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11 EDIT. Read the paragraph. Find and correct seven more errors with passives.

Three Gorges Dam: Success or Failure’?

Construction on the Three Gorges Dam! on the Yangtze River began in 1994. It y

completed in 2012. The dam is considered a great success because it has had some positive
effects on the environment. In the past, a lot of coal is used for energy. Now, the dam

generates water power, and the need for coal has been reduced. This means that there is
less carbon dioxide in the air. Unfortunately, there have also been some negative effects.

Many places were flood because of the dam. Over a million people had to being moved.
Also, the dam located in a region with many plants and animals. Many plant species in

this region have being harmed by the dam. More could be harm in the future. The dam
has also caused changes to the temperature and increased the amount of pollution in

the water. This has been threatened the freshwater fish in the area. Changes should been
made to improve the situation soon. Authorities have promised to make these changes.

1 dam: special walls built across rivers to stop the water from flowing; used to create electricity

12 APPLY.

A Work in a group. Discuss some environmental problems that you know about. Make a chart
in your notebook like the one below and write notes for each category.

Problem Cause Changes in What Should Be
Environment Done?
river in my town chemicals from | fish and plants make rules that
has been polluted| nearby factory | are dying control how
factories get rid
of chernical waste

B_ In your notebook, write five sentences about one of the problems your group discussed. Use
the passive and the verbs in the box or your own ideas.

damage endanger improve poison preserve
destroy harm limit pollute rescue

Cc Exchange sentences with someone from a different group. Ask each other questions to
learn more.

A: Are any steps being taken to clean up the river?

B: Yes, the harmful chemicals are being removed with special equipment.
A: Have all the fish been killed?

B: No, some species have survived.

UNIT9 LESSON1 245
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