Present
Present and Past Continuous
Past Simple
Present Perfect
Future: "going to" and "will"
100

The artist paints beautiful portraits.

Beautiful portraits are painted by the artist.

100

Scientists are researching a cure for the common cold.

A cure for the common cold is being researched by scientists.

100

After years of training the athlete won a gold medal.

After years of training a gold medal was won by the athlete.
100

I already have eaten breakfast.

Breakfast has already been eaten by me.

100

The city is going to build a new park.

A new park is going to be built by the city.

200

The gardener waters the flowers every morning.

The flowers are watered every morning by the gardener.

200

The children were playing football in the park.

Football was being played in the park (by the children).

200

The intrepid explorer navigated uncharted rivers and dense forests.

Uncharted rivers and dense forests were navigated by intrepid explorer.

200

We have finished the project ahead of schedule. 

The project has been finished ahead of schedule.

200

They won't release the new movie until the summer.

The new movie won't be released until the summer.

300

My brother builds amazing Lego models in his free time.

Amazing Lego models are built by my brother in his free time.

300

Developers are currently developing a new product line to meet increasing market demand.

A new product line is being developed by developers to meet increasing market demand.

300

Archaeologists discovered a remarkably well-preserved tomb in the Valley of the Kings.

A remarkably well-preserved tomb in the Valley of the Kings was discovered by archaeologists. 

300

The scientists have discovered a new species of insect.

A new species of insect has been discovered.

300

My parents are going to buy a new car.

A new car is going to be bought by my parents.

400

Tourists visit the Eiffel Tower year-round. 

The Eiffel Tower is visited by tourists year-round.

400

Someone was cooking dinner when the phone rang.

Dinner was being cooked when the phone rang.

400

The author published a controversial novel that sparked public debate.

A controversial novel, that sparked public debate, was published by the author.

400

I have lost my keys again.

My key have been lost again (by me).

400

Cara won't visit us until the end of the month.

We won't be visited by Cara until the end of the month.

500

The chef prepares a delicious meal for us each evening.

A delicious meal is prepared for us by the chef each evening.
500

My friends were interrupting me while I was studying for my exam

I was being interrupted by my friends while I was studying for my exam.

500

The composer debuted a groundbreaking symphony that challenged traditional musical conventions.

A groundbreaking symphony, that challenged tradition musical conventions, was debuted by the composer.

500

They have learned a lot about marine biology this semester.

A lot about marine biology has been learned (by them) this semester.

500

The teacher will check your homework at the beginning of class.

Your homework will be checked by the teacher at the beginning of class.