There are two types of invitations: formal and informal. Formal invitations use polite language like "I would like to invite you to" or "Would you like to" along with accepting responses like "Yes, I would love to" or refusing responses involving apologies. Informal invitations are more casual, using language like "Will you come" or "Why don't you" paired with shorter accepting responses like "All right just a quick one" or refusing responses including thanks and an excuse.

1. There are two kinds of invitation first formal
invitation and informal invitation.

2. The expression of formal invitation follow:
Formal situation Accepting Refusing
• I would like you to come to....
• I wonder if you would like to...
• Would you like to...?
• I would like to invite you to...
• Yes i would love to.
• I would be happy to accept.
• Well, i would be glad to accept.
• Well i would like to.
• Well, I would like to, but Iam
not sure i have time.
• That’s very kind of you, Iam
busy.
• I like to very much, but i
should go now.
• I would like to, but Iam affraid
Iam busy today

3. The expression of informal invitation follow:
Informal situation Accepting Refusing
• Will you come....
• Why don’t you.....?
• Come...
• How about coming with us to...?
• All right just a quick one.
• Thanks anyway
• That’s very kind of you
• What a good idea
• Thanks anyway, but.....
• Iam sorry, but i have to....
• Sorry....
• I have no time