9年级英语人教全一册 Unit 12 Life is full of the unexpected. 教案1

这是一份9年级英语人教全一册 Unit 12 Life is full of the unexpected. 教案1，共3页。
 学科英语年级/册九年级（下）教材版本人教版课题名称 Unit12 Life is full of the unexpected. 难点名称语法（过去完成时） 难点分析从知识角度分析为什么难 1.过去完成时构成：had＋过去分词2.用法：过去完成时可以表示过去某一时刻或某一动作之前完成的动作或呈现的状态。也就是说发生在“过去的过去”。  从学生角度分析为什么难做题时，以过去的时间状语作前提，才能使用过去完成时构成：had＋过去分词，这一点学生容易忽略。动词的过去分词也是一个薄弱环节。难点教学方法 通过大量例子让学生了解过去完成时构成和用法。回顾规则和不规则动词的过去式，过去分词，找到一些普遍的规律。过去完成时连用的时间状语。4.过去完成时态的用法. 教学环节教学过程导入1.过去完成时的概念，你想到了吗？（过去的过去。）2.思考：过去完成时过去完成时的句子结构？知识讲解（难点突破）1.通过大量例子让学生了解过去完成时构成和用法。By the time I got up, my brother had gotten in the shower。By the time I__________, the bus  ____ already_____.By the time I___________, I realized I ________ my backpack at home. 2.过去完成时构成：had＋过去分词用法：过去完成时可以表示过去某一时刻或某一动作之前完成的动作或呈现的状态。也就是说发生在“过去的过去”。 3.回顾规则和不规则动词的过去式，过去分词，找到一些普遍的规律。 4.通过观察实例，发现要用过去完成时态的前提：有表示过去时间的状语。（1）. I had finished reading the novel by nine o’clock last night.（2）. We had learned over two thousand English words by the end of last term.（3）. They had planted six hundred trees before last Wednesday. 5.过去完成时态的用法：(1)表示过去的过去，通常由when或by引导的短语或者从句作时间状语或时间状语从句① By the end of last year, I had learned about one thousand English words.② By the time he was twenty, he had won about ten medals.③ When I got there, they had already left.(2)常用在宾语从句中① He told me he had already finished his homework.② I realized he had fooled me again.(3)体现在上下文中 I didn’t go to the movies yesterday because I had seen it twice.     课堂练习（难点巩固）1.课堂练习：Make a sentence with Past Perfect Tense.2.总结：由when, by the time, before等引导时间状语从句时，若描述发生在过去的事，主句常用过去完成时(had + 过去分词)表示动作发生在过去的过去。3.Fill in the blanks with the correct forms of the words in the box.小结1.以过去的时间状语作前提，才能使用过去完成时构成：had＋过去分词。2.要牢记动词的过去分词。