Invitation is a request (spoken or written) to participate or be present or take part in something or event. Some kinds of invitations: Birthday, wedding, meeting, etc.
To make an invitation must include:
The name of the person sponsoring the event (who is the host/hostess?)
Exactly who is invited (can someone bring a guest, spouse, child?
What type of social event is being held
The date, address, and time of the event
Directions or a simple map if the location may be difficult to find
What type of dress is appropriate or preferred
The phone number and deadline to reply; precede these facts with “RSVP” (French abbreviation for “please reply”).
You can invite your friend orally, use examples below:
I would like to invite you to come to ....
Would you like to come to ....
Lets go to City Park!
If you don't have anything to done, please come to my house!
How to Declining an invitation
I am really sorry about that
Sorry, I can't. I have to do my home work
I’d like to, sorry but I can’t.
How to Accepting an invitation :
Thank you. I'd like to
That's a good idea
I'd like to, thank you
Thank you for the invitation. How to Declining an invitation
I'd be glad to