Learning about Language课件配套优秀公开课教案设计

Unit 3 Computers

The 2nd period: learning about language The Present Perfect Passive Voice Goals:

1. Learn the Present Perfect Passive Voice.

2. Help the students master the way of using the correct voice, telling the differences between the active voice and the passive voice. Teaching Procedures:

Step 1: Revision and lead-in

1. Review words in this unit by asking questions. 2. Check the homework first

Ex1:

1.revolution; 2.network; 3.simplify; 4.calculate; 5. mobile; 6.solve; 7.explore; 8.totally; 9.anyway; 10. finance

Ex2:

1.explore

2.Web

3.technology 4.artificial 5.applications

6.intelligent 7.

logically

8.reality

3. Lead-in

(show the students some pictures and ask them to make some sentences, using the Present Perfect Passive Voice.)

Eg: A calculating machine has been replaced with the laptop.

The buildings have been destroyed in an earthquake. Step2: Discovering

Ask the Ss to discover whether these sentences have something in common.. Help them to learn the useful structure : the Present Perfect Passive Voice.

Step3: Discussion:

learning the structure

Give some explanations

构成：

主动语态

现在完成时

have/has done

I have taught English for 9 years. 被动语态

现在完成时

have/has been done

1.The dirty clothes have not been washed.

2.The plan has been studied by the experts for three times. Step4: Practice and exercises

1.

multiple choices …

2.

error correction 1. A personal computer has bought by us. A personal computer has been bought by us. 2. Many problems has been found with our new computer. Many problems have been found with our new computer. 3. The computer was used every day since we bought it. The computer has been used every day since we bought it. 4. A lot of e-mails had written on the computer in the past 5 years. A lot of e-mails have been written on the computer in the past 5 years. 3.

Fill the gaps and put the verbs into correct form.

1. First as a PC and then as a laptop, I _______________ (use) in offices and homes since the

1970s.

2. Over time my memory ______________ (develop) so much that, like an elephant, I never forget anything I __________________(told). 3. Since the 1970s many new applications __________________ (find) for me. Step5: Using the structure :

Enjoy a poem—look at the way Play a game: 1. Give The Ss the situation : Get into groups of four. Your task is to decide what has been decided for the class .Take turns to make the ideas as interesting or as lively as you can.

2. Give the Ss some examples:

S1: It has been decided that those who do not do heir homework will be asked to return to school on Saturday.

S2:It has been decided that those who keep the classroom tidy should be allowed to go home early everyday.

S3:It has been decided …

S4:…

3. Ask them to collect the ones they all like best and be prepared to tell them to the class.

Step6: Homework

Try to remember the grammar rules and do exercises 2 and 3 on page 21.