人教版高中英语选择性必修第二册UNIT 3 FOOD AND CULTURE Section Ⅲ Learning About Language课件（共35张）

(课件网) UNIT 3　FOOD AND CULTURE Section Ⅲ　Learning About Language 任务1　讲细·语法知识点 语法项目———过去完成时和过去完成时的被动语态 [初识语法·整体感悟] 一、从宏观建立思维导图 二、在课文句子中体悟 观察下面的句子，并感知过去完成时及其被动语态的用法。 1. When my family and I had just arrived in China， we went looking for a good place to eat in Beijing. 2. 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. 3. A Sichuan restaurant had been recommended to us by a friend， and finally， we found it. 4. 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. [慧学语法·演绎融通] 一、过去完成时的用法 1. 过去完成时表示在过去某一时刻或某一动作之前发生的动作或状态，句中常用 by， before， until， when 等词引导时间状语。 ①We had built five new buildings by the end of last year. 到去年年底，我们已经建了五幢新大楼。 ②The letter had passed from one to another until everyone read it. 这封信从一个人传到另一个人，直到每个人都看完。 2. hope， expect， mean， intend， want， suppose的过去完成时表示过去未曾实现的 愿望或意图。 We had wanted to help you， but we were too busy to get away.（但未能如愿） 我们本来想帮助你的，但忙得脱不开身。 3. 一些固定句型中 （1）在“hardly/scarcely/barely...when...”和“no sooner... than...”句型中， when和than从句中用一般过去时，主句用过去完成时，当否定副词放在句首且用倒装 时，表示“刚刚……就……”。 （新高考Ⅰ卷）No sooner had the starter’s gun shot than David tottered forward with the other kids. 发令员的枪一响，大卫就和其他孩子一起，蹒跚着向前走。 （2）在“It was the first/second/...time that...”中，that从句的谓语动词使用过去完 成时。 It was the first time that we had been introduced at the conference. 这是我们第一次在会议上被别人介绍。 （3）在“主语＋was/were＋the＋最高级＋名词＋定语从句”中，从句的谓语动词常 常使用过去完成时。 It was the best book I had ever read. 这是我读过的最好的一本书。 名师点津 过去完成时的常用标志词和句型： by＋过去的时间点， before， until， hardly/scarcely... when...， no sooner... than...， It was the first/second/... time that... （that从句中用过去完成时） 二、过去完成时的构成 1. 肯定句：主语＋had＋过去分词＋其他 The Union sent letters to the embassy to cheer on the Chinese people who had fought against the epidemic. 工会致函大使馆，为抗击疫情的中国人民加油。 2. 否定句：主语＋had＋not＋过去分词＋其他 The country had not yet recovered from the effects of the war. 这个国家还没有从战争的影响中恢复过来。 3. 疑问句：Had＋主语＋过去分词＋其他？ 疑问词＋had＋主语＋过去分词＋其他？ How many new words had you learned before the foreign teacher came to your school？ 在外教来你们学校之前，你们学了多少个新单词？ 三、过去完成时的被动语态的构成 1. 肯定句：主语＋had been done＋其他 By the time he got to the school， the first period had been finished ... ...