Please close the window before you leave.

Meaning: This means to ask someone to make the window no longer open by moving parts together before they go away from a place or person.

Choice of Words: Close means to make something no longer open by moving parts together. Window is an opening in a wall or roof that allows light and air to enter. Before means earlier than or in advance of a particular time or event. Leave means to go away from a place or person.

Alternative Expressions

Can you shut the window before you head out?

Meaning: This means to ask someone if they are able to close the window before they leave the room or building. It's like saying, Are you able to close the window before you go away from here?

Choice of Words: Can is a modal verb that indicates permission or ability. Shut is a synonym for close, meaning to block an opening. Window is a transparent opening in a wall or roof that allows light and air to enter. Before means to do something sooner than another action. Head out is an informal phrase that means to leave. When you put them together, "Can you shut the window before you head out?" is a polite request asking someone if they are able to close the window before they leave.

Would you mind closing the window on your way out?

Meaning: This means to ask someone if they would be bothered by closing the window as they leave the room or building. It's like saying, I am wondering if you would be bothered by closing the window as you go away from here.

Choice of Words: Would is a modal verb that indicates a polite request. Mind is a verb that means to be bothered or concerned about something. Closing is the present participle of the verb close, meaning to shut or block an opening. Window is a transparent opening in a wall or roof that allows light and air to enter. On your way out is a phrase that means as you are leaving. When you put them together, "Would you mind closing the window on your way out?" is a polite request asking someone if they would be bothered by closing the window as they leave.

Related Expressions