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课件网) Reading（2） Unit 3 The Earth Retell the text Protect the Earth Places on Earth Plants and animals People on Earth Pollution What must we do forests rivers mountains fields very hot very cold different plants large small different animals on the land in the sky under the water many people air, water and food our home stop doing these things important protect the Earth future pollution pollutes the air rubbish kills animals and plants 1 The Earth provides us with air, water and food. a gives b shows 2 We burn things to make energy. a set … on fire b make … very strong 3 This pollutes the air. a makes … clean b makes … dirty 4 This pollutes the Earth and kills animals and plants. a cleans b makes … die 5 It is important for us to protect the Earth for our future. a keep ... safe b change P32 C1 Do you know the meanings of the words in italics Circle the correct answers. 1 Tom: The water from the factory is dirty. Bob: Yes. We must not let it (1)_____ the river. We must do something to (2)_____ the river. Tom: Yes. It’s (3)_____ for us to do something about this. 2 Jack: Forests are very important. Do you know why Joe: Of course. They (4)_____ us _____ a lot of things. For example, wood and fruit. Jack: You’re right. Many people still (5)_____ wood to make energy. P32 C2 Complete the conversations with the words from the box. burn important pollute protect provide … with burn pollute protect important provide with Language Points P29 About 70% of the Earth is covered by water. 1. “百分数+of+名词”结构做主语，谓语动词要与of后名词的单复数保持一致。 现在将近50%的土地适合种庄稼。 Nearly 50% of the land is now suitable to grow crops. 我们班60%的学生是女孩。 60% of the students in our class are girls. 2. be covered by “被……覆盖”。 秋天这条路盖满了树叶。 Much of the land is covered by forest. be covered with “覆盖”，表状态。 The road is covered with leaves in autumn. 秋天这条路盖满了树叶。 P31 Protect The Earth(标题) 3. Earth是名词，意为“地球”，单独使用时，其前需加定冠词the，首字母通常大写。但当表示 “在地球上”时不加定冠词the，即“on Earth”。 月亮围绕地球转。 The Moon goes round the Earth. 我们生活在地球上。 We live on Earth on earth 还有“究竟；到底”，常置于What, when 等疑问词之后，以加强语气。 (1).Why on earth didn't you tell me the truth 你到底为什么不跟我说实话 (2).Who on earth told you that 那件事究竟是谁告诉你的 4.protect做及物动词，意为“保护”，其后可直接接宾语。 n. protection 保护环境是我们的责任。 It's our duty to protect the environment. 你的雨衣可以使你免遭雨淋。 Your raincoat can protect you from the rain. protect常用于“protect sb./sth. from ...”结构中，意为“保护sb/sth免受…伤害”。 戴墨镜可以保护眼睛不受阳光刺激。 Wearing dark glasses can protect your eyes from the sun. 5. There are forests and rivers, mountains and fields. There are/ is… (某地)有(某物) (1) 书桌上有一把尺子和两支铅笔。 There is a ruler and two pencils on the desk. (2) 花园里有些花和一棵树 ... ...
