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课件网) The Past Perfect Tense 过去完成时 Unit 12 Life is full of the unexpected. Grammar 1. To learn to understand the use of Past perfect tense 2. To be able to write sentences using by the time or before 3.To understand the differences between the Present and Past perfect tense Learning Objectives When she got up , her brother had already gotten in the shower. Mary had a terrible morning yesterday . Revision now got up had already gotten in the shower When she got outside, the bus had already left. now got outside had already left had left my keys at home got to school By the time she got to school, she realized she had left her keys at home. now 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 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 _____ _____ _____. got to had already left 表示动作发生在过去的过去 ◆ 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. 过去完成时： 构成： 概念： had + 动词的过去分词 表示在过去的某一时间或动作之前已经发生或完成了的动作。即：过去的过去。 时间： 用法1： 1. 她到家之前她的孩子已经睡着了。 When she got home her children _____(sleep). had slept 2. 在他们到达之前电影已经开始了。 Before they arrived here the film _____ already _____ (start). had started 3. 她出去之前公共汽车就已经离开了。 had already left By the time she got outside, the bus_____. 过去完成时一般与before, after, when，by the time, till/ until 等引导的时间状语从句连用，从句用一般过去时。 1. 他说他以前见过你。 He said that he _____(see) you before. had seen 3. 他告诉我说他们队已经赢了。 He told me that his team _____already _____ (win). 4. 她说她仍没去过长城。 She said that she _____( be to) the Great Wall yet. had won hadn't been to 2. Tom说他借了这本书两周了。 Tom said he the book for 2 weeks. had kept 用法2：在told, said, knew, heard, thought等动词引导的宾语从句中，一般用过去完成时。 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. 3. The teacher collected the math homework. I got to school. _____ _____ By the time I got to school, the teacher had collected the math homework. By the time Mary got up, Tim had already gone into the bathroom. 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 ... ...
