九年级英语《When was it invented?》课件
一、教学目标：
1. 语言知识目标：
1) 能掌握以下单词： heel, scoop, electricity, style, project, pleasure, zipper, daily, website, pioneer, list, mention
能掌握以下句型：
① —When was the telephone invented?
—I think it was invented in 1876.
② —What are they used for?
—They are used for seeing at night.
2) 能谈论物品被发明的时间、发明者，表达某发明的用途。
2. 情感态度价值观目标：
了解一些近现代发明的时间及用途，激发自己热爱发明的情感。培养想象力，善于观察事物。面对难题，用积极的态度去解决，发挥想象力，认识世界，改造世界。
二、教学重难点
1. 教学重点：
1) 本课时的'单词、词组和句型，学习运用一般过去时态的被动语态。
2) 学会询问发明时间及用途的基本句型：
—When was the telephone invented?
—I think it was invented in 1876.
—What are they used for?
—They are used for seeing at night.
2. 教学难点：
运用一般过去时态的被动语态来讨论发明的发明时间及用途。
三、教学过程
I. Warming up
1. 展示一些近代发明的图片与近代发明的发明者，让学生们将图片与发明者相连。
T: Do you know what these inventions are?
S1: It’s a car.
S2: It’s a telephone.
S3: It’s a television.
T: Do you know who these inventors are?
S1: Karl Benz
S2: Alexander Bell
S3: J. L. Baird
Let Ss match the inventions and the inventors.
Ⅱ. Presentation
引导学生们学习一般过去时态的被动语态结构。
让学生们看大屏幕的如果爱和发明者的图片,并将句子改为被动语态。
如：
T: Karl Benz invented the first car in 1885.
The first car was invented (by Karl Benz) in 1885.
Ⅲ. Talking
1. Look at the pictures in 1a. Discuss with your group, in what order do you think they were invented? Try to number them [1-4].
2. Ss discuss with their partners and number the pictures.
3. Talking about the inventions:
A: I think the TV was invented before the car.
B: Well, I think the TV was invented after the TV.
Ⅳ. Listening (1b)
1. T: Tell Ss look at the pictures and years on the left.
2. Play the recording for the Ss to listen.
3. Ss listen to the conversation and try to match the invention with the proper year.
4. Play the recording again.
5. Check the answers.
Ⅴ. Pair work (1c)
1. Ss try to remember the invention and the year.
2. Student B, cover the dates. Student A, ask Student B when the things in the picture in 1b were invented. Then change roles and practice again.
3. Let some pairs ask and answer in pairs.
e.g. A: When was the telephone invented?
B: I think it was invented in 1876.
…
Ⅵ. Learning the new words & Listening
Look at the pictures then learn the new words.
Work on 2a:
T: Tell Ss they will hear some interesting inventions.
1. Look at the pictures in 2a. Discuss the things what they are used for.
2. Play the recording for the Ss to listen and number the pictures.
3. Play the recording again to check the answers.
Work on 2b:
1. Let Ss read the chart below. Explain some main sentences for the Ss. Make sure they know what to do.
2. Play the recording for the Ss to fill in the blanks.
3. Play the recording again to check the answers.
4. Listen again and fill in the blanks.
Ⅶ. Pair work (2c)
1. Tell Ss to make conversations using the information in 2b. Make a model for the Ss.
A: What are the shoes with special heels used for?
B: They are used for changing the style of the shoes.
2. Let some Ss make conversations using the information in 2b.
3. See which group does the best.
Ⅷ. Role-play(2d)
1. Read the conversations and Let Ss read after the teacher.
2. Explain some new words and main points in the conversation.
3. Ask Ss to role-play the conversation in groups.
X. Language points
1. Well, you do seem to have a point…
have a point 有道理
e.g. I admit (that) you have a point. 我承认你有理。
2. They are used for seeing in the dark.
be used for doing sth.表示“被用来 做某事”。 相当于be used to do sth.
e.g. This computer is used to control all the machines.
这台电脑是用来控制所有机器的。
Do you know what this tool is used for?
你知道这工具是用于做什么的？
3. Think about how often it’s used in our daily lives.
think about 表示“考虑，想起”
e.g. He is thinking about travelling in the summer holidays.
他正在考虑暑假旅游的事。
She was thinking about her childhood days.
她正回想她的童年时期。
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