Active into Passive
Books
Discoveries
Inventions
100

He reads comics every day.

Comics are read by him every day.

100

Romeo and Juliet

Romeo and Juliet was written by William Shakespeare.

100

America

America was discovered by Christopher Columbus

100

Brothers Wilbur and Orville Wright built the first successful airplane

The first successful airplane was built by brothers Willbur and Orville Wright. 

200

We played volleyball yesterday.

Volleyball was played by us yesterday.

200

The Harry Potter books

The Harry Potter books were written by J.K.Rowling.

200

The law of gravity

The law of gravity was discovered by Isaac Newton.

200

Alexander Graham Bell invented telephone 

Telephone was invented by Alexander Graham Bell

300

My grandfather built this house in 1943.

This house was built by my grandfather in 1943.

300

Lord of the Rings

Lord of the Rings was written by J.R.R. Tolkein

300

Enrico Forlanini developed an unmanned helicopter powered by a steam engine.

An unmanned helicopter powered by a steam engine was developed by Enrico Forlanini.

300

In the late 18th century, the Montgolfier brothers invented the hot-air balloon which soon led to manned flights.

In the late 18th century, the hot-air balloon was invented by the Montgolfier brothers, which soon led to manned flights.

400

52 countries signed The Convention on International Civil Aviation, also known as the Chicago Convention, in Chicago, on 7 December 1944.

The Convention on International Civil Aviation, also known as the Chicago Convention, in Chicago, was signed by 52 countries on 7 December 1944.  

400

The Alchemist

The Alchemist was written by Paolo Coelho

400

In the 15th-century, several flying machine designs were created by Leonardo da Vinci.

Several flying machine designs were created by Leonardo da Vinci in the 15th-century.

400

In the 15th-century Leonardo da Vinci created several flying machine designs.

In the 15th-century, several flying machine designs were created by Leonardo da Vinci.