Thank you for the invitation.

thank Verb

— To say a good word after someone gives something to you or after someone does something good for you. She thanked him very much for the beautiful food he cooked for her. "I would like a drink, please." "Here is your drink." "Thank you."

you Pronoun

— Used instead of the name of the person being spoken to; it is a second-person pronoun. You are my best friend. Can I go to the shops with you? — Used to talk about anyone. You have to be 18 years old to see that film. She has problems with her eyes, and can't see you properly.

you Determinative

— Used before a word that means the person or people someone is talking to. You guys can leave now.

for Preposition

— shows that something belongs to something else, or has a specific function This cake is for you. This is a net for catching fish. — For is used to show the reason for something He was angry, for he had never been called such terrible names before.

for Subordinator

— For introduces a clause with a subject and a to-infinitive It's not good for you to be too relaxed.

the Determiner

— Used, instead of a, to reference something specific, already known to exist. Compare "I read a book." and "I read the book." — Used with a stress, to show that the word following is special. Are you the John Smith that I went to school with? — Used with an adjective that acts like a noun to mean all of the people concerned The poor are always with us. — Used with superlatives forms of adjectives and adverbs. You are the best.

invitation Noun

— If you receive an invitation, you are being asked to attend an event. The wedding invitations were mailed a week ago. An invitation to a party can be written one or a verbal one. My little boy received an invitation to a schoolmate's birthday party.