In active sentences, the focus is on a person or a thing that does the action.
correct
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The children have cleaned the house.
The house has been cleaned by the children.
Nowadays most people _______ in the lowlands. (live)
Nowadays most people live in the lowlands.
In passive sentences, the focus is on the action itself or on the thing that the action affects.
Correct
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We often use the passive if we know who did the action, or if is important who did the action.
Incorrect
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Our readers will be fascinated by the information.
The information will fascinate our readers.
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Today, the country _______ officially as the Republic of (know) the Philippines.
Today, the country is known officially as the Republic of the Philippines.
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It is thought that the ancient Egyptians had advanced knowledge of geometry. a. I think that the ancient Egyptians had advanced knowledge of geometry. b. People think that the ancient Egyptians had advanced knowledge of geometry.
b. People think that the ancient Egyptians had advanced knowledge of geometry.
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We can't make negatives and questions in the usual way with the negative form or the question form of the verb to be.
Incorrect