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1、Unit 6 When was it invented ?Section A, (la1c)教学案四川省江安县汉安中学校 汪贵金教学内容：Unit 6 When was it invented ?Section A, (la一1c)教学重点：被动语态；谈论发明历史教学难点：被动语态构成；invent的相应变化形式教学手段：PPT辅助教学，课文配套听力录音教学时间：1 class (45m)情感教学：让学生谈论发明，激发创新意识教学步骤：Step 1 Revisiontwo pictures, and make Ss talk about what they are made of, then
2、emphasize the word: make-made-made;another picture, and help Ss to talk about where tea is produced, then emphasize the word: grow-grew-grown;Ss to make a conclusion: 被动语态构成：be + 过去分词，and give the note.Step 2 Presentationthe students that we will study Unit 6, and teach invent，writing it on the blac
3、kboard;three pictures of inventions on ppt, teach “invention，writing it on the blackboard;three pictures of inventors on ppt, teach inventor”, writing it on the blackboart, making a note about the three words;Ss to match the inventions with the inventors, then check the answers.Step 3 TalkingInstruc
4、t Ss to talk about the inventions one by one as the following: Alexander Bell.The first telephone.;Make Ss to talk about the pictures again.Step 4 la, Discussingpictures of inventions and ask them to tell what they are;Ss to discuss in pairs the order the inventions were invented, and teach the exam
5、ples; the answers.Step 5 lb, ListeningShow the pictures of inventions and years;1. Help Ss to tell the names of the tings and the years;Teach the years, then ask a few Ss to read them;2. Play the listening materials and ask Ss to match them;Ask Ss to tell the answers and check the answers.Step 6 1c,
6、 PracticingHelp Ss to study the conversation with loud reading;1. Ask Ss to make new ones as the example;Ask three pairs to show their conversations according to the inventions given.Step 7 ExercisingShow the exercises Part 1 on ppt, and help Ss to make the correct choices, helping them tell the rea
7、sons at the same time;1. Show the exercises Part 2 on ppt, and help Ss to fill the blanks with the correct forms of the words given, helping Ss to understand them.Step 8 Last ConclusionInstruct Ss to revise and remenber the two notes on the blackboard.Step 9 HomeworkAsk Ss to do the exercises on their exercise books (Section A, la1c) as homework