When was it invented教案,标签：初三英语教案,新目标九年级英语教案,http://www.77xue.com
    Ⅱ.Teaching Key Points
    1.Talk about the helpful inventions and annoying inventions.
    2.Guide the students to discuss their opinions on the inventions.
    Ⅲ.Teaching Difficult Points
    1.Discuss the opinions on the inventions.
    2.Use the target language to describe the inventions.
    Ⅳ.Teaching Methods
    1.Pairwork
    2.Groupwork
    Ⅴ.Teaching Aids
    Some pictures of the helpful inventions and annoying inventions.
  
【学习辅助材料】
PPT课件
Ⅵ.Teaching Procedures

【教学程序】
Teaching and learning steps Learning contents T’s  activities Ss’  activities Purpose Time
（1）
Revision
   （从有关发明的话题入手，增加学生学习的兴趣.）
 
 
 
 
 
 
 
 
 
 
 （PPT） T: What’s the invention? Who invented the inventions ? Can you tell me ?
T:The inventors are great.Are you great?
T: Let’s have a competition between two groups. Boys are Group 1, girls are Group 2. Let’s see which group will be the winner，OK?
1. Tell Ss the requirements .
T:First revise the passive voice.Look at the information and finish the blanks.
2. Ask two students to finish it.
3.T checks the answers.
( 老师奖励。)
4.Ask Ss to read the sentences after the teacher.  1.Students answers them.

2.Ss say yes.

3.Ss do it by themselves.
 
 

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4.Ss read them together. 上课初提出疑问，引出比赛要求和奖励办法，能让学生对学习充满积极性。

复习旧知，为接下来学习新知做铺垫。这一过程不但可以很好地考查学生上节课所学知识，及时发现问题，查漏补缺。  5’

（2）Presentation

（2）Presentation

 
 
   Part 3a
Words:light bulb      microwave
oven
 (PPT)

 
 
  1. T: Look at the picture.What’s this?
2. T: And this?
 light bulb  (板书)
3. T: What’s this?
 microwave oven(板书)
4.T:The inventions can be divided into helpful  inventions and annoying inventions.I think the computer is a helpful invention.The gun is an annoying invention.  Which do you think are helpful inventions/annoying inventions?                1. Ss :闹钟。
 
 2.Ss:电灯泡。
 

3.Ss:微波炉。

4. Ss discuss the questions.

 通过图片呈现新单词，创设情境来引发讨论： Which do you think are helpful inventions/annoying inventions?引导学生学会发表自己的观点。
 
 
 
6’
 
（3）
Practice
 
 
 Part 3a.

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