Learning about Language优秀课堂实录

Unit 3 Computers Learning about language Teaching goals 1. The goals for knowledge 1）.To learn some useful words and expressions

2）.To learn the present perfect passive voice and master the structure.

2. The goals for ability 1). Enable the students to identify different passive voices and learn to use them. 2). Discuss the development of computer 3. The goals for emotion 1). Develop students’ interest in science and technology 2). Learn to cooperate with others Teaching important points Enable the students to use the present perfect passive voice. Teaching difficult points Enable the students to distinguish different types of passive voices. Teaching methods Comparing and practice. Teaching aids A projector, a computer and a blackboard. Teaching procedures & ways

Step Ⅰ Lead-in by revising the Reading passage with pictures and phrases about the history of computer Step Ⅱ Words explanation Fill in the word or expression for each of the following meanings from the text.

mobile, revolution, simplify, network, calculate, anyhow, totally, solve, explore, finance 1 _________ complete change in ways of thinking, working, etc 2 ________ connected computer system 3 _________ to make things easier 4 _________ to find the answer using numbers 5 _______can be moved easily from place to place 6 _______ to work out the answer to a problem 7 _______to travel around an area to find out about it 8 _______ completely 9 ________ anyway 10 _______ activity of managing money Step Ⅲ Presentation Discover what the sentences have in common Group 1 1、I was built as an analytical machine by Charles Babbage, 2、I was programmed by an operator. 3、It was considered a technological revolution. 4、I could be made to work as a “universal machine”

5、I was made smaller. 板书：be + done 被动语态

Group 2 1. Over time I have been changed quite a lot.

2. I have been used in offices and homes since the 1970s. 3. Since the 1970s many new applications have been found for me. 4. I have also been put into robots and used to make mobile phones as well as help with medical operations. 5. I have even been put into space rockets and sent to explore the Moon and Mars. 板书： have /has been done

Step IV Conclusion Can you change them into the active voice? Have a try. 1、I was built as an analytical machine by Charles Babbage. 2、I was programmed by an operator. 3、It was considered a technological revolution. 4、I

could be made to work as a “universal machine”.

5、I was made smaller. 6. Over time I have been changed quite a lot. 7. I have been used in offices and homes since the 1970s. 8. Since the 1970s many new

applications have been found for me. 9. I have also been put into robots and used to make mobile phones as wellas help with medical operations. 10. I have even been put into space rockets and sent to explore the Moon and Mars. Ask the students to do the following. 1. Charles Babbage built me as an analytical machine 2. An operator programmed me.

3. People considered it a technological revolution. 4. People could make me work as a”universal machine“

5. People made me smaller 6. Over time people have changed me quite a lot. 7. People have used me in offices and homes since the 1970s. 8. Since the 1970s people have found new applications for me. 9. People have also put me into robots and used me to make mobile phones as well as help with medical operations. 10. People have even put me into space rockets and sent me to explore the Moon and Mars. 板书：主动句变被动句的关键---找宾作主,看时定式

现在完成时的被动语态表达以下两个概念：

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。

现在完成时的被动语态由have/has been＋v-ed构成，其中v-ed为过去分词，

表示被动。

Step Ⅴ Practice 1.Making up sentences using

present perfect passive voice:

1）The river has been polluted.

2）The fire has been put out (by the firefighter). 3) A new bridge has been built in China. 4) Many trees have been cut down. 2. Work in group Write a short passage about the development of mobile phones. Try to use present perfect passive voice.

3. Extension 1). When fat and salt (remove) from food, the food tastes as if it is missing something.（2017.全国Ⅰ卷） 2). Steam engines (use) to pull the carriages and it must have been unpleasant…（2017.全国Ⅱ卷） 3). Sarah (tell) that she could be Britain’s new supermodel,（2017. 全国Ⅲ卷） 4). So it was a great honor to… I (allow) to get up close to these cute animals…（2016.全国Ⅰ卷）

5).Truly elegant chopsticks might (make) of gold and silver with Chinese characters. （2016.全国Ⅲ卷） 6). Tea in China was traditionally drank from cups… （2013.全国Ⅱ卷） 7). …fresh vegetables and high quality oil are using for cooking. （2016.全国Ⅰ卷） ). …after this photo was took, …（2017. 全国Ⅲ卷） Step Ⅵ Homework Complete the Exercise in the work book. Prepare for the using language.