Learning about Language优质课一等奖教案

Unit3 Computers

Period 2

Learning about Language The General Idea of This Period：

This period includes revision of the words, phrases and important sentence patterns. From this period the students will learn how to use some of the key words and expressions in the text and do some exercises for consolidation. Teaching Aims：

Help the students to learn to use some useful words and expressions. Help the students to learn and understand the passive voice of the present perfect tense. Teaching Important Point：

The use of the key words and expressions in the text. The use of the passive voice of the present perfect tense. Teaching Difficult Points：

How to master the usages of some important words and phrases. Hoe to use the passive voice of the present perfect tense.

Teaching Methods：

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

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? S1：Let me try. In 1642，a calculating machine was used in France. Then in 1922，the Analytical Machine was made by Charles Babbage. It could follow instructions from cards with holes. In 1936，Alan Turing，the real father of computers，wrote a book to describe how computers could be made to work and built a “universal machine”

to solve any mathematical problem. Later，people discovered the computer had “artificial intelligence. In the 1960s，the computer got his new transistors. Its size was totally changed at that time.

And in the early 1960s，the first family of computers were connected to each other. In 1970s，computers have brought into people’s homes.

Now computers have been used by billions of people to deal with information and communicate with each other around the world by the Internet. 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 for each of 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 the words below. Pay attention to use the correct forms of those words. The possible answers：

Explore

intelligent

web

technology

logically artificial

application reality

Step 3 Grammar—The Present Perfect

Passive Voice T：Boys and girls，now please pay attention to the following sentences in the text：

1.As the years have gone by，I have been made smaller and smaller. 2.Since then，my family and I have been used by billions of people to deal with information and communicate with each other around the world by the Internet. 3.I have truly been built to serve the human race since my birth. T：What verb tense is used in these sentences? And what verb voice is

used in these sentences? Yes，the present perfect passive voice is used in these sentences. Can you tell us the structure of the present perfect passive voice? Quite right. The structure of the present perfect passive voice is “subject＋have/has been done＋object”.The function of present perfect passive voice is indicating verbs’ the present perfect and the passive voice.

OK，let’s practice the present perfect passive voice. Task 1 T：Please turn to Page 21. Let’s finish Discovering useful structures. At first，look at Ex.2. According to examples，change the following sentences into the present perfect passive voice. Put the verbs into the correct form. Suggested answers：

1.A new personal computer has been bought. 2.Many problems have been found with our new computer.

3.A PC has been built the way we wanted.

4.Our computer has just joined to the Internet. 5.The computer has been used every day since we bought it. 6.A lot of e-mails have been written on the computer in the last year. Task 2 T：Class，let’s play a game called “What has been decided”.Now，get into groups of four. Your task is to decide what things have been decided

for the class. Take turns to make the ideas as interesting and lively as you like. You may finish them according to EXAMPLES on Page 21，（or finish Ex.3 after class.）Then collect the ones you all like best and be prepared to tell them to the class. Suggested answers：

S1：It has been decided that those who know of the computer will be asked to say something in class. S2：It has been decided that those who didn’t clean the blackboard will be asked to come into office after school. Step 4 Homework T：OK，it’s almost time for a break. Now look at Ex.2 on Page 57. Rewrite the following sentences using the present perfect passive voice after class.

Step 5 The Design of the Writing on the Blackboard Unit 3

Computers

Period 2 The Present Perfect Passive Voice 1.As the years have gone by，I have been made smaller and smaller. 2.Since then，my family and I have been used by billions of people to deal with information and communicate with each other around the world by the Internet. 3.I have truly been built to serve the human race since my birth.

Structure：

“subject + have/has been done + object”