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1、Unit 2 Plant a plant Lesson 8 Why Are Plants Important,If there is no tree in the world, Then,But, if we plant more trees. Then,Think about it: What plants grow near your home? Why do we need trees,Do you know,season,reason,si:zn,ri:zn,eat,meat,heat,wheat,hi:t,wi:t,big,pig,dig,dig,dig a hole,anythin
2、g,something,nothing,Heat is a kind of energy,原因，理由,热，加热,没有东西,挖,能量,made,shade,eid,airplane,air,e,please,pleasant,pleznt,between,among,阴凉处,空气,adj 使人愉快的,两者之间,三者以上,in the shade,Language points: 1.so many/much/few/little+名词 There are so many students in our school . I have drunk so much water. 2.Its plea
3、sant to do 做很愉快 Its pleasant to talk with our friends. 3.nice and +adj/adv 很，挺，.得很 Its nice and hot in summer,4.take energy from 从获取能量 All plants take energy from the sun 5.in a word 总之，一句话 In a word, our teacher loves all of us. 6.be important to 对很重要 Studying hard is important to the students. 7.c
4、arry away 带走 The flood carried plenty of soil away in summer,be made from 由制成（看不出原料） be made of 由制成（能看出原料,The desks are made of trees,Paper is made from trees,Functions of trees (plants,Shelter: 1.Many animals live in the forest. 2.People use wood from trees to build houses and furniture,Food or med
5、icine: 1.People can eat plants Or use them as medicine. 2.Animals eat the fruits from the trees,Clothing and school things: 1.People can make clothing from plants 2.Books,papers,pencils and Erasers all come from plants,Environment: 1.Plants help make the air clean and fresh. 2.The plants cover the soil and can stop the dust,Thank you
