Unit 1 Science and Scientists Listening and Speaking 课件-2023-2024学年高中英语人教版（2019）选择性必修第二册

高中英语新人教版选择性必修二 SCIENCE AND SCIENTISTS XB2U1-1 Listening and Speaking 听说 What can you see in the video? Some scientific phenomena. Pre-listening 1. What can you see in the picture? 2. What is he/she doing? What does it have to do with science？ 1. What can you see in the picture? 2. What is he/she doing? a boy a giant dish The boy is whispering into the smaller circle and the dish can make his voice louder. a piano keyboard play with feet Maybe it shows how sound works. 1. What can you see in the picture? 2. What is he/she doing? 1. What can you see in the picture? 2. What is he/she doing? It is a hall of mirrors. Maybe it has to do with the principles of reflection. 1. What can you see in the picture? 2. What is he/she doing? a blue screen with bright lights The boy is staring at the light,it must be about light or eyesight. 1. What can you see in the picture? 2. What is he/she doing? a white light; cast shadows in the colour of the rainbow This is probably an experiment involving the composition of light. sound Strategy: Predict by using picture： 1. Each picture：What is happening？People？ how many？ action？feelings？ Something？ look like？Special？Why？ 2. All pictures：What do they have in common？What do they indicate？ light sound science museum. visitors experience science through interactive learning exhibitions(互动式学习展览). light While-listening Listen to the conversation and see if your answers for Activity 2 are correct. Then write down the letters (A–E) for the photos in the order that you hear them described. 1. ________ 2. ________ 3. ________ 4. ________ 5. ________ D C E B A order: Listen again and complete the descriptions of the photos above. Photo A: A giant dish; when you speak into it, it ________ the sound back and ________________ . You can use it to speak in a ________ to someone 17 metres away. Photo B: A giant that you can use