牛津 7B Unit 7 教案Title：Unit 5 Can & Could Teaching Objective: To recognize and understand how to use can and could to express ability in the present and past.Teaching Procedure:Warm Up:Please take out the preview paper and lets check it out. Step 1. Please translate the phrases into Chinese.1. row a boat2. play a kike3. play tennis4. fly a kite5. speak Japanese6. play the piano7. sing English songs8. ride a horseStep 2. Please answer the questions.1. Can you speak Japanese?2. Can you play basketball?3. Can you sing English songs?4. Can you play the piano?5. Can you fly a kite?6. Can you ride a horse?7. Can you run fast?8. Can you cook?Step 3.Please read out the reports about the sports your classmates couldnt do last year but can do this year.Presentation:Step 1.We have learn can before and know how to use it to express abilities. Well, lets review the sentence styles in which can is used.陳述句：sb./sth.+can+doe.g. He can dance. Millie can swim. We can sing English songs.否定句：sb./sth.+cannot/cant +do e.g. He cannot/cant dance. Millie cannot/cant swim. We cannot/cant sing English songs. 一般疑問句：Can sb./sth. do? e.g. Can he dance?-Yes, he can./No, he cannot/cant. Can Millie swim?-Yes, she can./No, she cannot/cant. Can we sing English songs?-Yes, we can./No, we cannot/cant.Step 2. Now, we know how to use can to express abilities now, but how to express abilities in the past. Generally speaking, we just change can into could. Tip: can-could, cannot/cant-couldnt/could not e.g. He could dance. We couldnt /could not sing English songs. Could Millie swim?-Yes, she could./No, she couldnt.Step 3. We have know how to use both can and could now. Lets finish the work on the book. And then lets check it out.Step 4. Do and check out