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人教版九年级英语全册Unit 6 When was it invented?(第3课时)学案

Unit 6 When was it invented?(第 3 课时)
【学习目标】 1.知识和技能目标:
1)谈论重要发明的发明时间,发明者和用途。 2) 了解薯条、茶和篮球的发明历史。 2.过程与方法目标: 1)能运用所学知识练习被动语态的句式。 2)能用所学句型进行交际练习。 3.情感、态度和价值观目标: 充满想象力,善于观察事物,面对难题,用积极的态度解决,发挥创造能力,认识世界, 改变世界。 【自主梳理】1. 要求学生翻开课本 P45,迅速阅读 1a-1e 部分的内容。 并按要求完成课本上相应的任务.
2. 检查答案,先要求全班一起给出答案并检查讨论。 【重点领悟】通过谈论薯条的发明,充分掌握被动语态的用法. 【探究提升】初中被动语态语法讲解
(一) 语 态 分 类 英语动词有两种语态.,主动语态和被动语态。主动语态表示主语是动作的执行者,被动语 态表示主语是动作的承受者。如:
They will build a new bridge over the river. (主动) A new bridge will be built over the river. (被动) 汉语中常用“被”、“给”、“由”、“受”等词用来表示被动,而英语用: 助动词 be + 及物动词的过去分词构成。 (二) 被动语态的时态、人称和数的变化主要体现在 be 的变化上,其形式与系动词 be 的变 化形式完全一样。 一般现在时:am / is / are + done 一般过去时:was / were + done 一般将来时:shall / will + be done 一般过去将来时:should / would + be done 现在进行时:am / is / are + being + done 过去进行时:was / were + being + done 现在完成时:have / has + been + done 过去完成时:had + been + done 将来完成时:shall / will + have been + done 过去将来完成时:should / would + have been + done [注]被动语态没有将来进行时和过去将来进行时。
【学法引领】完成一个任务:
An interesting story for you The history of potato chips Did you know that potato chips were invented __________ invented by mistake? Potato chips were ____________by a chef called George Crum. They were invented 1853 in ______.George Crum cooked them for a were crispy long time until they __________.And he sprinkled really salty lots of salt on them so they were __________.

说明:通过完成一个任务.让学生运用所学内容,既巩固了本课所学的语言目标,又开拓了 学生的思维,使学生的思维跳出了课本,培养学生在实际生活中运用本课所学内容,来解决 现实生活中的实际问题的能力,真正达到了新课标提出的培养学生综合运用语言的能力。
【巩固训练】
一、根据句意用本单元的词的适当形式填空 1.一 Do you know when the computer was i__________?
一 In 1976. 2.I don’t know if shoes with a________ heels are comfortable to wear. 3.Food cooked in the m__________ oven is not crispy enough. 4.She tasted the soup and added more salt because it wasn’t s_______ enough. 5.Did you know potato chips were invented by m__________? 6.Last Sunday.I met a friend whom I hadn’t seen for years by a_________. 7.一 Where was the bike p_________? 一 In Tianjin. 8.The new tea produces a p__________ smell.Would you like to drink some? 9.Remember to pack a c_________ if you want to take pictures there. 【学习反思】本课主要话题是谈论薯条的发明历史。主要练习被动语态的句式用法。通过课 前预习,可以增强课堂教学效果。


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