Environment
the air, water, and land in or on which people, animals, and plants live
ENVIRONMENT
harmful substances in the air, often consisting of waste from vehicles or industry
AIR POLLUTION
to sort and collect rubbish in order to treat it and produce useful materials that can be used again
RECYCLE
an unnecessary or wrong use of money, substances, time, energy, abilities, etc.
WASTE
Used when the result will always happen.
Zero conditional
of or from the sun, or using the energy from the sun to produce electric power
SOLAR
process of not existing anymore
BECOME EXTINCT
not harmful to the environment, or trying to help the environment
ECO-FRIENDLY
a measurement of the amount of carbon dioxide that human activities produce
CARBON FOOTPRINT
She would travel all over the world if she were rich
Second conditional
fuels, such as gas, coal, and oil, that were formed underground from plant and animal remains millions of years ago
FOSSIL FUEL
an increase in the amount of carbon dioxide and other gases in the atmosphere
GREENHOUSE EFFECT
forms of energy that are produced using the sun, wind, etc., or from crops, rather than those using fuels such as oil or coal
RENEWABLE SOURCES
to waste a skill or opportunity
THROW AWAY
How do you form the third conditional?
if + past perfect, ...would + have + past participle
animals and plants that grow independently of people, usually in natural conditions
WILDLIFE
rain that contains large amounts of harmful chemicals as a result of burning substances such as coal and oil
ACID RAIN
Remove dirt, rubbish, debris, etc.
Clean up
to use all of something, so that nothing is left
USE UP
When do we use the third conditional?
to describe a situation that didn't happen, and to imagine the result of this situation
a very small amount compared to what is needed
A drop in the ocean
A problem that is controversial and difficult to solve
A hot potato
to trust someone or something or to expect him, her, or it to behave in a particular way
RELY ON
To be unable to understand a situation clearly because one is too involved in it
Can’t see the wood for the trees
Each one must make up a sentence using a different conditional
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