Unit 3 Sea Exploration Reading and Thinking 课件-2025-2026学年高中英语人教版选择性必修第四册

该高中英语课件以“海洋探索”为核心，通过图片联想、词汇描述（如比喻、拟人修辞）导入主题，衔接中外探险家事件（哥伦布、麦哲伦、郑和），构建从语言输入到文本分析（说明文类型、时间顺序结构）的学习支架，帮助学生系统理解海洋探索的历史与文化脉络。 其亮点在于融合文化意识与思维品质，通过郑和航线图与西方探险家对比，培养跨文化理解，设计事实与观点区分任务、段落主旨归纳活动，提升批判性思维。语法点（what从句、command用法）结合实例练习，强化语言能力，助力学生高效学习，也为教师提供结构化教学流程与多样化活动支持。

UNIT 3 SEA EXPLORATION Lead-in 1. What do you think of when you see the photos? 2. Can you describe ocean using your own language? invader, corals, fish, harmony… The ocean is the cradle of life. (metaphor) The ocean hides secrets like mankind. (simile, personification) The ocean gave my face a salty slap as his tides rose. (personification) What sea animals and plants do you know? What words would you use to describe the sea? What do you know about sea exploration? What do you want to know about sea exploration? Atlantic Ocean Pacific Ocean Indian Ocean Asia Europe Africa Oceania North America South America Pacific Ocean the Cape of Good Hope the Spice Islands India Americas Spain Christopher Columbus (1451-1506) made four trips across the Atlantic Ocean from Spain: in 1492, 1493, 1498 and 1502. He was determined to find a direct water route west from Europe to Asia, but he never did. Instead, he stumbled upon(偶然发现) the Americas. Atlantic Ocean Pacific Ocean Indian Ocean Asia Europe Africa Oceania North America South America Pacific Ocean the Cape of Good Hope the Spice Islands Spain Ferdinand Magellan (1480-1521) sailed west from Spain in 1519 across the Atlantic and Pacific oceans and discovered a route by which ships could sail a complete circle around the world. The Straits of Magellan (麦哲伦海峡), located at the Southern tip of South America are named for him. Look at the title and skim the text. Decide what type of essay it is? A title usually covers the main point of the subject or keywords of the essay. It shares the theme of the essay and tells the reader what to expect. It is an expository essay. A narrative essay is a story with a beginning, middle, and end. A descriptive essay describes a subject and lists interesting details. An expository essay is factual, giving information on a subject. An argumentative essay aims to convince the reader. There are four major types of essay: narrative, descriptive, expository, and argumentative. What are the four major types of essay do you know? Fast-reading Read the text quickly and match the main idea of each paragraph. A. China is also joining with other countries on other important projects. B. Travel from east to west began long before Columbus. C. In ancient times, travel east to west was on the Silk Road. D. China will continue to explore the sea and enhance relationships with other countries. E. The 21st Century Maritime Silk Road has encouraged cooperation and strengthened the bonds between China and the rest of the world. F. Zheng He’s sea voyages built relations with other countries. Para. 1 Para. 2 Para. 3 Para. 4 Para. 5 Para. 6 closing sentence opening sentence “standout” sentence summary sentence opening sentence opening sentence The main idea is sometimes stated in either the opening or closing sentence. If not, look for another “standout” sentence, or summarize the paragraph in your mind by asking yourself “ What is it mainly about?”. Fast-reading Draw the structure of the text Para. 2~3 Para. 4~5 Para. 6 In the past At present Introduction to the topic: Reaching out across the sea In the future Para. 1 How is the passage developed? The passage is developed chronologically.[ kr n l d kl ]按时间顺序 Which is introduced in each exploration? Region Event Purpose 句意:在古代,中国丝绸经由一条陆路运到印度、中东和罗马,这条路就是有名的“丝绸之路”。 In ancient times, silk from China found its way overland to India, the Middle East, and Rome, along what became known as the Silk Road. what引导宾语从句 what 引导名词性从句 什么 ......的人/事/物/地方...... 主语 宾语 表语 从句中 1. He has got what he wants . 2. The girl is no longer what she used to be. 3.After what seemed like hours he came out with a bitter smile. 从句中作宾语 从句中充当表语 从句中充当主语 表示“……的人或的样子 表示“……的东西或事情” 表示“……的时间” 似乎过了几个小时他才苦笑着出来。 4. In 1492, Columbus reached what is now called America. 1492年哥伦布到达了现在所称的美洲大陆。 表示“……的地方” 从句中充当主语 Over the centuries, further trading allowed more exploration of the regions to the west of China, as recorded in Du Huan's Record of My Travels in the eighth century. as recorded 是过去分词作方式状语,是as (it is )recorded 的省略。 用于此句式的这类动词,多是“计划,想象,预料,叙述,描述,提及,说及,显示,指出”之类的词,常见的还有: as expected 正如预料的那样 as imagined 正如想象的那样 as arranged/planned 正如计划的那样 as seen from above 正如从上述看的那样 as said before正如说过的(那样) as mentioned 正如提到的(那样) Practice : 1. This explanation turned out to be a mess _. 这个解释如所预料的变成了一团糟。 2. The building of the new bridge will go ahead_. 新桥的修建将会按计划进行。 as expected as planned 3. _ in tales,a mermaid is a beautiful woman with a fish tail. 按照故事里描写的,美人鱼是长着鱼尾巴的美丽女子。 As described command 的用法: 1 )用作名词n. 命令,指挥;司令部,指挥部;[计算机]指令;控制力) The army is under the king's direct command. 军队由国王直接统帅。 under one’s command under the command of sb 由……指挥/统帅 He has a good command of French. 他的法文很好。 have a good command of 精通/擅长...... The general issued a command that all of them should come at six o'clock. 将军颁布了一道命令,所有的人都要在六点钟到。 issue a command 发布命令 2) command用作动词: vt. 指挥,控制,命令;命令 vi. 给出命令;命令,指令; command 后接宾语从句时,需用虚拟语气:sb. +(should)+动词原形。 同义转换: I command him to go at once. I command that_. 翻译: He was told to command his temper. he (should) go at once 他被告知要控制自己的脾气。 …there are still many other places left to explore. 结构:“there be+名词+非谓语动词作定语” 1)There are many young people _(work)in the fields. 2)There were ten people_(kill) in the accident. 3)There was nobody _ (look)after the kid. working 现在分词作定语表主动进行 killed 过去分词分词作定语表被动完成 to look 不定式作定语表动作未发生 有时过去分词也可表状态。 There were some old man seated in the back. Scan the text and fill in the table with the correct names. Name Description The name of the trade route between China and the West Its kings sent gifts such as giraffes to China An area currently being explored for scientific reasons A destination of silk and a major European capital the Silk Road African royal families the Arctic Rome Read for details Name Description The modern country name for Ceylon The historical period when China expanded maritime exploration to other regions The author of Record of My Travels The commander of the seven fleets The person who wrote stories that inspired European explorers Sri Lanka the Ming Dynasty Du Huan Zheng He Marco Polo Read for details Which countries reached out across the sea in the past and why? What benefits and problems did those countries get from doing this? What effects did reaching out across the sea in the past have on the world? What do you think is the significance of the Belt and Road Initiative? Make notes under two columns: Facts and Opinions. Facts are statements that can be proven. Facts may be true or false. 事实是可以被证明或验证真伪的。韦伯斯特的词典对“fact”的定义是“anything that is done or happens; anything actually existent; any statement strictly true; truth; reality” Facts (事实) Opinions (观点) Opinions are statements that cannot be proven. Opinions can be argued. Opinions may be supported with facts. 观点是作者想要表达的思想或情感,它无法被证明是真实的还是虚假的,但可以获得一定的支持。作者在表达观点时,常常使用“I believe,generally,it is thought,it seems to,in my opinion”等或运用描述性的词语,如pretty,funny等以及表示比较的词语,如best,worst等。作者的观点可能是正确的,但也可能是错误的。 学会识别观点与事实,可以帮助我们在阅读时进行批判性的思考,使我们不会轻易地被读物的内容所误导。在写作时,恰当地运用事实和观点,还能使我们的文章更具有说服力。 Question Fact Opinion Which countries reached out across the sea in the past and why? What benefits and problems did those countries get from doing this? European explores, China, India, Ceylon, African royal families; for trade The land and sea routes remained active channels between different cultures for centuries; Generally speaking, the result was positive, as it advanced the spread of knowledge, technology, and goods, and made the world a smaller place. Question Fact Opinion What effects did reaching out across the sea in the past have on the world? What do you think is the significance of the Belt and Road Initiative? The land and sea routes remained active channels between different cultures for centuries; Generally speaking, the result was positive, as it advanced the spread of knowledge, technology, and goods, and made the world a smaller place. 26 What is the Belt and Road Initiative? the Silk Road Economic Belt (丝绸之路经济开发带) Maritime Silk Road(海上丝绸之路) • The Belt and Road Initiative (BRI) is also known as the Silk Road Economic Belt and the 21st-century Maritime Silk Road, originally announced by President Xi Jinping of the People's Republic of China during his official visits to Kazakhstan (哈萨克斯坦) and Indonesia in September and October 2013. •“一带一路”倡议也被称为“一带一路” 丝绸之路经济带与21世纪海上 丝绸之路最初是由习近平主席宣布的 在正式访问期间,他将访问中华人民共和国 哈萨克斯坦(哈萨克斯坦)和印尼在9月 2013年10月。 27 • China's “Belt and Road Initiative” (BRI) is a planned multitrillion-dollar infrastructure program that is intended to link China with more than 100 countries through railroad, shipping and energy projects. • The BRI will recreate the Silk Road, an old network of trading routes between the East and the West, by investing large sums of money into other countries to build such infrastructure projects. Lavf58.29.100 Codec by Bilibili XCode Worker v4.8.33(fixed_gap:False) 256513.55 Lavf57.83.100 $