Unit 5 Into the unknown Understanding 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 --- Understanding ideas 1. Students could learn some words and phrases. 2. Students could get the main idea of this passage. 3. Students could write sentences about this topic. Learning Aims: 玛雅的神秘 The Mysteries of THE MAYA What is your understanding of this title？ Share with others Brainstorming: Before learning this passage, what ideas come to your mind? 1. mystery 2. Maya 3. ... Look at the sentences and answer the questions. What do you know about the ancient civilisations? Look at the sentences and answer the questions. Ancient India, Ancient Babylon, Ancient Egypt and Ancient China. What do you know about the ancient civilisations? a Maya civilisation has been surrounded by mystery since its rediscovery in the 19th century. b But the greatest mystery of all is what caused the Maya to abandon most of their great cities. c Although his theory has been dismissed by scholars, it shows how powerful the secrets of Ancient Maya civilisation are among people. d Research also suggests that those natural disasters may have led to the decline of the Maya. e Meanwhile, the rise and fall of this civilisation must also leave us thinking about our own past, present and future. f Some research seems to indicate that the Maya people themselves may have played a part in their downfall.       Choose the topic sentences. Choose the topic sentences. The mysteries of the Maya Para. 1: Introduce the topic Para. 2: the achievements of Maya civilisation Para. 3: the decline of Maya civilisation Para. 4-5: The reasons for the disappearance of Maya Civilisation Para. 4: human causes Para. 5: natural causes Para. 6: the mysteries of Maya Civilisation remain to be solved To introduce the topic What is the main idea of this part? 1 Intrigued by Maya civilisation from a very young age, 15-year-old Canadian William