新概念3B-unit20-There27s-always-a-first-time---精品课件下载.ppt

新概念3B;Unit20 Theres always a first time ;doorbell ;answer;invite in ;reply;wedding ;home movie;fall asleep;单词记忆大比拼;睡着5;home movie 5;Listen to the recording and then answer the question:;Reading;The text;;I had just got home the other night , when my cousin rang the doorbell.;.;.;But I had just parked the car outside;.;I’m getting married in April. ;.;We had already had two cups of tea, when she said, “I’d like to have a film of my wedding.;.;找出文中含有过去完成时的句子;过去完成时;past perfect tense;过去完成时的主要用法　 过去完成时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或结束，即发生在“过去的过去”。如：我醒来时，雨已经停了。（主句的动作发生在“过去的过去”） When I woke up, it had stopped raining. ;　2. 过去完成时是一个相对的时态，表示的是“过去的过去”，只有和过去某一时间或某一动作相比较时才使用它。如： 他告诉我他写了一本新书。 　　He told me that he had written a new book. (had written 发生在 told 之前 ) ;3. 过去完成时需要与一个表示过去的时间状语连用，它不能离开过去时间而独立存在。此时多与 already, yet, still, just, before, never 等时间副词及 by, before, until 等引导的短语或从句连用。 Grace来中国前在一所学校教了五年英语。 Before she came to China, Grace had taught English in a school for about five years. Peter十岁时就已经收集了三百多张中国邮票。 Peter had collected more than 300 Chinese stamps by the time he was ten. ;4. 过去完成时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时间，而且动作尚未结束，仍然有继续下去的可能。如： 到去年为止，他已经在这工厂工作二十年了。 By the end of last year, he had worked in the factory for twenty years. (had worked 已有了 20 年，还有继续进行下去的可能);过去完成时的判断依据: 1. 由时间状语来判定：一般说来，各种时态都有特定的时间状语。与过去完成时连用的时间状语有： (1) by + 过去的时间点。如： 昨天晚上九点前我已经读完这本小说了。 I had finished reading the novel by nine oclock last night. ;(2) by the end of + 过去的时间点。如： 截止到上学期末，我们已经学了两千多个英文单词了。 We had learned over two thousand English words by the end of last term. (3) before + 过去的时间点。如： 上周三以前他们已经中了六百棵树了。 They had planted six hundred trees before last Wednesday. ;2. 由“过去的过去”来判定：过去完成时表示“过去的过去”，是指过去某一动作之前已经发生或完成的动作，即动作有先后关系，动作在前的用过去完成时，在后的用一般过去时。这种用法常出现在： (1) 宾语从句中: 当宾语从句的主句为一般过去时，且从句的动作先于主句的动作时，从句要用过去完成时。在told, said, knew, heard, thought等动词后的宾语从句。如： 她说她以前看过这电影。She said that she had seen the film before. ;(2) 状语从句中: 在时间、条件、原因、方式等状语从句中，主、从句的动作发生有先后关系，动作在前的，要用过去完成时，动作在后的要用一般过去时。如： 当我到