Grammar第二课时教案

Module 5

A lesson

in

a

Lab

Grammar Degrees of comparison

----by Gaojie

Teaching goals

1. Target language

a. Words and phrase

size, height, length, weight, width, depth, age, as...as b. Sentence

The earth is forty-nine times larger than the moon. P43 The earth is forty-nine times as large as the moon. P43 It’s getting brighter and brighter! P47 The closer you are, the more you’ll see. P47 The more books I read, the more information I learn. P47 2. Ability goals

Enable the students to review the variation rule of comparison and learn degrees of comparison 3. Learning ability goals

Help the students solve some simple maths problems to practice the degrees of comparison. Teaching important points

The usages of the comparative degree. Teaching difficult points

Help the students pay attention to the agreement in comparison objects. Teaching methods

Question-answer and discussion.

Teaching aids

A computer and a projector.

Teaching procedures & ways

Step Ⅰ

Revision For the homework, check whether they can say the variation rule of comparison correctly. If they have any problems about this part, help them. And the read a table about the variation rule of comparison. Step Ⅱ

Lead-in Show a picture and ask “ Who moved my cheese?”

and give them a clue of the thief and count the age of the thief, then catch he. T: Today, we’ll learn the degrees of comparison. At first, let’s look at the screen and guess: How old is the thief? Clue: The thief is five times younger than me. Two years ago, I was as old as my sister is. My sister is eighteen years old now. Students give their answers. And teacher corrects some mistakes if there are any. Answer: the thief is only four. T: From these sentences, we know that

Degrees of Comparison is used in all these sentences. Today, we’ll learn some of them.

Step Ⅲ

Degrees of comparison 1 (P43)

In this step, the students will finish Activity 1 and Activity 2 on page 43. Task 1: Activity 1 Let the students give some sentences that they have learned with the comparative degree in. And then turn to page 43 and read the first two sentences in Activity 1. Ask them to tell the difference between these sentences. T: Can you give me some sentences with the comparative degree in them? S1: The earth is larger than the moon.

S2: Tom is fatter than Mike. S3: She is more beautiful than her sister. T: Right. What’s the difference between these sentences and the one on the blackboard? Write the sentence on the blackboard:

The earth is forty-nine times larger than the moon.

S4: There are “forty-nine”

times before the word “larger”. T: Right. That’s what we’ll learn today. When we want to express degrees of comparison, we can use this structure. A is ... times larger (bigger, taller, higher, wider, longer etc.) than B. Write down the structure on the blackboard. T: It’s very simple; just add “... times”

before the comparative degree. But please note that we say “twice”

instead of “two times”. Are you clear? Ss: Yes.

T: Now, let’s do some easy maths problems. Listen! If Object A is 10 meters long, and Object B is twice longer than Object A, how long is Object B? S5: Twenty meters long. T: Good. You’ve understood the structure correctly. The second problem: if Object A weighs 100 kilogrammes, and Object B is four times heavier, how heavy is Object B? S6: 400 kilogrammes. T: Why? S6: Because Object B is four times heavier than Object A. T: OK. Besides this structure, we can use another structure to express the same meaning. That is: A is ... times as large (big, tall, long etc.) as B. Write down the structure on the blackboard. T: Well, let’s go on to do some maths problems. Task 2: Activity 2 Read the instruction of Activity 2, and let the students read the sentences in Example. After that, ask them to finish the following 5 problems. T: The purpose of the task is not to check your intelligence, because I believe that all of you have high IQ. It’s about the uses of the two structures we’ve just learnt. Now, finish the task and then check your answers with your partners. Remember you must use both of the structures to practice what we’ve just learned. After a while, ask four students to read out their answers in complete sentences. S1: I think winter in Harbin is four times colder than Beijing. Or, winter in Harbin is

four times as cold as Beijing. T: The structure is right, but there are mistakes in the two sentences. Who can correct the mistakes and read out a complete sentence? S2: It should be “Winter in Harbin is four times

colder than that in Beijing.”

T: Right. When we are using the comparative degree，we must pay attention to the two comparison objects. Now who would like to do the third one? S3: Miss Wu, can we say that “in winter the temperature of Harbin is four times lower than in Beijing”?

T: That’s a good sentence, but also you should pay attention to the two comparison objects. We should say that “In winter the temperature of Harbin is four times lower than that of Beijing.”

Write down the two sentences on the blackboard, so that the students can clearly know the agreement in two comparison objects. T: Are you clear? OK, how about the third problem? S4: I think Mount Qumolangma is about six times higher than Mount Tai. Or, Mount Qumolangma is about six times as high as Mount Tai. S5: My aunt’s house is twice as large as my house. Or, my aunt’s house is twice larger than my house. S6: Tom weighs over twice as heavy as Lily. Or, Tom is over twice heavier than Lily. Step Ⅳ

Degrees of comparison 2 (P47)

Task 1: Activity 1 T: Now, please finish the sentences on the screen, using proper words and the structure. Show the sentences on the screen. bright dark

heavy

weak

fat 1. When the sun rises, it is getting _______. 2. When the sun sets, it’s getting _______. 3. When the rush hour comes, the traffic is getting _______. 4. After suffering a long disease, he is getting _______. 5. She likes to eat sweet, and these days she is getting _______.

Read out the first part of each sentence, and let the students read and finish the second part of the sentence. Sample answers: 1. brighter and brighter 2. darker and darker

3. heavier and heavier 5. fatter and fatter

T: Now, we are going to learn another structure. Suppose you save a millionaire’s life, and he offers you money to thank you, and asks you: “How much do you want?”

And suppose you are a greedy person. What will you say? S1: The more, the better. T: Yeah, you are so clever. It’s a real bargain. But if he also wants you to share his pains, and asks you “How much do you want?”, what will you say? S2: The less, the better. T: Ha! You’re clever. But there can’t be such an easy thing in the world. No pains, no gains. If you gain what you shouldn’t gain, that would be a disaster. Now, please look at the three sentences on the screen: 1. It’s getting brighter and brighter! 2. The close you are, the more you’ll see. 3. The more books I read, the more information I learn. T: Do you know the meanings of these sentences? Ss: Yes. T: OK, now, please answer my questions. Question 1: Which of these structures is used to say that something is changing? S3: All of the structures are used to say that something is changing. T: Question 2: Which of these structures is used to say that things change / are changing together? S4: The second and the third ones are used to say that things change / are changing together. T: Question 3: Which structure repeats the same adjective? S5: The first one repeats the same adjective.

4. weaker and weaker

T: Good. Now, let’s practice the structure. Please look at Activity 2 on page 47. Use the words below to write sentences as in the example. Who would like to finish Sentence 1? S6: The hot metal gets bigger and bigger. S7: Miss Wu, can we say that “The hot metal is getting bigger and bigger.”?

T: I think you can do it. They have the same meaning. Now, let’s finish the next three sentences. Can you three finish the sentences one by one? S: ... By now the students have learned 4 structures about degrees of comparison, including:

1. The earth is forty-nine times as large as the moon. 2. The earth is forty-nine times larger than the moon. 3. It’s getting brighter and brighter. 4. The closer you are, the more you’ll see. Show the sentences on the screen to let the students have a revision. Step V Homework 1.

review the structures about degrees of comparison

2.

page91 Grammar:Activity1,2