Unit 4 Adversity and Courage Discover 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 Unit 4　 Discover useful structure Grammar—The Present Perfect Continuous Tense To learn the present perfect continuous tense To practice the present perfect continuous tense by completing some exercises Lead in Enjoy an English song & fill in the blanks. I __________________ with a shadow overhead. I __________________ with a cloud above my bed. I have been lonely for so long. Trapped in the past, I just can’t seem to move on. I __________________ all my hopes and dreams away. Just in case I ever need them again someday. I __________________ aside time to clear a little space in the corners of my mind…… have been living have been sleeping have been hiding have been setting The Present Perfect Continuous Tense The Present Perfect Continuous Tense 基本结构： 基本含义：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。 Present Past Future “have / has been + 现在分词” Presentation 1. We have been waiting for you for half an hour. 2. The Chinese have been making paper for two thousand years. 3. I have been learning English since three years ago. The usage of the tense (1) ①现在完成进行时态表示动作还未结束，还要继续 下去。其动作是否继续下去，则由上下文而定。这个时态多用于 动词，如live, learn, lie, stay, sit, wait, stand, rest, study等。 持续 延续性 常和什么时间状语连用呢？ 现在完成时常用的时间状语 since/by+过去时间点 before+现在时间点 for+时间段 these days in the past few days/months/years 最近：lately recently 已经：already 到目前为止：yet, so far, up to now/till, by the time of+时间点 现在完成进行时+表示“持续”的时间状语： all the time, this week/month, all night/morning，several times 1. All these days he has been writing articles to our magazine. 2. He has been promising to help you. Hasn’t he done it? 3. I _______________ (take) part in races for about four years. 4. Jack _______________ (phone) Jane every night for the last week. ②表示动作并不是一直不停地进行，而是在断断续续地 。 have been taking has been phoning The usage of the tense (2) 重复 1. Tom has always been working hard. 2. You have been coughing a lot lately! 3. What have you been doing to my dictionary? ③带有