Writing with Tenses / Active & Passive Voice
When to Omit by
Omit an unknown, obvious, or unimportant doer. Someone, people, and workers often add no useful information in a passive sentence. Never require by in every passive.
Understand the idea
Omit an unknown, obvious, or unimportant doer. Someone, people, and workers often add no useful information in a passive sentence. Never require by in every passive.
Look closely
Someone stole my bicycle. → My bicycle was stolen.
Workers built this bridge in 2010. → This bridge was built in 2010.
TRY IT YOURSELF
A quick check
A wrong answer is a chance to learn. Use the hint and try again.