Unit 12 第3课时 Section A Grammar Focus－4b-（教学课件）2022春【鸿鹄志·名师测控】九年级下册初三英语（人教版）

人教版·九年级下册 英语 Unit 12　Life is full of the unexpected. Section A Grammar Focus－4c 情景导入 Teacher：It seems that everyone is busy in the morning.We never have enough time on school mornings. What do you usually do in the morning? Students： ①I put on my clothes and get up. ②I brush my teeth，wash my face and so on. … 生成新知 When I got to school, I realized that I had left my backpack at home. By the time I got 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. Grammar Focus 过去完成时 (1)用法： 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) (2) 构成： 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 Language points (3) 标志词： 表示过去某一时间发生的动作用by the time, before, when引导时间状语从句；by the end of 接短语 表示过去的过去发生的动作常与already, since+点时间，for + 段时间连用。 (4) 口诀： 有两个动作发生在过去，一个先发生， 一个后发生，先发生的用过完，后发生的用过去。 过去完成时动词表示过去某一时间或某一动作之前完成的动作或状态。强调过去某一动作发生在另一动作之前时。 他说他以前见过你。 He said that he _________ (see) you before. had seen 过去完成时的具体用法 2.过去完成时词可以表示过去某一时刻之前发生的动作或呈现的状态，这一动作一直持续或将继续下去。 到了六点钟为止，他们已经工作了八小时了。 By six o’clock they ____________ (work)for eight hours. 我到广州时，他在那里很长时间了。 When I came to GZ , he _____________(be) there for a long time. had worked had been 3.过去完成时和 already, just, ever, yet等连用表示过去的过去。 他告诉我说他们队已经赢了。 He told me that his team _______ already ________ (win). 她说她仍没去过长城。 She said that she _______________(not go to) the Great Wall yet. had won hadn’t been to 1.一般过去时表示在过去某时发生的动作或存在的状态。 例：We started to learn English 5 years ago. 我们五年前开始学英语。 一般过去时、现在完成时与过去完成时 5 years ago now 2. 现在完成时表示的动作发生在过去，但侧重对现在产生的 结果或造成的影响，与现在有关。 其结构为：“助动词 have（has）+过去分词” 。 例：We have learned English for 5 years. 我们已经学了五年的英语了。 5 years ago have learned now 3. 过去完成时表示在过去某个时间或动作之前 已经发生或 完成了的动作或存在的状态， 即 “过去的过去（ past-in-the-past ）”。 例：We had learned English for 4 years by last year.