设计说明:由记者采访导入新课，复习课文，激发学习兴趣，呈现现在完成时的被动语态。学生在初中已经接触到这个语法，因此很快能回忆并发现这个语法现象,为感知体验做好铺垫。这个环节的设计，是尊重学生已有经验的体现，也是对英语学习有困难的学生的关心。

Step 2 Presentation(呈现体验阶段)

I. 初步体验

T: Nowadays, computer has been used more often than ever before by the students. Then, what has it been used in our life?

Make the students try to express themselves freely. Help the students to describe the pictures, using the present perfect passive voice.

S1: Computer has been used to chat with my friends.

S2: Computer has been used to send E-mails to my friends.

S3: Computer has been used to gather information.

…….

T: I am glad to hear that computer has really been used by us.

Students in class13 (14) have bought a new personal computer. We can also express our meaning:

Ss: A new personal computer has been bought by them.

T: Now, look, what about the computer used by the students in class13 (class14)?

1.They have found many problems with our computer.

2.They have just joined their computer to the Internet.

3.They have built a PC the way they want.

4.They have used the computer every day sine they bought it.

5.They have written a lot of e-mails on the computer in the past year.

T: ask students change these sentences into the present perfect passive voice.

S1. Many problems with their computer have been found by them.

S2. Their computer has just been joined to the Internet.

……

设计说明：计算机，高中生最感兴趣的话题之一。兴趣使学生积极大胆参与和教师地交流，在谈论计算机的用处时，学生通过has been used这一短语体验现在完成时的被动语态，在此基础上，就有关兄弟班同学使用电脑这个话题，进行主动语态和被动语态的转换。这一环节的设计，使学生在发现语法现象的基础上，感知和体验语法在实践中的运用。

II. 呈现阶段

Together with the students，the teacher summarizes the use of the structure.