No. Party can be a noun, or a verb (to make merry). It is not a preposition.
No, there is not a preposition in there. I is the subject, had is the verb, a pizza party is the object, and today is an adverb.
The object of the preposition 'to' is 'an anniversary party'.
Why did the preposition go to the party? Because it couldn't stand being left out!
"At" is a preposition."The" is an article."The" could be part of a prepositional phrase. It would come between the preposition and the object of the preposition.Mary was already at the party when we arrived.We met John at the theater.She leaves in the morning.
I want to invite you out for a drink. Were you invited to the wedding?
Not typically. The usual way is to say "Is Tony invited to the party?"Although an invitation may be for a party, or to a party, the preposition "to" is almost exclusively used to say someone is invited to attend a party.
But is usually a conjunction. However, there is one construction where it apparently should be treated as a preposition: when it means "except", e.g. No one but me has seen this / No one has seen this but me.-- The but me could actually be a truncated clause, i.e. "No one else has seen this but I have seen this" but there is a disparity between this and other conjunctions (Either he or I am the guilty party --> Either he is the guilty party or I am).
"Before" can be either an adverb or a preposition, depending on whether it has an object (sometimes one is omitted). Adverb - He had seen that car before. Preposition - He left before the end.
No, then is not a preposition. It is a conjuction.Than is a preposition.
The word BUT can "act" as a preposition but is typically a conjunction and possibly an adverb. In the sentence "No one can help him but himself" the phrase "but himself" is actually an elliptical (truncated) form of "but he can help himself" where BUT is a conjunction. Here the word BUT functions like the word except, which is more consistently defined as a preposition.
flew is not a preposition. sorry but through is a preposition
No, then is not a preposition. It is a conjuction.Than is a preposition.