1.- FORMAL INVITATIONS
Inviting people to join you for dinner, social events, or other occasions is usually done using a formal expression to indicate the invitation.
USEFUL SENTENCES:
Would you like to + verb?
I'd like to ask you to + verb
It would be my pleasure if you would + verb
May I have the honour of your + name?
We are wondering if you would like to + verb
EXAMPLES:
Would you like to have dinner with us tonight?
May I have the honour of your presence to have dinner tonight?
We are wondering if you would like to play basketball with us.