Learning about Language课堂实录

Unit 3 Computer

Part One: Teaching Design (第一部分：教学设计)

Period 1: A sample lesson plan for reading

Aims

To talk about computer

To read about computer

Procedures

I. Warming up

Warming up by talking about computer Look at the pictures on page 17. What are they? What do they have in common? Yes, they are computers. Then what is a computer?

A computer is a machine which stores knowledge in its memory and does calculations on that knowledge. This knowledge is stored in symbols; it is called data. A computer usually has a monitor to show results. However, some computers can speak; these computers can be used for voice mail.

计算机室

A computer frequently requires a boot device. The boot device contains the computer’s operating system and data. Computer programs can be installed onto a computer. Some people think that computers are less useful if they do not have access to the Internet. They think this because the Internet allows the computers to send and receive data and email across the world.

A computer is now almost always an electronic device. It usually contains materials which are toxic; these materials will become toxic waste when disposed of. When a new computer is purchased in some places, laws require that the cost of its waste management must also be paid for. This is called product stewardship.

In some countries old computers are recycled (melted down) to get gold and other metals. This is dangerous, because this procedure releases the toxic waste into the water and soil.

Computers become obsolete quickly. Very often they are given away and new ones replace them within two or three years. This makes the problem worse. Computer recycling is thus common. Many projects try to send working computers to developing nations so they can be re-used and will not become waste as quickly.

II. Pre-reading

1. Questioning and answering‑‑‑What do you know about computer?

●Electronic machine capable of performing calculations and other manipulations of various types of data, under the control of a stored set of instructions. The machine itself is the hardware; the instructions are the program or software. Depending upon size, computers are called mainframes, minicomputers, and microcomputers. Microcomputers include desk-top and portable personal computers.

●A multi-function electronic device that can execute instructions to perform a task.

●A device that accepts information, processes it, and supplies an output. A computer usually contains memory, a control unit, arithmetic and logical units, and a means for input and output.

●a programmable hardware component that is controlled by internally stored programs and that can perform substantial computations (including arithmetic and logic operations) without human intervention. A computer typically consists of one or more processing units, memory units, and associated peripheral input and output devices.

●Related to automation and electronic data processing. The Library of Congress commonly classes most computer-related books in HF5548, QA75-76, Z52, T385, and some TK ranges.

●a machine for performing calculations automatically

calculator: an expert at calculation (or at operating calculating machines)

●A computer is a device or machine for making calculations or controlling operations that are expressible in numerical or logical terms. Computers are constructed from components that perform simple well-defined functions. The complex interactions of these components endow computers with the ability to process information. If correctly configured (usually by, programming) a computer can be made to represent some aspect of a problem or part of a system. If a computer configured in this way is give

2. Discussing and sharing‑‑‑How have computers changed our lives?

Someday soon, if you haven’t already, you’re likely to plug into the computer network nation growing in our midst. Computer terminals, or small computers connected via modem (a modulator/demodulator circuit for encoding/decoding computer chatter) to ordinary telephone lines, should be as ubiquitous as the telephone itself. 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.

Joining a computer network is the same as joining a community. Small systems are like villages, where new members are formally welcomed. The larger networks, the Source and CompuServe, for example, are cities-anonymous, full of life and events, but difficult to fit into.

III. Reading

1. Listening and reading to the recording of the text WHO AM I?

Turn to page 18 and listen and read to the recording of the text. Pay attention to the pauses, pronunciation and intonation of the native reader.

2. Reading aloud and underlining expressions

Now we are to read the text once again and underline all the expressions in the text. Put them down into your notebook after class as homework.

3. Reading, identifying and settling

Attention, please! It is time to skim the text one more time and identify the difficult sentences. Try analyzing the structures of the difficult sentences and discuss them among your group members. You may also put your questions to me for help.

4. Reading and transferring

Scan the text for information to complete the table below, describing the development of computer.

IV. Closing down by doing comprehending exercises

Turn to page 18 and in pairs do the comprehending exercises No. 1 and 2.

Period 2: A sample lesson plan for Learning about Language

(The Present Perfect Passive Voice)

人教版高中英语必修二Unit3单元语法学习

I. 自主学习:

现在完成时的被动语态(II) 二．现在完成时的被动语态的各种句式

1.肯定句句型：主语+ have / has been +过去分词

Her motorbike has been ___________. 她的摩托车被偷了。

The city has been swept through by heat wave recently.最近炎热横扫了这座城市。

2.否定句句型：主语+ have/has +not+ been+过去分词

Many ____________ __________ have not been trained in the company.很多技术工人在那公司里没培训。

His work has not been finished yet.他的工作尚未完成。

3.一般疑问句句型：Have/Has

+主语

+ been+ 过去分词

...? Has a new computer been bought?

Have they been sent _____________(国外) to study English?

Have the new booking systems for tickets been used? 新的订票制度已在使用中了吗？

4.特殊疑问句句型：疑问词+

have /has + 主语+ been+过去分词

...? Where has the car been repaired?

Who have been helped by the new computer?

How many buildings have been built in this school?