Unit 12 Section A (GF-4c)（讲解课件）-【优翼·学练优】2025-2026学年九年级英语下册同步备课（人教版）

该初中英语课件聚焦九年级下册Unit 12过去完成时，通过"到达派对""看电影忘喂狗"等日常情境例句导入，衔接一般过去时知识，搭建"过去的过去"概念支架，系统呈现语法结构、用法及与一般过去时的区别。 其亮点在于以语言能力培养为核心，通过4a造句练习、4c真实经历描述等分层任务，结合思维品质训练，引导学生对比分析时态差异。教师可借助清晰的语法讲解和多样化练习实施教学，学生能在语境中提升语法应用能力，培养主动学习习惯。

优翼英语教学课件（RJ） Go for it! 九年级（下） 1 Section A (GF-4c) Unit 12 Life is full of the unexpected. Learning Goals Key words & phrases: cream, workday, show up, bean, market, by the end of Key sentences: 1.By the time I arrived at the party, everyone else had already shown up. 2. When she arrived at the movie theater, she remembered she had forgotten to feed her dog. To learn the past perfect tense. Words & Expressions cream workday show up bean n. 奶油；乳脂 n. 工作日 感到；露面 n. 豆；豆荚 Words & Expressions market by the end of n.市场；集市 在（某个时间点）以前 Presentation Grammar Focus When I got to school, I realized that I had left my backpack at home. By the time I got back to school, the bell had rung. Before I got to the bus stop, the bus had already left. I was about to go up to my office when I decided to get a coffee first. As I was waiting in line with the other office workers, I heard a loud sound. 过去完成时：用来描述在过去某一时间或动作之前已经发生或完成了的动作。(过去的过去) 由“助动词had (用于各种人称和数) + 过去分词”构成。否定式：had not + 过去分词 。缩写形式：hadn’t + 过去分词 。 语法概述 Grammar 过去完成时的句式结构 (1) 肯定句：主语 + had + 过去分词 + 其他. (2) 否定句：主语 + hadn’t + 过去分词 + 其他. (3) 一般疑问句：Had+ 主语 + 过去分词 + 其他? 肯定回答：Yes, 主语 + had. 否定回答：No, 主语 + hadn’t. 过去完成时的用法 表示一个动作或状态在过去某一时间动作之前已经发生或完成，常与by、 before等构成的时间短语连用。 常用在said、told、knew、heard、realized等后面的宾语从句中。 (3) 在含有when、 before等引导的时间状语从句的复 合句中， 如果从句的时态为一般过去式，主句常用过去完成时。 (4) 过去完成时是一个相对的时态，只有和过去的某个时间或动作相比较时才会用到，因此可通过分析语境来确定时态。 过去完成时与一般过去时的区别 一般过去时表示过去某时间发生的动作或存在的状态，而过去完成时则表示过去某一时间以前（即过去的过去）发生的动作或存在的状态。 Practice 4a Make sentences using by the time or before. 1. Tim went into the bathroom. Mary got up. ____________________________________ ____________________________________ 2. The coffee became cold. I put cream in the coffee. __________________________________ __________________________________ Before I put cream in the coffee, the coffee had become cold. By the time Mary got up, Tim had already gone into the bathroom. 3. The teacher collected the math homework. I got to school. ________________________________________ ________________________________________ 4. I completed the work for my boss. The workday ended. ________________________________________ ________________________________________ By the time I got to school, the teacher had collected the math homework. I had completed the work for my boss before the workday ended. 5. The movie started. I arrived at the cinema. __________________________________ __________________________________ 6. My mother finished making the apple pie. I got home from my language course. ______________________________________ ______________________________________ ______________________________________ The movie had started before I arrived at the cinema. By the time I got home from my language course, my mother had finished making the apple pie. 4b Fill in the blanks with the correct forms of the words in the box. 1. By the time I arrived at the party, everyone else ____ already _________. 2. When he put the noodles into a bowl, he realized he ____________ to add the green beans. 3. By the time my mother came back from the market, I ______ already __________ of the door to go to my piano lesson. rush out forget arrive at go into show up find out had shown up had forgotten had rushed out 4. Before she got to the airport, she _____________ about the earthquake. 5. When she _________ the movie theater, she remembered she had forgotten to feed her dog. 6. Before she got a chance to say goodbye, he _____________ the building. arrived at had gone into had found out rush out forget arrive at go into show up find out 4c Write two true statements and one false statement about your day yesterday. Then ask your classmates to guess the false statement. By the time I left for school in the morning, _______________. By the end of the school day, ___________________________. By dinner time, I _____________________________________. Language points By the end of the school day, … (教材P92 4c) by the end of 在（某时间点）以前 by the end of 含有“不迟于”的意思。通常情况下，根据by the end of后接的时间的不同，主句选用相应的时态： (1) 接将来的时间，主句用一般将来时。 By the end of next month, I will go to Shanghai to attend a meeting. By the end of last month, I had read 3 books. (2) 接现在的时间，句子用现在完成时。 By now, we have learned 6 English songs. (3) 接过去的时间，句子用过去完成时。 By the end of last month, I had read 3 books. Exercises 单项选择 1. By the time I got to the cinema, the movie _______ for 10 minutes. A. has been on B. had been on C. had stopped D. had begun 2. Robert was very upset that most of his friends _______ when he ______ at the party. A. left; had arrived B. had left; arrived C. left; arrived D. had left; had arrived B B 3. She _______ her keys in her office so she had to wait until her husband ______ home. A. has left; comes B. had left; would come C. had left; came D. left; had come 4. She said she ________ the story already. A. has read B. read C. will read D. had read 5. They ______ 100 hundred trees by last weekend. A. planted B. have planted C. will have planted D. had planted C D D 句型转换 1.I had cooked the dinner when my parents came back. (改为否定句) I __________ _________ the dinner when my parents came back. 2.Mary’s brother went into the bathroom and then Mary got up. (改写句子) When Mary _____ ______ , her brother ____ ____ ___ the bathroom. 3.By the time she got up, her mother had gone to work. (对画线部分提问) ______ _____her mother done by the time she got up? hadn’t cooked had been in got up What had Homework Preview the new words and phrases in Section B (1a-1e). Do the exercises in students’ book. Thank you! 本文件著作权为创作公司所有, 仅限于教师教学及其他非商业性和非盈利性用途。如发现盗用、转卖、网络传播等侵权行为, 本公司将依法追究其相应法律责任。 部分素材选自网络, 如有争议, 请联系删改。 声 明 $