(
课件网) 1 Starting out 外研版 七年级上 Unit 5 The power of plants 1. What’s the video mainly about 2. What parts do plants have The parts of plants. Root(根)and shoot(枝) (stem(茎), leaves, flowers and fruits.) Warming-up Learning Objectives After completing the unit, we will be able to: use words and expressions in the unit to describe plants. use the simple future tense to talk about the benifits of plants. describe the importance of plants. Learning Objectives By the end of this lesson, we will be able to: use words and expressions in the unit to describe plants. use the simple future tense to talk about the benefits of plants. describe the importance of plants. What’s happening in the picture Look at the picture and think about the question. A green plant is breaking through the ground. （破土而出） Let’s explore the amazing world of plants. 1. Look at the picture and answer the questions. What amazing facts about plants are mentioned in the video Plants are everywhere, even in space. Some bamboo can even grow 91 centimetres in just one day. People began to grow their food over 10,000 years ago. People use different plants to make medicines. What facts about plants do you know 植物的定义和分类 植物是具有叶绿素、能进行光合作用的自养生物。这些特征是植物最为明显的特征，但凡是都有例外，像寄生植物和腐生植物就没有叶绿素也不进行光合作用。根据是否含有叶绿素又把植物分为非绿色植物与绿色植物植物一般分为八类，分别是：裸子植物、被子植物、苔藓植物、蕨类植物、藻类植物、种子植物、地衣植物、菌类植物。 植物的结构和功能 植物体最主要的特征是细胞壁，这是所有植物细胞都有而所有的动物细胞都没有的一大重要特征。植物的结构包括根、茎、叶、花、果实和种子，这些器官各有其特定的功能，如吸收水分和无机盐、输送物质、进行光合作用、繁殖后代等 I know the fact that plants have strong vitality(生命力)。 Do you think plants are amazing Why or why not Yes, I think plants are amazing! They provide habitat (栖息地) and food for animals and play an important role in maintaining (保持） the balance of our ecosystem（生态系统）. 2. Look at the pictures and answer the questions. 1What are the people doing 2 What can plants do for us Plants can be our food. The girl is buying some vegetables. 2. Look at the pictures and answer the questions. 1What are the people doing 2 What can plants do for us The man is working on wood. Plants can be our materials for house. 2. Look at the pictures and answer the questions. 1What are the people doing 2 What can plants do for us The man and the woman are weighing the herbs. Plants can be our medicine. 2. Look at the pictures and answer the questions. 1What are the people doing 2 What can plants do for us The girl is drawing. Plants can be our inspiration （灵感）of art. What else can plants do for us Breathing: Plants help us breathe. They take in CO2 and give us O2. Beauty: Plants make the world look pretty with their flowers and green leaves. They can also help us relax and feel happy. Cleaning ... ...
