教学目标：
1、 知识与能力目标
Knowledge target
Words: bicycle true
Sentences: He invented this bicycle in 1839.
Ability target:
Help the students to know some great inventions.
Help the students to learn the past tense.
2、 情感态度目标
Inspire the students to love our homeland . 通过学习中外的伟大发明，培养学生的爱国主义精神和民族自豪感。
教学重点：
To master the basic sentence “He invented this bicycle in 1839.”
To talk about what Chinese people invented and what English people invented.
教学难点：
To talk about what Chinese English American people didn't invent.
To use words and sentences in the past tense correctly.
课前准备：
VCD课件单词卡片
教学过程：
Step 1 Warm up
1、智慧树
课件出示大树图片，树上有单词，快速说出单词并说出单词的过去式。
（通过快速说单词环节，复习单词的过去式）
2、Chant
Invent invent invented
Chinese people invented paper.
Print print printed
I printed this newspaper.
学生在老师的指导下拍手读一读chant,对上节课内容的回顾，又有利于帮助学生进入状态学习新知识。
Step 2 Presentation and practice
㈠单词学习
1、bicycle
T: What did you do yesterday? S:……
T: I rode my bicycle yesterday. Look, this is my bicycle.课件出示一辆自行车和单词bicycle。学生跟读单词。
2、wheel
（老师出示两张图片，第一张是现在的自行车，第二张是世界上最初发明的自行车。）
T: Look at these two bicycles. Can you find the difficults between them?
S:老式自行车，一个轮子大，一个轮子小。
T: Yes, one wheel is very big, one is small.
老师用课件突出显示自行车轮子，并出示单词wheel。领读单词。
㈡课文学习
1、listen and answer my questions.
Who invented this bicycle?
Is he a Chinese?
When did he invented this bicycle?
通过让学生带着问题听录音，解决课文的主要问题。同时引出句型He invented this bicycle in 1839.
老师提出问题并播放录音，然后用课件呈现问题如下：
Who invented this bicycle?
Is he a Chinese?
When did he invented this bicycle?
He invented this bicycle in _______.
呈现重点句型He invented this bicycle in 1839.领读。
2、listen and repeat
跟读课文，老师注意强调语音和语调。
3、Read and complete the passage.
_____ _____this picture. It's a _____. Look at the man _____ the bicycle. He was _____. He _____ this bicycle in _____.
4、Practise
True or isn't true.（要求学生用手势来表示That's true. That isn't true.）理解true的意思
T: An American invented this bicycle, is that true?
S: No, that isn't true.边说边做手势。
T: You can say American didn't invented this bicycle