Learning about Language名师教学视频（文字实录）

Unit 3 computers

Learning about Language 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. Teaching Important Point：

The use of the present perfect passive voice. Teaching Difficult Points：

How to master the usages of some important words and phrases and the Present Perfect Passive Voice. Teaching Methods：

1.Task-based learning. 2.Cooperative learning. 3.Explanation and practice. Teaching Aids：

1.A tape recorder. 2.A multimedia. Teaching Procedures：

Step 1 Revision T：Boys and girls，in last period we learned something about the history and development of computers.Now who would like to retell the text with the help of these figures? In 1642 ,in 1822,In 1936, .In the 1940s, In the 1960s, in the 1970s, now . S1：Let me try..In 1642，a calculating machine was used in France.... T：Congratulations!You’ve done very well.Now try to do the same to your partners，OK!

Step 2 Words and Expressions Task 1 T：Please turn to Page 20 and finish Discovering Useful Words and Expressions.At first，look at Ex.1.From the reading passage，find the words and expressions with the following meanings.Now，ten students will be asked to give the words.Who can?Volunteers! Check the answers together. Task 2. T：Well done.Now please look at Ex 2.and complete the passage with some of the words above.Pay attention to the use and the forms of those words. Task 3

T：Please finish Ex.3.Look at the sentences on Page 20.You can create your own story according to the outline. Then some of you will be asked to read the sentences one by one. Step 3 Grammar—The Present Perfect

partI 现在完成时被动语态讲解：

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, 其构成是:

have / has been + done

1. The dirty clothes have been washed. 2. The plan has been studied by the experts for three times.

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注意：现在完成时的被动语态：

have / has + been + v.-ed

现在完成进行时的主动语态：have / has + been + v.-ing

它们的构成的区别在最后的动词上，现在完成时的被动态接的是过去分词

(v.-ed), 现在完成进行时的主动语态接的是现在分词

(v.-ing)。

The child has been taken care of by Grandma Wang all these years. I have been working for four hours up to now. 1. 副词的位置

often, usually, always, never, hardly, seldom等副词置于have/has和been中间。

如: [误] Such a man has been hardly believed.

[正] Such a man has hardly been believed. 2. 并不是所有动词都有被动语态

①

happen, take place, break out, belong to, cost, last等不及物动词或词组无被动语态。如：

[误] Great changes have been taken place in China since 1978. [正] Great changes have taken place in China since 1978.

②

open, break, drop等不强调动作发出者时常用主动语态。如：

[误] The door has been opened of itself.

[正] The door has opened of itself. PartII 运用

Pay attention to the use of the present perfect 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.

Things have been done well

Things have been done badly

Part III 巩固练习

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1. ---How long _____ at this job?

B

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--- Since 1990.

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A. were you employed

B. have you been employed

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C. had you been employed

D. will you be employed

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2. When and where to go for the on-salary holiday ___yet.

D

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A. are not decided

B. have not been decided

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C. is not being decided

D. has not been decided

Step4 Homework

Finish the exercise on the paper.

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