Learning about Language评课稿

Unit 3

Computers Learning about Language 现在完成时的被动语态教学设计

一、Learning aims 1. To know the structure of the present perfect passive voice. 2. To learn the usages of the present perfect passive voice. 3. To become interested in grammar learning and try to use them freely. 二、Teaching procedure: 1）Leading-in: Q：What’s Xiao Ming doing?(看图

A：→Xiao Ming is doing his homework. →Two hours later, Xiao Ming is watching the TV and he has finished his homework. Change the object(the homework) into the subject. How to say? Xiao Ming has finished his homework. →The homework has been finished by Xiao Ming. 2）Observe the following sentences, and find something in common. (1)Over time I have been changed quite a lot.

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

三、分点详解

Ⅰ.概念(The concept)：

1. 说话时已经完成

的动作或出现的结果。

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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)．

Ⅱ.句型(the sentence patterns)：

1. 现在完成时被动语态肯定句句型：

These trees ________________(water) lately.

2. 现在完成时被动语态否定句句型：

The task _____________________(finish) yet.

Many workers_____________________（train) in

the company. 即学即练

Making up sentences using present perfect passive voice: 1.

The buildings, destroy, in the earthquake

The buildings _________________in the earthquake. 2.

the shared bikes, use, not,in some big cities The shared bikes _________________in some big cities. 3.

A new bridge, build, in our city

A new bridge _____________in our city.

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Ⅲ. 用法(The usages): 现在完成时的被动语态同他的主动语态一样，

强调过去的动作对现在造成的影响或后果already,yet, just, never, recently 等副词(常放在have或has之后)连用。

The work has already been completed. 常用于现在完成时的句子中：since then /since +从句,so far, by now, up to now, recently, lately, already, yet, in/during the past/last + 段时间等。

四、相关的练习以课件形式展现（详见课件）

五、Summarize the grammar.

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