Unit 5 Developing ideas 课件-2022-2023学年高中英语外研版（2019）选择性必修第四册

UNIT 5　 Into the unknown --- Developing ideas 1. Students could learn to memorize some words and phrases. 2. Students could get the main idea of this passage. 3. Students could write sentences about this topic. Learning Aims: 新单词短语 shipwreck /ˈʃɪprek/ n. 失事的船；沉船 archaeological /ˌɑːkɪəˈlɒdʒɪk(ə)l/ adj. 考古学的； coral /ˈkɒrəl/ n. 珊瑚 millimetre /ˈmɪlɪˌmiːtə/ n. 毫米 barreleye /ˈbærəlaɪ/ n. 管眼鱼 upwards /ˈʌpwədz/ adv. 向上，朝上 trench /trentʃ/ n. 海沟 New words! New words! 新单词短语 equivalent /ɪˈkwɪv(ə)lənt/ adj. 等同的；等值的； stack /stæk/ v. （使）整齐地堆起；摞起 furthermore /ˌfɜːðəˈmɔː/ adv. 此外；而且； notable /ˈnəʊtəb(ə)l/ adj. 显要的；显著的；值得注意的 substance /ˈsʌbstəns/ n. 物质 vessel /ˈves(ə)l/ n. 船；舰 drilling /drɪlɪŋ/ n. 钻探；勘探 As you read, notice the discourse markers used in the text, eg in addition, also, however, furthermore, as well as. These markers function like road signs, helping you connect ideas and understand the writer’s attitude and opinions. Learning to learn 重点词汇 discourse 论文 ; 演讲 in addition 此外 furthermore 此外 Look at the pictures and answer the questions. 1. What are zones in the ocean? Sunlight Zone, Twilight Zone, Midnight Zone and Abyssal Zone. Which parts of the ocean have been explored? Give your ideas. Sunlight Zone, Twilight Zone. 1Lying under waters across the globe are an estimated three million shipwrecks. All of them represent attempts over the centuries to explore Earth’s furthest corners. Among these is the Esmeralda, the earliest wreck from the age of the European exploration of Asia. Today, some 500 years after the Esmeralda set sail, there is little – if any – land on our planet left unexplored. We have more detailed maps of the Moon, and even of Venus and Mars, than we do of Earth’s own sea bed. 1据估计，全球有300万起沉船事故。所有这些都代表了几个世纪以来探索地球最遥远角落的尝试。其中包括埃斯梅拉达号，这是欧洲探索亚洲时代最早的沉船。今天，在“埃斯梅拉达”号启航约500年后，我们的星球上几乎没有——如果有的话——未被探索的土地。我们有比地球海床更详细的月球地图，甚至金星和火星地图。 2 Given our limited knowledge, it is perhaps no surprise that exploration of the oceans continues to