People speak English here.
English is spoken here (by people)
Gustave Eiffel built the Eiffel Tower in 1887
The Eiffel Tower was built in 1887 by Gustave Eiffel.
Someone has sent John a mysterious letter.
A mysterious letter has been sent to John by someone.
The Chinese invented gunpowder.
Gunpowder was invented by the Chinese.
In the future we will explore new planets.
New planets will be explored in the future.
They cut down thousands of trees every day
Thousands of trees are cut down every day.
The police arrested five thieves yesterday.
Five thieves were arrested yesterday.
Many people have seen the UFO in this area.
The UFO has been seen by many people in this area.
My cat kills 10 mice each week.
10 mice are killed by my cat each week.
Scientists will develop new sources of energy.
New sources of energy will be developed by scientists.
Bees sting humans all summer.
Humans are stung by bees all summer.
They invented the TV in the 20th century
The TV was invented in the 20th century.
Tim has already used the new computer.
The new computer has already been used by Tim.
A blue car ran over my dog.
My dog was run over by a blue car.
Humans will never stop pollution.
Pollution will never be stopped.
Smoking kills millions of people every year.
Millions of people are killed by smoking every year.
The doctor told my father to stop smoking.
My father was told to stop smoking by the doctor.
She has written a test today.
A test has been written today by her.
We have bought the tickets for the concert.
The tickets for the concert have been bought by us.
Companies will invent new devices to store energy.
New devices to store energy will be invented by companies.
New devices will be invented by companies to store energy.
Factories dump tons of waste in the sea.
Tons of waste are dumped into the sea by factories.
The police gave her the bad news yesterday.
The bad news was given to her yesterday by the police.
You have made a lot of mistakes.
A lot of mistakes have been made by you.
Pollution will destroy our planet.
Our planet will be destroyed by pollution.
They will discover a cure for cancer.
A cure for cancer will be discovered.