仁爱八上Unit4Topic1SectionC公开.ppt

授课教师：李阿妹 Unit 4 Our WorldUnit 4 Our World Topic 1 Plants and animals are Topic 1 Plants and animals are important to us.important to us. Section CSection C A good beginning is half done. 良好的开端是成功 的一半。 city countryside rainforests New words vrainforest n. （热 带）雨林 vforest n. 森林 vcover v. 覆盖，遮盖 ；掩盖 n.盖子；罩 vearth n. 地球；土，泥 ；大地 von earth 在地球 上，在世界上； （加强疑问句的语气）到 底，究竟 vsurface n. 表面 vthousands of 成千上万， 几千 vdark adj. 黑暗的； 暗淡的；深色的 n.黑暗；暗处；日暮 vcontrol v.& n. 控制 vclimate n. 气候 vwood n. 木头，木材； （pl)树木，森林 vrubber n. 橡胶； 合成橡胶 vprotect v. 保护 vmain adj. 主要的 vfact n. 事实，现实 vin fact 实际上，事实上 vmake up 组成；化妆； 和解 vlake n. 湖 vsea n. 海，海洋 vocean n. 海洋 drop n. 滴 v. 掉下， 落下；投递；放弃 hole n. 洞，坑 fill v.使充满，装满； 填空 fill with用填 满 dig v.挖（洞、沟 等）；掘 deep adj.深的；厚 的；宽的 everything pron.每件 事，事事 Listen to the tape and Mark T or F according to 1a ( )1.Rainforests cover half of the earths surface. ( )2.We can see everything clearly in the forests. ( )3.Rainforests can give us many useful things. ( )4.In rainforests all the animals live on the ground. ( )5.Without rainforests, the environment would become quite terrible. F F T F T half rainforests in the world Rainforests cover 6% of the earths surface. 2. 6%读作 six percent 1.cover=spread over “覆盖” Language points Thousands and thousands of animals live in forests. Many of them live in the trees over 30 meters from the ground. 3.thousands of 成千上万的（数以千计的） 类似的表达方式： hundreds of 成百上千的（数以百计的） millions of 数以百万计的 注意：表达具体数字时不可使用s形式。 如：两百本书 two hundred books 用复数形式时常跟of 如：数百本书 hundreds of books 4.in the tree 在树上（除树本身之外的人或物） on the tree 在树上（树本身所具有的东西） 5.over = more than 多于，超过 Language points There are lots of tall trees and thousands of other different plants. Its always dark and hot in rainforests and the ground is always wet. Rainforests are very important to us. They are the lungs of the earth. The plants in the forests help to make the air fresher. They also help to control the climate. Rainforests give us wood, rubber, fruit, medicine and so on. We need them so much.But,now, rainforests are becoming smaller and smaller, so we should protect them. 8.smaller and smaller 越来越小 比较级+and+比较级 越来越 注意：多音节形容词在表示“越来越”时，常用 结构是：more and more +形容词原形 如：越来越漂亮 more and more beautiful 7.wood “木头，木材 ” 不可数名词 “树林 ” 可数名词 We walk in the woods after supper. 饭后我们在树林里散步。 Language points 1b Listen to 1a again and finish the following tasks. 1.What does “cover” mean in this passage?( ) A. set up B. spread over C. have D. form 2. We cant get the answer to Question ( ) from the passage. A. What are in rainforests ? B. Why are rainforests important to us? C. What can we get from rainforests? D. What should we do to protect rainforests? B D 3. Why are rainforests “the lungs of the earth”? Because the plants in the rainforests help to make the air fresher. They also help to control the climate. 4.Whats the main idea of the passage? Rainforests are very important to us. The importance of rainforests 1C Group work The importance of rainforests: 1. make the air fresher 2. help to control the climate 3. give us wood, rubber, fruit, medicine and so on 4.save water 5.prevent the water from washing the earth away 6.give animals a good environment 2b complete the passage. Water is _ to all living things. All _ and _ need water. _ also need water to drink, to cook and _ _ . _ water, there could be no life on earth, so we must save water. important plantsanimals Humans to cleanWithout Most plants need lots of water. Water is necessary for all plants. All animals need plenty of water. They cant live at all without water. Humans need water to drink, to cook and to clean. In fact, water makes up the largest part of the human body. Water covers most parts of the earth. It is in lakes, rivers, seas and oceans. It is important to all living things. We must save every drop of water. 2a Read and understand 对是必要的 组成 3 Work alone Spring is warm. Its the best season to plant trees. But how to plant a tree? Do you know? vFirst, dig a hole in the earth, and make sure the hole is deep enough for a tree. vThen, put the tree in the hole, and keep it straight. vAfter that, fill the hole with earth, then make the earth hard with your feet. Finally, water the tree. If everything is OK, the tree will grow new leaves a few days later. When you plant a tree: ( )Put the tree in the hole and keep it straight. ( )Fill the hole with earth and make the earth hard with your feet. ( )Dig a hole in the earth and make sure the hole is deep enough for a tree. ( )Water the tree. If everything is