1、 Unit 2 Plant a plant Lesson 8 Why Are Plants ImportantIf there is no tree in the world,Then But,if we plant more trees.ThenThink about it:What plants grow near your home?Why do we need trees?Do you know?seasonreasonsi:znri:zneatmeatheatwheathi:twi:tbigpigdigdigdig a holeanythingsomethingnothingHeat
2、 is a kind of energy原因，理由原因，理由热，加热热，加热没有东西没有东西挖挖能量madeshadeeidairplaneairepleasepleasantplezntbetweenamong阴凉处阴凉处空气空气adj 使人愉快的使人愉快的 两者之间两者之间三者以上三者以上in the shadeLanguage 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 pleasant to do 做很愉快Its
3、pleasant to talk with our friends.3.nice and+adj/adv 很，挺，.得很Its nice and hot in summer4.take energy from 从获取能量 All plants take energy from the sun5.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.carry away 带走The flood carried
4、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 medicine:1.People can eat plantsOr use them as medicine.2.Animals eat the fruits from the trees.Clothing and school things:1.People can make clothing from plants2.Books,papers,pencils and Erasers all come from plantsEnvironment:1.Plants help make the air clean and fresh.2.The plants cover the soil and can stop the dust.Thank you
