Learning about Languageppt课件配套教案内容

Model 2 Unit 3 Computers

Learning about language

Grammar：The Present Perfect Passive Voice(现在完成时的被动语态)

Teaching aims:

1.

Knowledge aim Get students to learn The Present Perfect Passive Voice. 2.

Ability aim Get students to use The Present Perfect Passive Voice.correctly. 3.

Emotion aim Enable students to become interested in grammar learning. Teaching Importance and Difficulty：

1.

Get students to learn the new grammar---- The Present Perfect Passive Voice. 2.

Get students to use The Present Perfect Passive Voice correctly. Teaching methods:

1. Task-based teaching and learning 2. Cooperative learning Teaching aids: Normal teaching aids Teaching procedures: Step1 Revision 1.

Check the homework. 2.

The main idea of the passage we have learned. Step2 Leading in Fill in the blanks with proper form of the given words. 1.

He has kept (keep) the book for two weeks from library. 现在完成时态

2.

We have solved (solve) the problem. 现在完成时态

3.

The book was bought (buy) two days ago. 一般过去时的被动语态

4.

Many houses were destroyed (destroy) in the earthquake. 一般过去时的被动语态

5.

The problem has been solved (solve). 现在完成时的被动语态

6.

Many houses have been destroyed (destroy) in the earthquake. 现在完成时的被动语态

Step3 Grammar learning The Present Perfect Passive Voice(现在完成时的被动语态)

1. 两种时态

1) 现在完成时(have/has + 过去分词)

现在完成时的动作或情况虽然发生在过去，但它强调的是与现在的关系，用来说明现在的情况。现在完成时不能与表示确定的过去时间的状语连用, 如: yesterday, two weeks ago, in 1978, when I got there 等, 现在完成时常与

already, always, often, ever, never, yet, not...yet, just等不表示明确的时间副词连用, 还可以和表示时间一直延续到目前的带since, for 的状语及包括现在在内的词连用。如: now, today, this month, this year, recently, these few days 等。不能用在现在完成进行时态的动词，如：be, have, like, love, know, believe, hate等。

注意：一般过去时则是表示过去某时发生的动作或情况, 与现在毫无关系。

Eg. China has been a great number of changes since reform and opening-up policy.ts have

Eg. The scientists have developed a kind of robot. 2) 现在完成进行时

(have/has + been + 现在分词）

Eg. I have been waiting for an hour and a half. Eg. We’ll have been living here for two years. 2. 七种被动语态形式

1) 一般现在时的被动语态

(am/is/are+ 过去分词）

Eg. The work is done during two days. 2) 一般过去时的被动语态

(was/were+ 过去分词）

Eg. He was sent to the hospital immediately after the accident. 3) 一般将来时的被动语态

(will/shall + be + 过去分词或

+ be going to + be + 过去分词）

Eg. The work will be finished soon. 4) 现在进行时的被动语态

(is/am/are + being+ 过去分词）

Eg. The bridge is now being constructed. 5) 现在完成时的被动语态

(have/has +been + 过去分词）

Eg. The radio has been repaired when we phoned the shop. 6) 带情态动词的被动语态

(情态动词

+ be + 过去分词) Eg. This can be done in a few minutes.

7) 动词不定式的被动式

(to be + 过去分词) Eg. It is an honor for me to be asked to speak here. 现在完成时的被动语态

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, 其构成是: have/has been + done。

Eg. The dirty clothes have been washed.

脏衣服都已经洗了。

Eg. The plan has been studied by the experts for three times. 这项计划已经由专家研究过三次了。

Eg. The child has been taken care of by Grandma Wang all these years.

这些年来, 这个小孩一直由王奶奶照料。

2. 意义：

1）主语是行为动作的承受者。

如：The Temple of Zhang Fei has been rebuilt.

张飞庙已经过重建。

2）说话时已经完成的动作或出现的结果。

如: The door has been locked. 门已经被锁上了。

3）动作或状态始于过去, 持续到现在, 并可能持续下去。

如：He has been told about it for many times. 有人告诉他这事很多次了。（可能还会有人告诉他）4）用在时间和条件状语从句中, 表示将来某时已完成的动作。

如：We’ll start as soon as the work has been finished.

工作一完成我们就立即动身。

3. 注意：

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. (3) 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。

如：My brother has had(不能用has bought) this bike for almost four years.

[误] How long has this book been bought?

[正] How long ago was this book bought? Step4 Practise Correct the underlined parts. 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. Our computer just has been joined to the internet.

Our computer has just been joined to the internet. 4. The computer was used every day since we bought it.

The computer has been used every day since we bought it. 5. 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. Step5 Consolidation 1.

Do Ex2 on Page21. 2.

Check the answers with whole class 3.

Explain the difficult ones. Step6

Homework 1.

Finish off Ex1 and Ex3 on Page57. 2.

Remember the grammar focus and make sure to use it in sentences correctly.