人教新目标 (Go for it) 版九年级全册Unit 6 When was it invented?综合与测试第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。