Perhaps is used to mean possibly or maybe, or as a polite way to give advice or make a suggestion.
(adverb)
- When someone asks if you are going to attend a party and you are not yet sure, this is an example of a time when you might say "perhaps I will go."
- When you want to politely suggest to someone that they change their shirt, this is an example of a time when you might say "perhaps you would like to change your shirt."