新目标九年级英语Unit 9 When was it invented?第二课时教案

　　熟练掌握被动语态用法，学会用被动语态表达对创造和发明事物的认识和看法。

　　教学过程(本文来自优秀教育资源网淘.教.案.网)

　　一、复习

　　通过图片展示出以下句型及一些发明物for example：computer，telephone，car，TV，calculator…

　　组织同学应用以下句型进行对话，并把句型写在黑板上

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　　二、教学helpful，annoying   

　　Ask students to give some examples to show what each word means．

　　For example：

　　A vacuum cleaner is helpful． 

　　A very loud truck is annoying．

　　确信学生知道helpful，annoying的含义。

　　三、教学 3a．  

　　1. 首先，老师利用图片，呈现alarm clock，light bulb，microwave oven的画面．Then ask the students the following questions．

　　通过此方法让学生表达对创造和发明事物的认识和看法。

　　注：让学生根据自己写出的五个helpful inventions和五个annoying inventions与同伴进行俩俩对话．

　　2. Then ask the students to make a list of five helpful inventions and five annoying inventions on their own．Give the class about five minutes to do this．(接着要求学生写出五个helpful inventions和五个annoying inventions，五分钟完成。)

　　注：当学生做时，教师应全班移动来帮助学生。完毕，四人一组互相分享答案。最后，要求一些学生读出他们的答案，并且解释为什么。  

　　四、教学3b．

　　Ask the students to work in pair the following talk using the target language．(叫学生

　　用语言目标进行俩俩对话。)

　　让学生根据自己写出的五个helpful inv

entions和五个annoying inventions应用以下句型与同伴进行俩俩对话。教师将应用句型写在黑板上。

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　　说明：此活动用目标语言为学生提供听说练习。同时进一步让学生表达自己对创造和发明事物的认识和看法。

　　五、教学巩固

　　完成一个任务：Group work

　　Imagine that you are alone on a tiny island．Choose five inventions you would like to

　　have on the island with you．Tell the group what you chose and why．

　　Maybe you can use the following drills：

　　I’d like to have a…because I could…

　　It’s used for…

　　I think the most helpful invention is．．．    ．

　　But that’s not going to help you leave the island．I think it would be better to leave…

　　说明：通过来完成一个任务．让学生运用所学内容，既复习第一课时所学的语言目标和巩固了本课所学的语言目标，又开拓了学生的思维，培养了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。

　　六、作业

　　1．句型转换。 

　　(1)She was seen to come out of the library by him．(变为主动语态)

　　He ________ ________ ________ out of the library．

　　(2)When are trees often planted?(变为主动语态)

　　When ________ people often ________ ________?

　　(3)The League was founded in Guangzhou in 1922．(就画线部分提问)

　　________ ________ ________ ________ the League ________ ?

　　(4)Did the students wear the school clothes a lot?(变为被动语态)

　　  ________ the school clothes ________ a lot?

　　(5)Kate took good care of the baby yesterday evening．(变为被动语态)

　　  The baby ________ ________ well by Kate yesterday evening．

　　(6)His aunt bought him a bicycle．(变为被动语态)

　　  A bicycle ________ ________ him by his aunt．

　　2．汉译英。    ．

　　(1)计算机是何时发明的?_______________________________________

　　(2)谁发明了计算机? _______________________________________

　　(3)计算机是用来做什么? _______________________________________

　　(4)你认为什么是最有用的发明? _______________________________________

　　(5)它能够给人们更多时间工作和玩。_______________________________________