Learning about Language优质课教案

Book2

Unit3 Computers

Learning about Language Teaching aims: 1. Knowledge aims：

To master the knowledge of the present perfect passive voice. 2. Ability aims：

①Enable students to know the structure of the present perfect passive voice . ②Enable the students to express a speech using the present perfect passive voice. 3. Emotional aims：

Develop the sense of cooperative and autonomous learning Teaching focus and difficult points: 1. Let students learn the knowledge of the present perfect passive voice. 2. Enable students to use the present perfect passive voice to complete the passage. 3. Enable the students to use the present perfect passive voice freely. Teaching aids：

blackboard, PPT, multimedia Teaching methods：

①task-based teaching ②cooperative and autonomous learning

Teaching procedures Step 1: Presentation and lead-in

Show some pictures of different forms of computers. A wrist-worn PC has been invented recently. A pen-like computer has already been developed. As is known to all,computers have been made smaller and smaller. Task 1:Find the structure

1. Ask the students to show the sentences and read and translate them.

2.Show some sentences on PPT with the present perfect passive voice, and ask the students to draw a conclusion. Q1: What is the structure of the present perfect passive voice? How to translate it?

Step2 .Learn the knowledge of the present perfect passive voice Task 2: Learn the structure. Give some explanations 1构成：

主动语态

被动语态

现在完成时

have/has done---------- be done 现在完成时被动语态

have/has been done

2.Example:Change the following sentences into the present perfect passive voice. We have made a plan.

主动语态

(the Active Voice) 主动语态表示主语是动作的执行者。

被动语态(the Passive Voice) 被动语态表示主语是动作的承受者

Then ask the ss to find the subject and object of the sentence above and change it into the

present perfect passive voice. A plan has been made by us.

3.

Further explanation and practice. Tom broke the window. Tom broke the windows. He broke the windows.

4.

Make a conclusion:How to change sentences into the present perfect passive voice. 1)找宾语

----即动作的承受者

2)判断宾语的单复数

----即be动词的单复数. 3)判断动词的时态

----即be动词的时态. 4)修改谓语的时态

----即原句动词改为过去分词

5) 修改原句的主语

----即by+ 主语.

5.Group work:Ask the ss.to do EX.2 on P21 and then check their answers.

5.

Make a conclusion about the present perfect passive voice 1)定义：现在完成时的被动语态表示动作发生在过去, 到现在已经完成或对现在仍有影响. 2）句型

1. 现在完成时被动语态肯定句

主语+has/ have been +P.P.+... (P.P.=动词的过去分词形式) Her motorbike has been stolen. 她的摩托车被盗了。

All the offices have been linked by computer. 所有的售票处由计算机联网工作。

2. 现在完成时被动语态否定句

主语+has/ have +not+ been+ P.P.+... The task has not been finished yet. 任务尚未完成。

Many skilled workers have not been trained in the company. 这家公司并没有培养多少熟练工人。

3. 现在完成时被动语态一般疑问句

Has he(she, it,单数名词)+been+P.P.+...? Has a new computer been bought? 买了一台新电脑吗? Have they been sent abroad to study Eng-lish? 他们已经被派往国外学英语了吗? 4. 现在完成时被动语态特殊疑问句

疑问词+have (has)+主语+been+ P.P.+...? What has been bought by Tom? 汤姆已经买了什么东西? Who have been helped by the new computer? 谁已经得到这种新计算机的帮助? How many buildings have been built in

this school?这所学校已经建造了多少座大楼?

Where has the car been repaired? 这辆小汽车已经在哪里修理好了?

4. 一些特殊动词, 如borrow, finish, begin, buy, start, return, marry, open, join等构成的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思, 则需改换动词或时态。

Step4.Use the present perfect passive voice. （改错题）

1. A personal computer has bought by us. 2. Many problems has been found with our new computer. 3. A PC has been built the way we wanted. 4. Our computer just has been joined to the internet. 5. The computer was used every day since we bought it. 6. A lot of e-mails had written on the computer in the past 5 years.

Step5.Homework