Unit 3 Food and Culture Discovering useful structures过去完成时及其被动语态课件 -2023-2024学年人教版高中英语选择性必修第二册

UNIT 3 FOOD AND CULTURE Discover Useful Structures 过去完成时 1 Teaching objectives: In this class, you will recognize and summarize the meaning, form and use of the past perfect tense and the past perfect passive voice; use the past perfect tense and the past perfect passive voice to describe a situation that happened in the past. 2 Q1：什么是过去完成时？ 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 基本定义： 过去完成时是表示过去某个时间之前已经发生的动作或一直延续的动作或状态。→“过去的过去” 理解“过去的过去” ： 过去 过去的过去 现在 例：The film had begun before we got to the cinema. 我到达电影院之前电影已经开始了。 先发生的动作用过去完成时，后发生的动作用一般过去时。 had begun got Q2：过去完成时的结构？ ① Tom had finished (finish) writing his novel ② I had eaten (eat) lots of cakes till then. 1. 肯定式： 主语+had+ done 2. 否定式： 主语+had + not + done ① Tom had not eaten his supper in the canteen before he went back home. ② When the police arrived, the thieves had not run (run) away. 3. 一般疑问式： ① Had you spent all of your money? ② Had he finished his homework by the time you got here? Had + 主语 + done +其他？ 4. 特殊疑问式： ① Why had The Castle become a memory of generation? ② How much of your money had you spent？ ③ What had you bought? ④Whose book had you borrowed? ⑤Who has been invited? 疑问词 + had + 主语 + done +其他？ By the time I walked into class, the teacher had started teaching already. By the time I walked into class, the teacher hadn’t started teaching yet. Had the teacher started teaching yet by the time you walked into class? Q2：过去完成时的结构？Practice: 否定句： 一般疑问句： 5.过去完成时的被动语态 ： The chef had set up a farm-to-table restaurant before his new cookbook was published. A new farm-to-table restaurant had been set up by the chef before his new cookbook was published. Had + been + done They had finished their dinner by the time Sam joined them. Their dinner had been finished by the time Sam joined them. Change the active voice into passive voice. 肯定结构 had＋been done 否定结构 had＋not＋been done 一般疑问结构 had＋主语＋been done 特殊疑问结构 特殊疑问词＋h