(
课件网) Unit 4 Amazing Plants and Animals 人教版 英语（八年级上册） Section B 3a-3c 01 02 03 04 教学目标 能够了解蓝鲸的一些内容；通过分析第一段的由第一人称改为第三人称的内容，了解到改写的注意点。 能够客观冷静地表达个人观点；通过观察，分析，总结等多种手段，深化发散性与总结性思维。 引导学生了解生物蓝鲸对于生态系统的重要性，从而进一步了解动植物对于生态系统的重要性。 能够通过各种写作活动，锻炼自己的写作能力；同时归纳总结各种议论文的写作要点。 2. Whose birthday is it Pre-writing 01 写前 Watch a vedio What does this video talk about What do you know about the blue whale The blue whale is the largest animal on earth. Part 2. Read and learn The blue whale is the largest and heaviest animal on earth. It can weigh as much as 200 tons. Many people like watching blue whales swim, and they think it is one of the most beautiful things to see. Blue whales live in all oceans except the Arctic Ocean. They eat a lot, but they eat some of the tiniest animals in the ocean. A blue whale can eat around four tons of these a day. Blue whales can live up to 90 years. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. This food lasts for over a year and it helps to create a lively and healthy ecosystem. Blue whales play an important role in our world, so we must protect them. 在地球上 多达，达到…… 之多 / n/ n. 大海；海洋 / k sept/ prep. 除……之外；除了 tiny / ta ni/ adj. 极小的；微小的 live up to 达到；符合 lively / la vli/ adj. 精力充沛的；生机勃勃的 扮演一个重要的角色 Read the text and complete the table. 3a Blue whale facts Weight Where they live Food How long they live Importance in nature 1.What do blue whales mainly eat A) Large fish B) Tiny ocean animals C) Sea plants D) Other whales 2.Where do blue whales NOT live A) Pacific Ocean B) Atlantic Ocean C) Arctic Ocean D) Indian Ocean How much food can a blue whale eat in one day A) One ton B) Two tons C) Three tons D) Four tons Blue whale facts Weight Where they live Food How long they live Importance in nature as much as 200 tons in all oceans except the Arctic Ocean some of the tiniest animals in the ocean up to 90 years When a blue whale dies, it becomes food for many animals and it helps to create a lively and healthy ecosystem. Check answers. Map &Gap地图填空 Question1:Circle the areas where blue whales might be found. Question2:Why no blue whales in the Arctic Map &Gap地图填空 Q1:Circle the areas where blue whales might be found. Q2:Because it is too cold/little food. Status Analysis(现状分析)：The blue whale is endangered and there are approximately 10,000 of them remaining.(蓝鲸濒危,现存约1万头) The threats they face include sonar interference (声呐干扰), ship collisions(船舶撞击) and plastic pollution(塑料污染), which seriously affect the survival of blue whales. The Current Situation and Threats of Blue Whales Human Trouble List 人为麻烦清单 Question：Which human activities can harm blue whales Ans ... ...
