Unit 12 Section A 1a-1c课件2022-2023学年人教版英语九年级全一册

Grade 9 Unit 12 Life is full of the unexpected. Section A 1a-1c unexpected adj. by the time... backpack n. oversleep v. (overslept,overslept) give...a lift 出乎意料的；始料不及的 在......以前 背包；旅行包 睡过头；睡得太久 捎......一程 Warming-up Watch the video and talk What happened to the woman? A van(面包车) hit the woman while she was crossing a road. Watch the video and talk What happened? The glass door suddenly broke when the fast mail boy came in. Leading-in Life is full of the unexpected. Watch the video and talk What happened to the man? He suddenly fell down as soon as he had entered the door. Leading-in 两个红色动词所表达动作发生时间先后顺序是怎样的？ had entered是什么时态？ Eplaination Past Perfect Tense (过去完成时) 3. 否定句构成：主语 + had not (= hadn’t) + 过去分词 + ... 一、基本句式构成 4. 疑问式构成： Had + 主语 + 过去分词 + ...？ Yes, 主语 had. / No, 主语 hadn’t. 2. 肯定句构成：主语 + had + 过去分词 + ... 1. 基本构成：“助动词had(用于各种人称和数) + 过去分词” Eplaination Past Perfect Tense (过去完成时) 二、基本用法 When I woke up , it had already stopped raining. Tom said that he had borrowed two storybooks from the library. 基本用法1：表示在过去某一时刻或动作以前完成了的动作。可以用by，before等介词短语或时间状语从句来表示，也可通过上下文来暗示。 I had finished writing 11 units by yesterday. Eplaination Past Perfect Tense (过去完成时) I had taught English for about thirty years before coming to Dazhuang High School. 二、基本用法 基本用法2：表示由过去的某一时刻开始，一直延续到过去另一时间的动作或状态，常和for，since构成的时间状语连用。 用括号内单词正确形式填空： 1. We ____________ ( learn ) 800 English words since we came to this school. The teacher said we _____________ ( learn ) 800 English words since then. We _________ ( learn ) 800 words last term. We ____________ ( learn ) 800 words by the end of last term. 2. He _________ ( have ) a meeting next week. He _______ ( have ) a meeting two weeks ago. He told me he __________ ( have ) a meeting two weeks before. have learned had learned learned had learned Practice had had had will have Practice had gotten had left had left Listening by the time 意为“在……以前”，常引导表示过去的时间状语从句，主句常用过去完成时，即had+动词过去分词。