Learning about Language教学设计及说课稿

Unit 3

Computers教学设计

Learning about language

Step I :Discovering useful words and expressions

1 Find the word or expression for each of the following meanings from the text.

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

2

Complete the passage with the words below.

artificial technology intelligent Web applications explore reality logically

My brother was very interested in computers and enjoyed writing programs of his own. He used to download information from the Internet and made good use of it. He liked to _______ the World Wide _____ and

used the Internet to communicate with computer programmers all over the world. When he went to university he studied IT (information __________) and developed a special interest in ________ intelligence. After developing special __________ of the computer, he hopes to design an _________ robot which can

think ________ and look like a human being, but in ______ he has a long way to go.

Step II:

Grammar

The Present Perfect Passive Voice

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。

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。

2) 现在完成进行时

(have/has + been + 现在分词)

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)

如: The work is done during two days.

2) 一般过去时的被动语态

(was/were+ 过去分词)

如: 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)

如: 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)

如: The bridge is now being constructed.

5) 现在完成时的被动语态

(have/has +been + 过去分词)

如: 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)

如: This can be done in a few minutes.

7) 动词不定式的被动式

(to be + 过去分词)

如: It is an honor for me to be asked to speak here.

Step III: Homework Try to remember the grammar rules and do exercises 1, 2 and 3 on page 21.