used as a polite way of asking for something or telling somebody to do something

used to add force to a request or statement

Please, I don't understand what I have to do.

used as a polite way of accepting something

‘Would you like some help?’ ‘Yes, please.’

used to ask somebody to stop behaving badly

Children, please! I'm trying to work.

used when you are replying to somebody who has said something that you think is stupid

Oh, please! You cannot be serious.

often used after as or what, where, etc. to mean ‘to want’, ‘to choose’ or ‘to like’ to do something

You may stay as long as you please.

She always does exactly as she pleases.

I'm free now to live wherever I please.

LEARNit Dictionary