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高一英语必修2Unit3教案


第一课时 教学目标

Warming Up, Pre-reading

1. To know something about computers. 2. To learn and talk about computers. 教学重点 (1)使学生了解计算机的发展历程,及其在当今社会的广泛运用; (2) 鼓励学生用英语表达自己的观点,进行简单

的推理和做出决定。 教学难点 (1) 教会学生通过时间的先后顺序来表达一件事; (2)让学生自己发现并感悟相关的语言规律,在学习过程中培养语感。 教学方法 Individual, pair or group work to make every student work in class. 教具准备:多媒体一体机 教学过程和方式 Step 1. Leading-in Purpose: To activate the Ss and arouse them to talk about the importance of computers in modern society. Ask Ss whether they have a computer or not and what they use it for. Let them talk as much as possible Step 2. Warming Up Purpose: To get Ss to think about the different ways computers can be made. Pair work Get Ss to look at the following pictures, and then ask them to answer the questions.

A huge computer

A PC

A notebook computer A calculator 1. What are they? 2. What do they have in common? Suggested Answers: 1. a huge computer, a personal computer, a notebook computer, a calculator, an abacus 2. (1) to be used to calculate; (2) operate by human beings; (3) they are all artificial; (4) show figures in a certain way. Group work Ask Ss the following questions and encourage them to say more. 1. How have computers changed our lives ? 2. What do you know about computers ? Suggested Answers: 1. They’re a much more useful and humane tool than the phone , and with corporate America behind them the networks will be everywhere--- changing our lives more than any technology since the automobile. 2. A multi-function electronic device that can execute instructions to perform a task. 作业设计: Read the passage B in the Workbook. 教学回顾: 班 课 级 时 时 出 间 席 序 缺 号 席









第二课时 教学目标

Reading

1. To know something about computers. 2. To learn and talk about computers. 教学重点 (1) 使学生了解计算机的发展历程,及其在当今社会的广泛运用; (2) 使学生了和掌握现在完成时的被动语态的用法; (3) 鼓励学生用英语表达自己的观点,进行简单的推理和做出决定。 教学难点 (1) 教会学生通过时间的先后顺序来表达一件事; (2)让使学生了和掌握现在完成时的被动语态的用法; (3)学生自己发现并感悟相关的语言规律,在学习过程中培养语感。 教学方法 Individual, pair or group work to make every student work in class. 教具准备:A recorder,small blackboard 教学过程和方式 Step 1 Lead-in Ask and answer the three questions between T and the Ss. Step 2 Speaking Talk about the pictures in pairs or groups. Step 3. Reading 1. Skimming Purpose: 1. To get a brief understanding of the text. 2. To train the students’ listening ability. First, let Ss skim the text and then listen to the recording of the text. Pay attention to the pauses and pronunciation.

2. Scanning Purpose: To get Ss to have some details in the text. Now we are to read the text again and underline all the expressions in the text. Write them down in your notebook. 3. Further Reading Purpose: To get Ss to get more details about the text. Read the text again and find the information to complete the table, which describes the development of computer. 1642: ___________________________________________________ 1822: The Analytical Machine was made by Charles Babbage. ____: ___________________________________________________ 1940s: ___________________________________________________ _____: The first family of computers was connected to each other. 1970s: ___________________________________________________ Now: ___________________________________________________ Step 4. Retell Purpose: To have a deep understanding of the text. Ask Ss to use the chart above to retell the development of the computer. One possible version: I, a computer, was a calculating machine in 1642 in France. Then I was built as an Analytical Machine in 1822, which was a technological revolution. I became a “universal machine” in 1936 to solve any mathematical problem. I was not very big at first then I became huge, the size of a large room before I was made smaller and smaller. Getting new transistors, later very small chips I changed my shape. I was connected with other computers and turned out to part of a network in the early 1960s. In 1970s I was brought into people’s homes, and came the Internet. Step5. 作业设计 1. Write a short passage about the development of computers. 2. Finish Ex1 (P19), Ex2 (P20). 教学回顾:

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第三课时 Language points 教学目标 1. To know something about computers. 2. To learn some important words and phrases. 3. To learn some sentence patterns. 教学重点 (1) some important words and expressions.. (2) some sentence patterns. 教学难点 (1) some important words and expressions.. (2)some sentence patterns. 教学方法 Individual, pair or group work to make every student work in class. 教具准备:A recorder,small blackboard 教学过程和方式 1. common (1) most widely known; ordinary: (2) have nothing/little/something/ a lot in common 2. analytical 分析的 3.technology 科技;技术 Eg With the development of technology, we will cure AIDS sooner or later. 4.calculate(v.) 1) to use numbers to find out a total amount, distance, etc. 计算; 核算 2) to guess sth by using all the information available 推测,估计 It is impossible to calculate what influence he had on her life. 5.go by : to pass 逝去,过去

Things will get easier as time goes by. 随着时间的推移,情况会有所改善。 6.totally:completely 完全地; 全部地; 整个地 They come from totally different cultures.他们来自完全不同的文化。 7.share with: to have or use sth at the same time as sb else 共用,合用

Mary shares a house with three other students. 玛丽和另外三个学生合住一间 房子。 Share in 分享,分担 8.explore (v.) 1)to travel to or around an area or a country in order to learn about it 勘察; 探 索; 考察 The city is best explored on foot. 最好是徒步考察这个城市。 2)examine sth completely or carefully in order to find out more about it. 探究, 调查研究 These ideas will be explored in more detail in Chapter 7.这些想法将在第七章 里作更详细地探讨。 9.in a way: to a certain extent In the way 阻碍,妨碍 作业设计: Use the words above to make sentences and check them with your partner. 教学回顾: 在某种程度上

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第四课时 Learning about Language 教学目标 1. To know something about computers. 2. To learn and talk about computers. 教学重点 (1)Some important words and expressions. (2)语法:现在完成时的被动语态 教学难点 (1) To make up some sentences with the new words. (2)Translate some sentences using the new grammar. 教学方法 Individual, pair or group work to make every student work in class. 教具准备:A recorder,small blackboard 教学过程和方式 Step 1. Learning about Language Fill the blanks and check the answers altogether. (1) Snow is _______(常见的) in cold countries. (2). Can you _______(估计)the cost of this journey? (3). The _________(分析) of the samples on the murder spot showed some valuable clues to the police. (4) I shall go and see him ________(无论如何) (5) He's some kind of ________(数学)genius. Step2:Grammar (1) Presentation ① Revise the grammar: the present passive voice. am / is / are + done

② Revise the grammar: the present perfect voice. Have/has + done ③ Explain the grammar: the present perfect passive voice. ——>Have/has been +done (2) Practice ① Fill the blanks with the correct tense. A. –The window is dirty. It _______ ____ (not clean) for weeks. B. ---George and Lucy got married last week. Did they have a big wedding? ---No, I __________________ (not invite). Did they have a big wedding? . C. ---Have you moved to your new apartment? ---Not yet, it _______________(paint) at the moment. D. too much. The students have been made __________(not play) computer games E. Since then, all different kinds of information ____________________(处理)by computers. F. He doesn’t mind the story _____________(编造) in this way. D. not to

Suggested Answers: A. hasn’t been cleaned B. hadn’t been invited C. is being painted play E. has been dealt with F. being made up ② Translating following sentences into Chinese

A. A new personal computer has been bought. B. Many problems ahs been found with our new computer. C. A PC has been built the way we wanted. D. Our computer has just jointed to the Internet. E. The computer ahs been used every day since we bought it. F. A lot of e-mails have been written on the computer in the past year. Step 3. 作业设计: Finish Ex1 (P21), Ex2 (P21) and Ex3 (P21). 教学回顾:
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第五课时 教学目标

Listening

1. To practice listening.
教学重点

Improve their listening skills.
教学难点 How to improve their listening skills. 教学方法

Individual, pair or group work to make every student work in class.
教具准备:A recorder,small blackboard 教学过程和方式 Step 1. Listening (Using Language)

1. Show the fours pictures to Ss and let them talk about them.

TV DVD

2.Listen to the tape 3. Listening task (Workbook P58)

Speaking

1. Group work Get two Ss to be a group and tell each group do as follows. Then let some of the groups present their reports. You and your partner have been asked to help choose computers for your school. You have looked at several computers. Talk about the special things each computer can do. Make a decision about which kind of computer to buy and explain why. Write a report about your choice. Then read your report to another group as if they are a teacher or the headmaster. Below is a list of things your computer could have. 2. Individual work Suppose every student have a chance to get a computer and they can choose any kind of computer. Let them think about the reasons they choose the computer. Then ask them to present their reasons. 作业设计:Prepare for next period. 教学回顾:

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第六课时 Using language 教学目标

1. To understand the passage clearly. 2. To learn some important words and phrases. 3. To learn some sentence patterns.
教学重点

(1)some important words and expressions.. (2)some sentence patterns.
教学难点

(1) some important words and expressions.. (2)some sentence patterns.
教学方法

Individual, pair or group work to make every student work in class.
教具准备:A recorder,small blackboard 教学过程和方式 Reading

1. Listen to the tape and get the main idea of the passage. 2. read the passage carefully and ask Ss to answer the following questions. (1) What does he act as on the team?

(2) What helped him to move and think? (3) Why does he think the team who won the first place cheated? Suggested Answers: (1) On the team, I’m a striker, so I can run very fast. (2) My computer chips help me to move and think like a human. (3) Because they had a new kind of program, which had just been developed before the competition. Step 3. Writing
Sample writing :

With the development of computer-technology, computers are becoming more and more popular with people all over the world. The frequency of using computer has risen year by year. The advantages taken over by computers can be seen everywhere. Due to the comprehensive applications of the computer, it has been gradually taking place of human beings in some areas. Such as people can use computers to compose,to purchase gods, and to hold meetings. What's more, computer can greatly enhance people's working efficiency.
作业设计:write an essay 教学回顾:


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