Unit 3 Learning about Language 课件-2022-2023学年高中英语人教版（2019）选择性必修第四册

人教版（2019）选择性必修四 Unit 3 Sea Exploration Learning About Language Build up your vocabulary Learning objectives By the end of this section, you will be able to: identify words based on their meaning in English; grasp some phrases, including their meanings and usages; use words and phrases you have learned to complete a passage; learn about Zac’s adventure and analyze his spirit. Retell the essay we have learned. silk road Du Huan’s Record of My Travels Zheng He’s voyages to the Western seas 21st Century Maritime Silk road reach out across the sea far Complete the passage using the words from the text. There are many t____ and legends about how seamen explored the oceans in the past. But how many of them are reliable? The fact is that they needed multiple ways to keep safe after s______ sail. 1. Using nature to help is the first and most useful form of exploration. This includes the North Star, Sun and clouds. 2. Using the weather. Experienced captains could see the b_______ between weather and dangers. Either they withdrew the fleets or e________ their voyage. 3. Using the sea. Skillful sailors could use tides and currents to carry ships back to the shore or pass through narrow c_________. These skills helped seamen explore the seas and discovered new lands. They needed not only the instruments but also courage and luck. ales etting onds xtended hannels Write down the word that matches each definition. Then find the sentences containing these words in the text. tale royal negotiate withdraw extend bond league channel bond league extended tales Underline as many phrases as possible in the essay we have read. form the foundation“形成基础” find one’s way“找到出路” a sight to behold“壮观的景象” in return“作为回报” in hand“在手头；可供使用” reach out across the sea“跨越海洋” Complete the sentences with the correct forms of the phrases in the box. a sight to behold in hand withdraw from in return 1. Henry Norman Bethune devoted his life and profession to helping people without expecting an