No. Planned is a verb form, or an adjective. It can create a participial phrase, but it's not a preposition.
Yes, it is also a preposition. It is positioned unlike planned.
No, then is not a preposition. It is a conjuction.Than is 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.
its a preposition
At is a preposition. Anything that can be ___ the box is a preposition. For Example: At the box.
If is not a preposition. It is a conjunction.
If a preposition does not have an object, it is not a preposition. It is an adjective, adverb, or possibly a conjunction.
The preposition, the object of the preposition, and everything in between. The object of the preposition answers the question "(preposition) what?" For example: He looked in the box worriedly. "in the box" is the prepositional phrase because "in" is the preposition, and "box" is the object of the preposition. "Box" answers the question, "(preposition) what?, or in this case, "In what?"
That depends on the pronoun you are using at the time. Example: "I have planned to be out." "You have planned to be out." "She has planned to be out." "They have planned to be out." "We have planned to be out." "John has planned to be out." "The whole family has planned to be out."
A prepositional phrase begins with a preposition and ends with an object of a preposition.
The preposition is about; the object of the preposition is riots.