Change to active voice
1)A man was noticed entering our premises
Answers
a sentence using active voice, the subject of the sentence performs the action expressed in the verb. In a sentence using passive voice, the subject is acted upon. Examples:
a. active voice: The police officer arrested the man.
(The police officer is the subject of the sentence and is performing the action of arresting.)
b. passive voice: The man was arrested by the police officer.
(The man is the subject of the sentence but he is not performing the action of arresting.)
A shortcut to try and identify passive construction in your writing is to look for an extra “be” verb (is, are, was, were) and the word “by”.
a. active voice: The police officer arrested the man.
b. passive voice: The man was arrested by the police officer. The man was arrested.
Answer:
If you want to change a passive-voice sentence to active voice, find the agent in a "by the..." phrase, or consider carefully who or what is performing the action expressed in the verb. Make that agent the subject of the sentence, and change the verb accordingly. Sometimes you will need to infer the agent from the surrounding sentences which provide context.