Unit 12 Section A3 Grammar focus-4c课件-2024-2025学年人教版英语九年级全册

Unit 12 Life is full of the unexpected. Section A 3 Grammar focus-4c 4a Make sentences using by the time or before. 1. Tim went into the bathroom. Mary got up. By the time Mary got up, Tim had already gone into the bathroom. 2. The coffee became cold. I put cream (n. 奶油) in the coffee. _________________________________ _________________________________ Before I put cream in the coffee, the coffee had become cold. 3. The teacher collected the math homework. I got to school. __________________________________ __________________________________ 4. I completed the work for my boss. The workday (n. 工作日) 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 (n. 果馅派). 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 (n. 豆). rush out, forget, arrive at, go into, show up (赶到；露面), find out showed up had had forgotten 3. By the time my mother came back from the market (n. 市场), I ____ already __________ of the door to go to my piano lesson. 4. Before she got to the airport, she _________ ___ about the earthquake. had rushed out had found out rush out, forget, arrive at, go into, show up , find out 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 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. 1. By the time I left for school in the morning, __________________________________ __________________________________ __________________________________ I had already had breakfast. I had already had supper. I had already had my hair cut. 2. By the end of the school day, __________________________________ __________________________________ __________________________________ 3. By dinner time, I_________________________________ I_________________________________ I_________________________________ I have got a present from Tom. I had had these articles read. I had finished my homework. had had too many apples. had eaten plenty of meat. have had all the housework finished. 把下列短语翻译成英语。 1. 即将 2. 倒杯咖啡 3. 排队等候 4. 起床 5. 出去 be about to get a coffee wait in line get up get outside 6. 迟到 7. 到时候 8. 闹铃响 9. 开始做某事 10. 搭便车 be late for by the time go off start doing sth. give sb. a lift 1. To learn to understand the use of Past perfect tense 2. To be able to write sentences using by the time or before Learning Objectives What happened to you on a bad morning? First, I had slept when the clock went off. Then by the time I ate breakfast, I had hurt my hand with a knife. Before I went to school, I had gone to the doctor. What about your morning? I had forgotten to have breakfast before I going to the office this morning. 今天早晨去办公室之前，我忘记吃早饭了。 时态分析： “去办公室”是发生在过去的事情，而“忘记吃早饭”发生在“去办公室”之前，所以第二个谓语动作发生在第一个谓语之前，是“过去的过去”，要用过去完成时。 I had forgotten to have breakfast before I going to the office this morning. 今天早晨去办公室之前，我忘记吃早饭了。 表示过去某一时间或动作以前已经发生或完成了的动作。它表示动作发生的时间是“过去的过去”。 表示发生在过去的动作对过去的某一点造成的某种影响或结果，用来指定在另一个过去行动之前就已经完成了的一个事件。 过去完成时 e.g. By nine o’clock last night, we had got 200 pictures from the spaceship. I had been at the bus stop for 20 minutes when a bus finally came. He said he had worked in that factory since 1949. The train had left before Tina reached the station. 过去完成时的构成： 过去完成时的谓语由“助动词had+过去分词”构成。否定式为“had not+过去分词”，had not缩写为hadn't。 过去完成时的用法： 1)表示一个动作或状态在过去某一时间或动作之前已经完成，发生在“过去的过去”。这个过去的时间可以用by，before等介词短语或者一个时间状语从句来表示。 e.g. When I woke up，it had stopped raining. (翻译) 我醒来时，雨已经停了。 2) 表示某一动作或状态在过去某时之前已经开始，一直延续到这一过去的时间。常用表延续的时间状语如： by the end of+ 过去的时间点，by the time+从句等。 e.g. By the end of last year, she had worked in the factory for twenty years. (翻译) 到去年年底，她已经在这家工厂 工作20年了。 Finish the task 1. 过去完成时的构成：_____+___________ 2. 过去完成时表示： __________________________________ __________________________________ 3. 过去完成时常与______________________等引导的时间状语连用。 had 过去分词 when, before, by the time 过去某一时刻或动作之前已经发生或完成的动作。 1)当我到达学校的时候，我才意识到我把书包忘在家里了。 _______ I got to school, I realized that I ______ ______ my backpack at home. 2)到我返回学校的时候，铃声已经响过了。 _____ _____ _____ I got back to school, the bell ______ _______. When had left By the time had rung 根据汉语提示完成句子。 Grammar Focus 3)我到达公共汽车站之前， 汽车已经离开了。 Before I _____ _____ the bus stop, the bus ______ _______ _______. 4)我决定先买一杯咖啡，然后再去办公室。 I ______ ______ ______ go up to my office when I decided to get a coffee first. got to had already left was about to 5)就在我和别的工作人员一起排队等候的时候，听到了一个巨大的声响。 As I ______ _______ ______ ______ with the other office workers, I ______ _____ _____ ______. was waiting in line heard a loud sound ◆ 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. 由when, by the time, before等引导时间状语从句时，若描述发生在过去的事，主句常用过去完成时(had + 过去分词)表示动作发生在过去的过去。 ◆ 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. be about to do, be doing等表示即将或正在做某事时，常用when引导从句表示突然发生的动作。 现在完成时与过去完成时的区别： 现在完成时表示的动作发生在说话之前某 个没有明确说出的过去时间，侧重过去发 生的动作对现在产生的影响或造成的结 果，与现在有关； 过去完成时的动作发生在“过去的过去”， 它是一个相对的时态，不能离开过去的时 间而独立存在。 e.g. We have learned 1,000 English words so far. We had learned 1,000 English words by then. 1. Since we began to use the Internet, our lives _______ a lot. A. change                  B. had changed C. will change           D. have changed (2017 江西) 中考真题 2. My parents ________ to work by the time I ________ up.   (2016 四川巴中) A. began; get       B. had begun; had got  C. had begun; got    3. —What did the teacher say to you? —He asked me _______. A. why I look unhappy then                B. when did I go home last night C. how could I solve the problem        D. if I had got everything ready   (2016 湖北武汉) 4. By the time I got back to school, the bell ______. (2015黑龙江龙东) A. rang B. has rung C. had rung 5. —Look at the blue sky! The rain ________. —Let’s go out for a walk.   (2015 江苏泰州) A. stops                       B. will stop　 C. has stopped　　    D. had stopped 句型 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. show up  by the end of  露面；赶到 在(某时间点)以前 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. Exercises Ⅰ. 完成句子 1. By the time I joined Greener Group, they ____________________________ __________________________ (义务打扫图书馆) for 2 years. (volunteer)                                        (2017 湖北襄阳) had volunteered to clean (up) the library / libraries 2. Molly was excited to know that she ______________________(通过了面试) and had been offered a job in the company. 3. Though Lucy _____________________ _______________ (已经看过几次医生了), her knee is still painful. has seen the doctor several times had passed the interview Ⅱ. 根据短文内容及提示，用正确的时态或语态补全短文，使短文完整、通顺。 A cow and a fox went out to search for food together. They (1)_________(go) only a few miles before they saw a lion coming their way. They were both very scared. The fox thought of a way to save his own life, and went up to the lion and said in his ear, “I (2)_________(help) you catch the cow without the trouble of hunting (猎杀) him, had gone will help if you let me go free.” The lion agreed, and the fox then led the cow to a hidden pit (深坑), which some hunters (3)_________(dig) as a trap (陷阱) for wild animals, and the cow fell into it. When the lion saw that the cow (4)_______________(catch) and couldn't get away, he turned his attention to the fox. He soon killed him, and then went on to eat the cow. Betray (背叛) a friend, and you'll often find you have ruined (毁灭) yourself. had dug had been caught 1. 复习Grammar Focus 中的内容。 Try to make sentences with before, by the time and be doing … when, and make use of the past perfect tense. 2. Preview 1a-2a on page 93. $$