They will build the house next year.
The house will be built next year.
The cake is being baked by my mom.
My mom is baking the cake.
The package is delivered by the postman every morning.
Passive. (The subject "the package" is receiving the action.)
The teacher explains the lesson every day.
The lesson is explained by the teacher every day.
The documents have been signed by the manager.
The manager has signed the documents.
They built a new bridge last year.
Active. (The subject "They" is performing the action.)
She has written the report.
The report has been written by her.
The invitation was sent last week.
They sent the invitation last week.
The report will be submitted by John tomorrow.
Passive. (The subject "the report" is receiving the action.)
They are cleaning the windows right now.
The windows are being cleaned right now.
A song is being sung by the choir at the concert.
The choir is singing a song at the concert.
The car has been repaired by the mechanic.
Passive. (The subject "the car" is receiving the action.)
Someone must complete the project by Friday.
The project must be completed by Friday.
The problem will be solved soon. (They...)
They will solve the problem soon.
She reads books every evening.
Active. (The subject "She" is performing the action.)