UNIT 3 SEA EXPLORATION（课件PPT）-【优化指导】2023-2024学年新教材高中英语选择性必修第四册（人教版2019）

UNIT 3　SEA EXPLORATION (单元主题语境：人与自然——海洋探索) They (oceans) provide a breeding ground for life，connect the world and promote development. —Xi Jinping 海洋孕育了生命、联通了世界、促进了发展。 ——习近平 返回导航 高中英语　选择性必修 第四册　R UNIT 3　SEA EXPLORATION 单元素养目标 文化、思维、学习能力目标 了解海洋治理面临的挑战，加强海洋保护意识，增强海洋科研的探索精神；根据上下文判断作者的论点和论据，辩证地看待海洋开发；掌握说明文和议论文的文体特点；正确理解和提炼图表所蕴含的信息和所支持的论点 返回导航 高中英语　选择性必修 第四册　R UNIT 3　SEA EXPLORATION 单元素养目标 语言能力目标 核心单词 tale，extend，negotiate，behold，royal，spice，withdraw，bond，politics，profession，mixture，applaud，manned，migration，meanwhile，exploit，murder，mercy，possession，opponent，log，arrest 返回导航 高中英语　选择性必修 第四册　R UNIT 3　SEA EXPLORATION 单元素养目标 语言能力目标 重点词块 search for，set sail，centre around，lead to，in a league of one's own，under the command of，in return for，withdraw from，reach out across the sea，for the benefit of，in order to，in hand 单元语法 复习动词不定式 写作能力 写一篇关于海洋探索的议论文 返回导航 高中英语　选择性必修 第四册　R UNIT 3　SEA EXPLORATION 单元话题导入 [品读话题短文] On reaching the ocean floor，we may see shrimps and other organisms around hydrothermal① vents.These vents form in volcanically active areas，pouring mineral­rich fluids② into the sea.❶Before the discovery of these creatures，it was thought that all life on the Earth obtained its energy from the sun. However，this discovery has revealed that life forms can obtain nutrients and energy from thermal sources.Knowing that life can exist in these extreme conditions has changed [背记话题词块] ①hydrothermal adj.热液的；水热的 ②fluid n．流体，液体 ③geological adj.地质的；地质学的 返回导航 高中英语　选择性必修 第四册　R UNIT 3　SEA EXPLORATION 单元话题导入 scientific opinion about the chances of there being life elsewhere in the universe.In addition to the vents and remarkable organisms，we cannot miss the Mariana Trench，located in the north­western part of the Pacific Ocean.Its deepest point，known as the Challenger Deep， [分析重难句式] ❶Before the discovery of these creatures，it was thought that all life on the Earth obtained its energy from the sun. 分析：句中“it was thought that ...”为句型“it is/was done that ...