Unit 3 Discovering Useful Structures 过去完成时专题课件-2022-2023学年高中英语人教版（2019）选择性必修第二册

UNIT 3 FOOD AND CULTURE Discovering Useful Structures Learning Objectives 1. Understand the structure and meaning of past perfect tense; 2. Grasp the usages of past perfect tense; 3. Tell the differences between past tense and past perfect tense; (present perfect tense and past perfect tense); 4. Apply what you have learned into practice; 01 过去完成时定义 1.Prior to coming to China, my only experience with Chinese cooking was in America, with Chinese food that had been changed to suit American tastes. 2.When my family and I had just arrived in China, we went looking for a good place to eat in Beijing. 3.A Sichuan restaurant had been recommended to us by a friend, and finally, we found it. 4.Tired, hungry, and not knowing a word of Chinese, we had no idea how to order, so the chef just began filling our table with the best food we had ever eaten. 过去完成时 主动语态(句2、句4) had done 被动语态(句1、句3) had been done 1.过去完成时的定义 By the time the policeman got to the shop, the thief had run away. 警察到商店时,小偷已经逃跑了。 过去 现在 将来 1.过去完成时的定义 定义二:表示过去某一时间之前已经开始并一直持续到该时间的动作或状态。常与by/until/before/by the end of+表示过去的某一时间连用 It’s Sunday. He had been ill for a week when he was sent to hospital on Friday. 今天是星期天了。当他周五被送往医院就医时,他已经病了一个星期了。 1.过去完成时的定义 97546 (9) - e7d195523061f1c0f0ec610a92cff745ee13794c7b8d98f8E73673273C9E8BE17CC3D63B9B1D6426C348A354AD505654C28F453CD7C8F90EADD06C08281DAED7140E5AAAED5880ECE414DFB6A93B82BE019406867034C3A8500A4827DCF3FBF74A471B736410707E336A01C9ADC9BE02ACCB8DF2121D81636A067B8AE80C6AB6F014154F4E7B7247 过去完成时表示在过去某一时间或动作之前完成的动作。 定义 now A B 7 02 过去完成时结构 Active 主动 Passive 被动 The room looked nice. Somebody had cleaned it. The room looked nice. It had been cleaned. had done had been done 1. By the time the policeman got to the shop, the thief had run away. 2. Had the thief run away by the time the policeman got to the shop, 例句:我们到剧院时戏剧已经开始了。 The play _ when we got to the theater. had already started 过去完成时结构:肯/否定句:had (not) + done 一般疑问句:Had sb done sth? 2.过去完成时的结构 Had the play already started