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

Discover Useful Structure: 过去完成时态 Food and Culture Unit 3 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 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. I had finished my work before I went out to play football. He told me a story that I had heard many times. I arrived at the station and found that the train had gone. Read the following sentences and pay attention to the words in red and pink. 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 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? — Yes, I had. / No, I hadn't. (4)特殊疑问句：特殊疑问词或词组＋had＋主语＋ 过去分词＋其他？ Where had you been before you came here? (5)被动语态：主语＋had (not)＋been＋动词过去分词 ＋其他。 By the end of last year all the preparatory work had been done. 三、过去完成被动时基本用法 1. 表示过去某一时间或某一动作前已发生且已完成的动作或状态。如： The work had been finished by us by nine o ’clock yesterday. Grace realized a mistake had been made by her. The project had been completed by the end of 1999. 2．叙述过去发生的事情，在已叙述了过去发生的事 情后，反过来追述或补述以前发生的动作时，常 使用过去完成时。 Mr.Smith died yesterday. He had been a good friend of mine. 3. 在含有定语从句的主从复合句中，如果叙述过去的 事，先发生的动作常用过去完成时。 I returned the book that I had borrowed. 4.过去完成时常常用在told，said，knew，heard， thought等动词后的宾语从句(或间接引语)中，这 时从句中的动作发生在主句表示的过去的动作之前。 He said that he had