Present Perfect Continuous Spotlight-7

Acid rains

Spotlight7 8a

ex2b

• far away
• but
• also
• some
• our + N

• carry far away
• acid rain/fog, snow
• as well …/… too
• any (-/?)
• ours

burn / emit

burn coal

burn petrol

emit fumes

the oxygen + water = acid rain

acid rain

acid fog

acid sleet

Acid rains …

• harm
• kill
• wipe out
• poison
• cause

fish

plants

animals

damage

soil

Present Perfect Continuous

The governments have been trying to reduce the air pollution that causes acid rain.

Are they doing this now?

Yes.

Did they start doing this in the past?

Yes.

Present Perfect Continuous

Some industries have been using new technologies for some time to help make factory smoke less harmful to the environment.

Are they doing this now?

Yes.

Did they start doing this in the past?

Yes.

Present Perfect Continuous

action started in the past

and

is still tak ing place

Present Perfect Continuous

have been

+ V ing

has been

(3 person singular)

has been