1、Unit4 When was it invented?Teaching aims: 1学会使用含有被动语态的不同句型结构“When was it invented?” 和“Who was it invented by?”来谈论各种发明物的历史。 2. 能用被动语态正确表达发明物的历史。如：It was invented in 1876. It was invented by Bell.3. 通过了解一些中外发明者的事迹，培养勤奋学习、立志为社会多做贡献的精神。Teaching important points: 1. When was / were invented? It was / The
2、y were invented in Who was / were invented by? It was / They were invented by 2. topic: Inventions.Teaching aids: multi-media, a recorderStep I: GreetingsT: Good morning, class! Ss: Good morning, Mr Luo. T: Who is on duty today? Ss: Yes, I am. Step II: Lead-inT: Good morning, boys and girls. Today w
3、e will a new unit about inventions. You can see inventions all around us, from TV to car, from food to clothing. We should say nobody can live without them. Dont you think so? Can you imagine one day without inventions?Ss: Thats impossible.T: Yes, we live in a world of inventions. These inventions m
4、ake our life easier and more comfortable. In this unit, we will learn some inventions and their history. First, say the ancient China was very great in the world. It was famous for the four great inventions. Do you know the famous inventions in the ancient China? Guess Ss to talk about it. Show four
5、 great inventions pictures to Ss. Second, Do you know Edison? Do you know what Edison was invented in his life? Get Ss to talk about Edisons inventions.Step III: ListeningDo you know the modern inventions in the world? They have changed our life more. Get Ss to guess what they are. Show some modern
6、inventions pictures to Ss.Get Ss to listen to the tape, and number from one to five(Which kind of invention is in front, which kind of invention is in after).Get Ss to listen to the tape again. Listen and match the inventions with the dates.Step IV: Practice the conversations.Practice 1: Get Ss to p
7、ractice this conversation. And ask some students to practice in class.- When was the phone invented? - I think it was invented in 1876. Practice 2: Show another modern inventions to Ss. For example, bike, camera Ask some students to practice the conversation in classs. A: When was the phone invented
8、? B: It was invented in 1876.A: Who was it invented by? B: It was invented by Bell.Step V: Some pictures about Chinese SpaceflightShow some pictures to students. Let Ss guess who they were invented by. Raises students national sense of pride. Step VI : Exercises There are some exercises about the lesson. Review the important points in class.Step VII: HomeworkReview new words and finish the exercises in Page99-100(课时作业第一课时)学|优 中 考，网
