2017-2018学年牛津译林版八年级英语下册课件：Unit 3 Online tours Grammar (共26张PPT)

Unit 3 Online tours Grammar Pre-task Enjoy a song 　 It’s been a long day without you my friend 　　And I’ll tell you all about it when I see you again 　　We’ve come a long way from where we began 　　Oh I’ll tell you all about it when I see you again 　　When I see you again Differences between the simple past tense and the present perfect tense (1) 主语 + 动词过去式 + 其他 主语 + have/has + 动词过去分词 + 其他 Tense Structure (结构） the simple past tense the present perfect tense Pre-task Find out the tenses mainly used in the passage Millie had a dream last night. She dreamt of travelling to the USA. Millie has been to the USA once. She went there in 2013. She had a wonderful time there. Her uncle is in the USA. He has lived there fore three years. Differences between the simple past tense and the present perfect tense (2) 表示过去某时发生的动作，和现在 　　　　（有/没有）关系。 表示过去发生的某一动作,强调和现在 　　　　（有/没有）关系。 没有 有 Tense Concept (概念) the simple past tense the pres