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.