B. You live where C.where you live D. you live there 2. Lets _trees and why we need them. A. to talk about B.talki
9、ng about C.talk at D. talk about 3. Donuts dont grow _trees. A.in B. on C. at D.from CDB4. We make books _trees. A.from B. on C. at D.in 5. People and other animals need food _.A.living B.live C.to live D.lives6.Miss Liu walks_the students.A.between B.among C.in D.for7.People cant live _air or water.A.with B. without C.in D.and ACBB SUMMARYNew words:reason pleasant among air shade energynothing die heat bamboo kilogram Phrases:in trees makeintoSentence:Why?BecauseWrite a diary about why we need trees.
