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,Unit 12,Section A (3a-Grammar Focus),Life is full of the unexpected.,3a,Read the passage on Page 91.,3a,Answer the questions.,Which two events dos the writer mention? How did the writer end up missing both events?,3b,3c,New Words,block n. 街区 worker n. 工作者；工人 above prep. 在上面 adv. 在上面 burn v.着火；燃烧 alive adj. 活着；有生气的 airport n. 机场 till prep. & conj. 到；直到 west adv. 向西；朝西 adj. 向西的；西部的 n. 西；西方,Task: 请写出下面动词的过去式和过去分词,ring rang rung get got gotten go went gone leave left left start started started be was/were been take took taken run ran run wake woke woken,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.,The Past Perfect Tense过去完成时,过去完成时的构成 助动词 had (用于各种人称和数) + 过去分词,When I got to school, the bell had rung.,2. 过去完成时的用法: 主要是表示在过去某个时间,或是动作之前 已经发生或完成的动作.也就是过去的过去.,3. 常用的几种方式: 用介词by, before 等构成的时间短语.,We had learnt 20 English songs by the end of last month.,The Past Perfect Tense过去完成时,用连词：when, before, after或者短语：by the time 引导的时间状语从句。,The plane had taken off when I reached the airport. By the time I got up , my brother had left home.,The Past Perfect Tense过去完成时,By the time I got outside, the bus had already left.,the policeman get to the shop,Tom run away,By the time the policeman got to the shop, Tom had run away.,Speaking-freely : By the time or When,Liu Mei wake up,the concert be over,By the time Liu Mei woke up, the concert had been over.,his grandma come from America,Li Ming grow up,By the time his grandma came from America, Li Ming had grown up.,He played basketball . When he was a kid.,When he was a kid,he had played basketball.,1. We _ (learn) two thousands words by the end of last year.,Can you do it?,3. When we _ (arrive) at the station, they _(wait) for more than twenty minutes.,had learned,arrived,had waited,2. I _ (know)him when I was a student.,had known,4. One of the men couldnt move, because he _ (break) his legs.,had broken,Challenge yourself,1. I _ up late this morning? (醒来) 2. Have you ever _? (睡过头) 3. After I got to the cinema, the film _already. (开始) 4. He _ (完成) his homework before I came here. 5. By the end of last year, she_ (学) to swim for 3 years.,一、Fill in the blanks.,二、中考链接,1. -Why dont you have a notebook with you? -Ive _ it at home A. lost B. forgotten C. left D. found 2. When my mum _ ,she realized she had left her bag on the bus. A. got on a bus B. got home C. got along D. got in the way 3. The students _ busily when Mrs. White went to get a book she _ in the classroom. A. had written , left B. were writing , has left C. had written , had left D. were writing , had left,Thanks! Goodbye!,
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