What kind of energy source do you see in this song?

Positive Comparative

Superlative

cold colder coldesthot hotter hottestbig bigger biggestwarm warmer warmestlarge larger largestexpensive

more expensive

the most expensive

Positive

Comparative

Superlative

good better bestbad worse worstlittle less lestmany more most

Here are some irregular adjectives.

Comparative form (a) Short adjectives With short adjectives, we make

comparative form by adding –er to the stem.

The cheaper plates are over there

The cheaper plates are over there

comparativecomparative

(b) Long adjectivesWith long adjectives, we put more before the adjective.

It’s more expensive to travel on Friday

It’s more dangerous on the southern slope

It’s more expensive to travel on Friday

It’s more dangerous on the southern slope

comparativecomparative

comparativecomparative

Superlative form(a)Short adjectivesFor the superlative form, we add –est to the stem.

Rutland was the smallest county in

Britain.

Rutland was the smallest county in

Britain.Superlative

(b)Long adjectivesWith long adjectives we put most before the adjective.

Who is the most beautiful girl in the world?

Rory Underwood is England’s most successful rugby player

Who is the most beautiful girl in the world?

Rory Underwood is England’s most successful rugby playerSuperlative

SuperlativeSuperlative

ListeningListeningListeningListening

SpeakingSpeakingSpeakingSpeaking WritingWritingWritingWriting

ReadingReadingReadingReading

Activity 1Activity 1Listen “The energy Listen “The energy from plants” and from plants” and circle T (true) or F circle T (true) or F

(false). For the (false). For the sentences you sentences you

marked false, give marked false, give the correct the correct

information.information.

The scientists have never The scientists have never begun to investigate fuel begun to investigate fuel

producing plants.producing plants.

The scientists have never The scientists have never begun to investigate fuel begun to investigate fuel

producing plants.producing plants.

The energy from plants is The energy from plants is renewable.renewable.

The energy from plants is The energy from plants is renewable.renewable.

The energy which green The energy which green plants supply is useless.plants supply is useless.The energy which green The energy which green plants supply is useless.plants supply is useless.

Scientists have always Scientists have always been interested in plants been interested in plants which produce food like which produce food like

grain or fruit.grain or fruit.

Scientists have always Scientists have always been interested in plants been interested in plants which produce food like which produce food like

grain or fruit.grain or fruit.

Water hyacinth is fast-Water hyacinth is fast-growing weed which growing weed which

grows in brackish water.grows in brackish water.

Water hyacinth is fast-Water hyacinth is fast-growing weed which growing weed which

grows in brackish water.grows in brackish water.

11

22

11

22

Activity 2Activity 2Read the text and Read the text and

answer the answer the questionsquestions.. What What

does the reference does the reference word refer to?word refer to?

1.It’s not difficult to 1.It’s not difficult to see…..(line 2)see…..(line 2)

1.It’s not difficult to 1.It’s not difficult to see…..(line 2)see…..(line 2)

Green plantsGreen plantsGreen plantsGreen plants

2. It is renewable. 2. It is renewable. (line 5)(line 5)

2. It is renewable. 2. It is renewable. (line 5)(line 5)

Green plantsGreen plantsGreen plantsGreen plants

3. They are looking 3. They are looking at quick-growing….. at quick-growing…..

(line 18)(line 18)

3. They are looking 3. They are looking at quick-growing….. at quick-growing…..

(line 18)(line 18)

ScientistsScientistsScientistsScientists

4. It costs nothing to 4. It costs nothing to produce. (line 4)produce. (line 4)

4. It costs nothing to 4. It costs nothing to produce. (line 4)produce. (line 4)

Green plantsGreen plantsGreen plantsGreen plants

5. But, most 5. But, most important of all.(line important of all.(line

4)4)

5. But, most 5. But, most important of all.(line important of all.(line

4)4)

PlantsPlantsPlantsPlants

Activity 3Activity 3Think of energy Think of energy

source from plants source from plants that you know and that you know and present in front of present in front of

the class.the class.

ExampleExample Corn is raw Corn is raw material to produce material to produce

ethanol. It’s not ethanol. It’s not expensive. Moreover, we expensive. Moreover, we use corn cob to produce use corn cob to produce

electricity energyelectricity energy..

Activity 4Complete each sentence with a comparison.

1. Scientists have helped framers to produce _______

and ________ crops from these plants. (large)

1. Scientists have helped framers to produce _______

and ________ crops from these plants. (large)

largerlarger largerlarger

2. Breeding new plants whish produce ______ crops

and which resist disease ______ . (heavy, good)

2. Breeding new plants whish produce ______ crops

and which resist disease ______ . (heavy, good)

heavierheavier

betterbetter

3. Giant kept is one of the world’s

______ -growing plants. (fast)

3. Giant kept is one of the world’s

______ -growing plants. (fast)fastestfastest

4. It was never a pleasant beach, but the oil

made it _______. (dirty)

4. It was never a pleasant beach, but the oil

made it _______. (dirty)dirtierdirtier

5. Today we use ______ electric energy than

energy from plants. (many)

5. Today we use ______ electric energy than

energy from plants. (many)

moremore

6. Energy from coal is the ____________(expensive)

6. Energy from coal is the ____________(expensive)

most expensivemost expensive

7. Water hyacinth is a ______ growing in

fresh water than sugar cane. (fast)

7. Water hyacinth is a ______ growing in

fresh water than sugar cane. (fast)

fasterfaster

8. The energy from green plant the __________

of all energy from plant. (important)

8. The energy from green plant the __________

of all energy from plant. (important)

most importantmost important