Learning about Language名师教学视频（文字实录）

Book2 Unit 3 Computer Grammar and Usage The Present Perfect Passive Voice Teaching Aims 1. Learn and master the main usages of the present perfect passive voice. 2. Change some sentences into the present passive voice. Teaching important points Get students to master the structures and usages of the present perfect passive voice. Teaching difficult points Enable students to learn how to use the present perfect passive voice correctly. Teaching aids: computer, blackboard, chalk and PPT.

Teaching methods 1. Task-based teaching and learning 2. Cooperative learning and practice Teaching procedures Step 1: Lead-in. ( 3 minutes) Present the jokes for the students.

1.A: I have been asked to get married hundreds of times. B: Oh! Who by?

A: My parents.

2. A man went to a hospital for a new brain. He was given a choice between two brains.

A: An engineer’s for￡20,000 or a politician’s for ￡500,000

B: Does that mean the politician’s brain is much better. A: Not exactly, said the doctor. The politician’s brain has never been used.

Step 2: Sentences from this unit. 1.

Over time I have been changed quite a lot. 2.

I have been used in offices and homes since the 1970s. 3.

Over time my memory has developed so much that, like an elephant, I never forget anything I have been told! 4.

Since the 1970s many new applications have been found for me. 5.

I have also been put into robots and used to make mobile phones as well as help with medical operations. 6.

I have even been put into space rockets and sent to explore the Moon and Mars. Step 3 point out the structures of the present perfect passive voice. 肯定句：_________________________ 否定句：_________________________ 一般疑问句

_______________________ 特殊疑问句

___________________________ Step 4 point out the definition.

归纳现在完成时的被动语态

现在完成时的被动语态:表示动作发生在过去，在说话之前已经完成，强调对现在造成的影响或产生的结果。

Our classroom has been cleaned. You needn’t clean it now.

我们的教室已经被打扫过了，你现在没有必要再打扫了。（说话的时候，打扫教室，这个动作已经完成，而且句子的主语是our classroom，是动作的承受者）

Step 5 present the two main usages. Activity 1 Fill in the blanks. 1. Tom’s novel _____________________________ (publish). 汤姆的小说还没有出版。

2.I am sorry, but the letters ____________________(type) yet.很抱歉，这些信件还没有被打印出来。(结果是现在还拿不到这些信。) 3. The problems ________________________( not solve) yet. 4. When and where to have our holiday ____________________ (decide) yet. 5.The work______________________(finish).工作已经完成了。(结果现在不用做这项工作了。) Let’s conclude. 现在完成时被动语态表示动作已经完成，强调对现在造成的影响或结果，经常与一些副词连用如already, ever, never, recently, lately, just, yet等，通常把这些副词放在助动词have或has的后面，有时候也可以放在句末。

Activity 2 Fill in the blanks 1. The child_____________(take) care of by grandma all these years.这些年来，孩子一直由奶奶照看。

2. The plan___________________(discuss) for nearly 2 hours. Let’s conclude. 现在完成时的被动语态另一个用法是，表示一直持续到现在的动作或状态，经常与for a time, since, how long, so far等表示一段时间的时间状语连用。

Activity3 pair work

Make a dialogue

1. A: The window is dirty. B: I know. It ___________________(not clean) for weeks. .

2. A: Do you know something about paper money? B: Paper money ___________________

(use) for over a thousand years.

3. A: We want to sit at the table near the window B: I am sorry, but it____________________ _ (take) already.

Activity 4 Change the following sentences into the present passive voice. 1.

My friend has bought a new personal computer. 2.

The shop has repaired my computer very quickly. 3.

An unknown virus has just attacked my computer. 4.

We have not solved the problem yet. 5.

The scientists have developed a kind of intelligent robot. Suggested answers: 1.

A new personal computer has been bought by my friend. 2.

My computer has been repaired by the shop very quickly. 3.

My computer had just been attacked by an unknown virus. 4.

The problem has not been solved by us yet. 5.

A kind of intelligent robot has been developed by the scientists.\

Step 6 Homework

Ask students to finish the exercise 3 on page 21. Underline the use of the present perfect passive voice in the following poem. Then fill in the chart below. Look at the way your face has been washed Look at the way your hair has been combed

Look at the way your shoes have been cleaned You’d better do them again.

Look at the way the flowers have been planted

Look at the way the grass has been cut Look at the way the paths have been swept I hope that you’ll come here again.