Download - PPT - CBI by Aphithak Chanla
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What kind of energy source do you see in this song?
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Positive
Comparative
Superlative
cold colder coldesthot hotter hottestbig bigger biggestwarm warmer warmestlarge larger largestexpensive
more expensive
the most expensive
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Positive
Comparative
Superlative
good better bestbad worse worstlittle less lestmany more most
Here are some irregular adjectives.
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Comparative form (a) Short adjectives With short adjectives, we make
comparative form by adding –er to the stem.
The cheaper plates are over therecomparative
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(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
comparative
comparative
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Superlative form(a)Short adjectivesFor the superlative form, we add –est to the stem. Rutland was the smallest county in
Britain.Superlative
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(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 playerSuperlative
Superlative
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ListeningListening
SpeakingSpeaking WritingWriting
ReadingReading
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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.
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The scientists have The scientists have never begun to never begun to investigate fuel investigate fuel
producing plants.producing plants.The energy from plants The energy from plants
is renewable.is renewable.
The energy which green The energy which green plants supply is useless.plants supply is useless.
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Scientists have always Scientists have always been interested in been interested in
plants which produce plants which produce food like grain or fruit.food like grain or fruit.Water hyacinth is fast-Water hyacinth is fast-growing weed which growing weed which
grows in brackish grows in brackish water.water.
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1
2
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1
2
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Activity 2Activity 2Read the text Read the text
and answer the and answer the questionsquestions.. What What
does the does the reference word reference word
refer to?refer to?
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1.It’s not difficult 1.It’s not difficult to see…..(line 2)to see…..(line 2)
Green Green plantsplants
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2. It is renewable. 2. It is renewable. (line 5)(line 5)
Green Green plantsplants
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3. They are looking 3. They are looking at quick-at quick-
growing….. (line growing….. (line 18)18)
ScientistsScientists
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4. It costs nothing 4. It costs nothing to produce. (line 4)to produce. (line 4)
Green Green plantsplants
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5. But, most 5. But, most important of all.important of all.
(line 4)(line 4)
PlantsPlants
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Activity 3Activity 3Think of energy Think of energy
source from source from plants that you plants that you
know and present know and present in front of the in front of the
class.class.
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ExampleExample Corn is raw Corn is raw material to produce material to produce
ethanol. It’s not ethanol. It’s not expensive. Moreover, expensive. Moreover,
we use corn cob to we use corn cob to produce electricity produce electricity
energyenergy..
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Activity 4Complete
each sentence with a
comparison.
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1. Scientists have helped framers to produce _______
and ________ crops from these plants. (large)
larger larger
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2. Breeding new plants whish produce ______
crops and which resist disease ______ . (heavy,
good)
heavier
better
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3. Giant kept is one of the world’s
______ -growing plants. (fast)
fastest
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4. It was never a pleasant beach, but the oil
made it _______. (dirty)dirtier
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5. Today we use ______ electric energy than energy from plants.
(many)
more
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6. Energy from coal is the ____________(expensive)most expensive
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7. Water hyacinth is a ______ growing in
fresh water than sugar cane. (fast)
faster
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8. The energy from green plant the __________
of all energy from plant. (important)
most important
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