Unit 3 Learning about language 语法课件-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 Discover useful structures 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 Sense the usage of the past perfect tense Part.1 Definition 一、什么是过去完成时？ 表示过去某一时间或动作之前发生的动作或状态，以及对过去的某一点造成的某种影响或是结果。 例： 1. By nine o'clock last night, we had got 200 pictures from the spaceship. 2. All the tickets had been sold out when they arrived. present future past past perfect past perfect tense 过去完成时结构：had (not)+done 意义： 过去完成时：表示过去某一时间或某一动作之前发生且已经完成的动作或状态。 主动语态构成: 被动语态构成: had done had been done ①When my family and I had just arrived in China, we went looking for a good place to eat in Beijing. ②A Sichuan restaurant had been recommended to us by a friend, and finally, we found it. 观察下面句子，说出划线部分的结构类型及句中功能。 ①划线部分是____________________，arrive这个动作是发生在went这个动作之前，表示过去的过去。②划线部分是____________________，recommend这个动作是发生在found这个动作之前，而且是被动动作。 过去完成时的主动语态　 过去完成时的被动语态　 before(连词/介词) + 过去的时间点 “在...之前” by +过去的时间点 “到...为止” by the end of +过去的时间点 “到...为止” by the time +(一般过去时) “到...为止” 由时间状语来判定 I ________________(finish) reading the novel by nine O'clock last night. We ________________(learn) over two thousand English words by the end of last term. They ______________(plant) six hundred trees before last Wednesday. They ___________(leave) before we arrived at the school. Breakfast ___________________(serve) by the time I got up. Examples and Exercises had finished had learned had planted had left had been served Part.2 structure 二、过去完成时的构成 基本结构：had＋动词过去分词 (1)肯定句：主语＋had＋动词过去分词＋其他。 (2)否定句：主语＋had＋not＋动词过去分词＋其他。 He had already been to New York earlier in the week. 本周早些时候他去过纽约。 At that time we hadn't met her. 那时我们还没有见到她。 (3)疑问句：Had＋主语＋动词过去分词＋其他？ 肯定回答：Yes，主语＋had. 否定回答：No，主语＋hadn't. —Had you visited here before? ——你以前参观过这里吗？ —Yes，I had./No，I hadn't. ——是，