Learning about Language公开课教案

Unit 3 Computers

Learning about language

I. Teaching aims 1.Help the students to learn to use some useful words and expressions. 2.Enable the students to learn how to use the present perfect passive voice. II. Teaching important and difficult points:

1.The use of the present perfect passive voice. 2.How to master the usages of some important words and phrases and the present perfect passive voice. III. Teaching Procedures：

Step 1. Revision and Warm up

T：Boys and girls，yesterday we learned something about computers.Now who can tell me how you often use computers? Step 2. Words and Expressions

Task 1 T：Please turn to Page 20. and look at Ex 1.Now 5 students will be asked to share your answers. Besides, another 5 students will be the little teacher.

Check the answers together. Task 2 T：Well done.Now please look at Ex 2. and complete the passage in groups. Step 3. Grammar—The Present Perfect Passive Voice Task 1: Students find something in common by themselves (1)Over time I have been changed quite a lot.

(2)That book has been translated into at least 12 foreign languages.

Task 2: Learn the structure 1.概念(The concept)：

（1）说话时已经完成

的动作或出现的结果。

（2）主语是行为动作的承受者。

【注意】

（1）过去分词前有两个助动词have/has和been。

（2）必须表示被动。

I ____________(tell) about it many times．

The bridge ________________(build)．

2.

句型(the sentence patterns)：

（1）现在完成时被动语态肯定句句型：

主语+ have/has been +done （2）现在完成时被动语态否定句句型：

主语+ have/has +not+ been+done 3. 用法(The usages): （1）现在完成时的被动语态同他的主动语态一样，强调过去

The work has already been completed. （2）表示一个被动的动作或状态开始于过去,持续到现在,并可能持续下去,常与

for 或since引导的时间状语连用。

My car has been repaired for two days. The house has been painted since the family moved out. （3）用在条件状语从句中，表示将来某时已经完成的动作。

We will start as soon as the work has been finished. Task 3:Practice

1.

Finish the sentences （1）The important problem _________________ (discuss) for nearly two weeks. （2）How long has the machine ___________ (use)?

2.Finish Ex2 on page 21. Step 4. Summary

Acknowledge tree（通过知识树直观的板书呈现并归纳所学知识）

Step 5. Homework 1.review the words and expressions 2.Finish Ex3 on page 20