外研版高中英语第一册 (必修1)(精)

外研版高中英语第一册（必修1）

Module 5 In a lab Grammar(1)

By Huang Guiping from No. 1 Senior High School

Teaching Aims:

Enabling the students to master the usages of Degrees of Comparison. Teaching content:

1) Degrees of comparison.

2) Special usages and additional information.

Teaching Important and Difficult Points:

How to enable the students to master the usages of Degrees of Compariso n. Teaching Methods:

1) Inductive methods;

2) Pair-work, drill and discussion.

Teaching Aids:

1) PowerPoint.

2) The blackboard.

3) Projector.

Teaching procedures:

Step I Lead-in

Greetings: Greet the whole class as usual.

Look and Guess:

① Two heads are better than one.

② More haste, less speed.

③ East, west, home is best.

④ The best mirror is an old friend.

⑤ Least talk, most work.

T: Look at these proverbs on the screen and try to find their similarities.

S: They are all including degrees of comparison.

T: Yes, you’re right. Now please open your textbook on Page 41 and look at Activity1—(7), pay attention to these two sentences, and we have known that b is right, but these two sentences both told us two grammatical rules of degrees of comparison, please bear this in mind and we are going to learn more.

StepⅡ. Warming up and consolidation

Ok, first please look at the information in the chart below, work on your own and complete the sentences. (Show them on the screen)

Example: The earth has half as many moons as Mars.

1. Jupiter is ______________________________________ than the earth.

2. Jupiter is ______________________________________ from the sun than the

earth.

3. Saturn is ______________________________________ than Mars.

4. Mars is _______________________________________ earth.

5. Saturn is nearly _________________________________ Jupiter.

Suggested answers:

1. Jupiter is eleven times larger than the earth.

2. Jupiter is five times further from the sun than the earth.

3. Saturn is twenty times bigger than Mars. / Saturn is twenty times

the size of Mars.

4. Mars is half as big as earth. / Mars is half the size of earth.

5. Saturn is nearly as big as Jupiter.

Step Ⅲ. Principles

T: Call back the answers from the students.

On the basis of the answers, stimulating the students to find the principles in them.

Ask several students to give their opinions and at the same time list them on the blackboard.

倍数的三种表达法：

1）. 倍数+as+形容词原级+as+ 对比成分

2）. 倍数+形容词比较级+than+对比成分

3）. 倍数+the size (length, width, depth, height) of+对比成分

Give more examples to consolidate the rules. (On PowerPoint)

1. After the new technique was introduced, the factory produced _______ cars

in 1999 as the year before.

A. as twice many

B. as many twice

C. twice as many

D. twice many as

2. At a rough estimate, Nigeria is _______ Great Britain.

A. three times the size as

B. the size three times of

C .three times as the size of D. three times the size of

3. It is reported that the United States used _________ energy as the whole

of Europe.

A. as twice

B. twice much

C. twice much as D .twice as much

4. He speaks English well indeed, but of course not ________ a native speaker.

A. as fluent as

B. more fluent in

C. so fluently as

D. much fluently than

5. Our neighbor has ________ ours.

A. as a big house as

B. as big a house as

C. the same big house as

D. a house the same big as

Suggested answers: