energy
TRANSCRIPT
Last slide
• Renewable sources : sources which will last forever.
• Non-renewable sources: sources which will run out.• Solar energy : energy that comes from the sun.• Hydroelectricity : electricity which is produced
from water.• Geothermal : energy from the inside of the earth.
• Windmills : fans which spin to produce electricity.• Fossil fuels : oil, coal and natural gas.
Match the picture with the sentence:
• We get fossil fuels from dead animals and other creatures.
• We get solar energy from the sun.
• Windmills can generate energy from the wind.
• We get hydroelectricity from falling water.
1 2
3 4
Grammar: The Present Simple tense:
• The present simple tense is used :• 1- To express an action that happens again and
again; a habit.
• E.g.: I go to work at 7 o’clock. • 2- To express a fact which is always true.• E.g.: Water is a renewable form of energy.• 3- To express a fact which stays the same for a long
time; a state.
• E.g.: I prefer coffee to tea.
Adverbs of frequency with the present simple
• 1- We often use adverbs of frequency with the present simple
• 2- Adverbs of frequency go before the main verb, but after verb “to be”
• E.g. I always try to save energy.
• He is usually in a hurry.
never
0%
rare
ly 2
0%
not o
ften 2
5%
som
etim
es 5
0%
often 7
5%
usual
ly 8
5%
alw
ays
100%
The present tenses in passive
• The present tenses can be changed into the passive when the action is more important than the person who is doing it.Present simple:Active: Somebody cleans this room everyday.Passive: This room is cleaned everyday.Present continuous:Active: Somebody is cleaning the room.Passive: The room is being cleaned.
PrefixesPrefixes are used to change the meaning of a
word.
To eat too muchovereatTo muchover
A small taximinicablittlemini
In the middle of the skyMid-airmiddlemid
Between nationsinternationalbetweeninter
To work with somebodycooperatewithco
Something in the body that fights disease.
antibodyagainstanti
Meaning of wordExample word
MeaningPrefix
• 1- Coal, oil and natural gas are all ………• a) hydroelectric b) fossil fuels c) nuclear d) solar energy
• 2- Renewable sources of energy will never ……….• a) last b) run over c) run away d) run out
• 3- Almost all of our energy comes originally from the …………..
• a) Moon b) Mars c) sun d) Equator
• 4- People use the wind to make …………….• a) electricity b) fossils c) farms d) fuels
• 5- The heat inside the earth can be used to generate electricity. It’s called ………………
• A) fossils b) turbines c) geography d) geothermal
• 1- He ………goes to work late.• A) don’t b) doesn’t c) hasn’t d) never• 2- She ……….clever and full of enthusiasm.• A) always is b) is always c) has never d) had• 3- What he is saying ………..by anyone.
• A) understood b) isn’t understood• C) understand d) doesn’t understand• 4- I go to work by bus nowadays. My car ……….at
the mechanic’s.• A) is mended b) is mended • C) is being mended d) has mended
Rewrite the following sentences:
• 1- I respect his beliefs. (believes)• I respect what he believes in.• 2- We use solar energy to generate electricity.
(Solar energy)
• Solar energy is used to generate electricity.
• 3- She never tells lies. (honest)
• She is always honest.• 4- We don’t believe what he said. (isn’t)• What he said isn’t believed. • 5- I always eat too much when I’m in a party. (overeat)• I always overeat when I’m in a party.