人教版九年级全册When was it invented？SectionA Grammar focus 4a-4c 教案

Unit 6　When was it invented
Section A (Grammar Focus－4c)
学习目标
1. 掌握一般过去时态的被动语态的用法。
2. 会正确使用重点句型：
When was the TV invented
It was invented in 1927.
Who was it invented by
It was invented by Baird.
学习重点
1.一般过去时态的被动语态
学习难点
熟练掌握一般过去时态的被动语态
教学过程
Step 1　自主学习
Teacher：Read the sentences and pay attention to the underlined parts.
When was the car invented
It was invented in 1885.
Who were they invented by
They were invented by Julie Thompson.
What are they used for
They are used for seeing in the dark.
English is spoken all over the world.
环节说明：通过生生互动，总结学过的内容——被动语态，同时锻炼了学生的自学能力。
Step 2　归纳总结
Teacher：What have you found by reading the sentences above
Ss: 被动语态 (Passive Voice)
结构: be + 动词的过去分词
一般现在时的被动语态:
am / are / is +动词的过去分词
一般过去时的被动语态:
was / were +动词的过去分词
环节说明：通过观察，学生合作总结知识点，能更好地理解掌握本单元的重点语法。
Step 3　Practice and summary
环节说明：通过练习，学生合作总结，提高学生运用知识的能力。
Step 4 Pair work
A: When was … invented B: It was invented ….
A: Who was … invented by B: It was invented by …
环节说明：通过合作交流，提高学生口语表达的能力。
Step 5 Practice
小组合作完成Grammar Focus中句子填空 和4a 练习。
环节说明：通过练习，让学生熟能生巧，达到学以致用的目的。
Step 6 Group work
以小组形式完成4b, 4c，完成后小组内交流答案，教师点拨易错点
环节说明：通过小组合作，让学生在互帮互助的氛围中巩固掌握了本课的知识点。
Step 7 当堂检测
用所给动词的适当形式填空。
1. The pizza ______ (make) by me. Would you like to have some
2. The Great Wall ________ (know) all over the world.
3. This story ______ (tell) by my grandmother last night.
4. ____ a new science museum ______ (build) in your hometown last year
5. The movies _______ (see) by kids on weekends.
6. History _________ by the people. (make)
7. He is often _________ to do the work by the teacher. (ask)
8. The books _________________ by him last year. (write)
9. The trees ______________ every year. (plant)
10.The sports meeting ____________ (hold) next Monday.
完成后小组内交流答案，教师点拨易错点。
环节说明：通过本环节的练习，让学生复习掌握了一般现在时态和一般过去 时态的被动语态，并拓展了一般将来时态的被动语态.
Step 8 Play a game. Lucky number.
Step 9 Summary.