Giáo án Tiếng Anh lớp 11: UNIT 11 SOURCES OF ENERGY-SPEAKING ppsx

OBJECTIVES: Aims: - Getting students to give reasons the of using alternative sources of energy and talk about the advantages and disadvantages of alternative sources of energy.. 2.How m

UNIT 11 SOURCES OF ENERGY

PART B: Speaking

I OBJECTIVES:

Aims:

- Getting students to give reasons the of using alternative sources of energy and talk about the advantages and disadvantages of

alternative sources of energy

Vocabulary: abundant, enormous, plentiful, renewable, convenient, polluted, limited, non-renewable, exhausted

Expressions : I think/believe that …

Why do you think so?

I know it is … However, it is … Teaching aids: some pictures about the alternative sources of energy II.PROCEDURE

T Contents T & S’activities

I) WARM UP: (5 minutes)

.1 Can you tell me some sources of

energy?

2 Which source of energy is the most

popular in Vietnam? Is it clean or

polluted? Is it limited or unlimited? Is it

safe or dangerous?

*Suggested answers

1 fossil fuels, solar energy, wind

energy, water energy, …

2 Fossil fuels are perhaps the most

popular This kind of energy is polluted

and limited

II.Check up:Answer the questions:

1.What is major sources of energy?

2.How many sources of energy are

mentioned in the text , and which one

 Teacher asks these questions one after another and has students discuss with their partners before giving answers

 Students may discuss the questions with their partners to find out the answers

-T calls Ss to bb and Ss answer the questions

Teacher sticks the pictures

do you think has the most potential?

II) PRE-SPEAKING (5 minutes)

1 Wind energy

2 Solar energy Picture A

: Solar energ 3 Geothermal energy

Picture B : Wind energy

5 Nuclear energy Picture

C : Fossil fuel (oil)

4 Fossil fuel (coal)

6 Water gy ener

Picture D : Water energy

Picture E : Fossil fuel (coal)

7 Fossil fuel (oil)

Picture

on the board or shows them on the projector Ask students to match the

following words with each picture:

Students may discuss the pictures with their partners before giving answers

 wind energy

Picture B

F : Geothermal energy

Picture G :

Nuclear energ

Picture A:

Solar energy

Picture C

fossil fuel (oil)

Picture E

 water energy

Picture D

Picture F

Picture G

 geothermal energy

II) WHILE-SPEAKING: (20 - 25

minutes)

Task 1:The following statements list

some advantages and disadvantages of

various sources of energy Read and

tick( THE APPROPRIATE BOX a (

 nuclear energy

Teacher has students work

in pairs reading the information in the table and then discussing the advantages and

disadvantages After that, have some pairs report their work in front of the class The teacher gives comments if necessary

Students work in pairs and then report their answers

For advantages) Or D( for

disadvantages ) then compare the result

with a partner’s

.1 Fossil fuels will be exhausted within

a relatively short time

2 Geothermal heat is available only

in a few places in the world

3 If the wind does not blow, there is

no wind energy

4 Water power provides energy

without pollution

5 A nuclear reactor releases

radiation which is dangerous to the

environment

6 Solar energy is not only plentiful

and unlimited but also clean and safe

7 It is expensive to build a dam for

to the class by reading them aloud

 Teacher should have students practise speaking these words first:

 T has students read the example in Task 2 (page 128) then act out and role-play with one or two students

hydroelectricity

Suggested answer:

1 D 2 D 3 D 4

A 5 5 D 6.A 7

D

Task 2: Talk with your friend about the

advantages and disadvantages of using

each alternative source of energy , using

the suggestion from Task 1

*Useful language

Enormous Dangerous

Plentiful Polluted

Available Exhausted

Unlimited Limited

Renewable Non-renewable

Convenient Unsafe

 Students practice in pairs:

Model:

A I think / believe that wind power can

be an alternative source of energy

B Why do you think / believe so?

A Because our major sources of energy

are running out while the wind is

abundant and unlimited

B I know it is also clean and safe to

environment

However, it is not available when there

is no wind

A I think that nuclear power can be an

alternative source of energy

B Why do you think so?

A Because our major sources of energy

are running out while

the nuclear power is unlimited

 Teacher should ask them to pay attention to the expressions:

 Have students work in pairs practising the

dialogue and changing the sources and using the words given to give the reasons

B I know it can provide enough

electricity for the world’s needs for

hundreds of years However, a nuclear reactor releases radiation which is

dangerous to the environment

A I believe that solar energy can be an alternative source of energy

B Why do you believe so?

A Because our major sources of energy are running out while the sun releases large amount of energy every day

B I know it is not only plentiful and

infinitive but also clean and safe

However, it is only possible during the day time

A I think that water power can be an

alternative source of energy

B Why do you think so?

A Because our major sources of energy

are running out while the wind is

unlimited

B I know water power provides energy

without pollution However, it is

expensive to build a dam for

hydroelectricity

A: I think that more and more people

will use the solar energy

B: Why do you think so?

A: Because it’s available, unlimited and

Teacher has students work

in groups to prepare a report on which source they think is the most potential Then ask the representative of some groups to report to the class Give comments and correct mistakes where

easy to use

C: But it’s expensive and we can only

have it at specific time of the year

A: I hope that the progress of science

and technology will help to overcome

this problem

B: That’s right and then we don’t have

to worry about the shortage of energy

C: And our life will be more

comfortable with cheap simple devices

run on the solar energy

I think that …

I believe that …

Why do you think so?

I know it is … However, it is …

necessary

Task 3:Express your belief on the

increasing use of alternative sources in the future , Using the ideas from Task 2 .IV) POST SPEAKING: (5 minutes)

 Teacher has each students write a short description of several alternative sources of energy Ask some of them to read their description to the class

V) Homework

-do all the exercises again and prepare the part : Listening