Unit 4 Adversity and Courage Discovering Useful Structures课件-2022-2023学年高中英语人教版（2019）选择性必修第三册

ADVERSITY AND COURAGE Learning About Language Discovering Useful Structures 语法 By the end of the class, you will be able to: 1. learn about the form and function of the present perfect continuous tense --- have/has been doing; 2. learn to review and sum up the differences between have/has done and have/has been doing; 3. learn to talk about and write the things about hobbies and recent activities with the present perfect continuous tense --- have/has been doing. Learning Objectives Discovering the rules Part 1 3 Scene 1 Welcome to the Endurance, I am the captain. Let’s start our expedition. After the advertisement was posted, we have received more than 4000 applications. Think about whether they should be chosen. MEN WANTED for a dangerous journey: small wages, bitter, cold, long months of complete darkness, constant danger, and safe return uncertain. Honor and reward will follow if it is successful. Ernest Shackleton 4 Applications I have been working on the ship since I was young. I have been studying three foreign languages for 10 years. Jack sailor 48 years old Mike artist 30 years old I have been dreaming of the expedition. Perce jobless 19 years old 5 Observe and Discover Find the sentences using the present perfect continuous tense from the previous text and discuss the function of the tense. This is the adventure that I have been dreaming of. (diary 1, Para.1) We are now camped on the ice and we have been managing to survive, but spring is coming, and the ice will soon begin to melt. (diary 2, Para.3) We have been struggling for days, but things on Elephant Island are going from bad to worse. (diary 3, Para. 1) 6 Summarize the rules on your own. 现在完成进行时的结构 肯定式：have/has been doing 否定式：have/has + not + been doing 一般疑问式：Have/Has + 主语 + been doing...? 现在完成进行时的用法 表示动作从过去某一时间开始一直持续到现在，可能刚刚停止，也可能仍在继续。 经常与现在完成进行时连用的时间状语 for +时间段/since+时间点 this week/this month all day/all the morning/all the time recently/these few days/over/in the past five years, 等表示一段时间