英语人教版八年级下册Present-perfect-tense--教学设计.doc

现在完成 Present perfect tense 文山市三中英语组 郑传姣教学目标：1.现在完成时的构成及用法2.利用现在完成时解决实际问题。教学步骤：Step 1:Free talk1. What did you do last night?2. How do you like your English?3. What are you doing now?4. How are you going to improve your English?Step 2 Group work -competition Check your sight 1st group: find out the similarities1. I have done my homework 2. I have read the book3. I have gone to Beijing 4. I have been to Beijing Conclusion:S + have + done 2nd group: find out the differences 1. I have done my homework 2. He has done his homework 3. She has done her homework4. You have done your homework5. They have done their homeworkConclusion: I have done Heshe has done Youthey have done Guess Whats the negative form of those sentences above? S+ havehas not done Step 3 Presentation 1. Do some gestures, then give Ss some sentences，Let them guess the meaning e.g. : I have drunk a cup of water.I have smiled to him.I have sung a song.Conclusion: 现在完成时用来表示过去发生的动作对现在造成的影响或结果。2. give Ss these sentences: I have stayed here for 20 minutes.You have been here in Cancun for 20 years.Let them guess what the second function of this tense is.Conclusion:表示从过去开始一直延续到现在的动作或状态。在此必须强调动词必须是延续性动词。这一点也是这一用法的重点和难点。常见的非延续动词有come, start/ begin, buy, borrow, leave, die and so on.Step 4 Revision 现在完成时的构成，用法及否定式S + havehas done S + have has not done Step 5.ExerciseNow you have a chance to talk with Beckham ,the popular football star.Ask him: Have you ever been to? Hav