[Modal auxiliaries] Polite Requests with You as the Subject (will,would, can and could)

Polite
Same high	Would you pass the salt (please)?	However, is often determined by the speaker’s tone of voice.
	Could you pass the salt (please)?
	Will you (please) pass the salt?
inpolite	Can you (please) pass the salt?
	Incorrect: May you pass the salt?	May is used only with I or we in polite requests

Typical responses

Yes, I’d be happy to..	formal
Certainly.	formal
Sure	informal