Prepositions are words that show the relationship between a noun or pronoun and another word in the sentence. They often indicate location, direction, or time.
Here are some examples of prepositions:
* on the table
* in the car
* after dinner
* to the store
"Had" is a verb that indicates possession or past action.
For example:
* I had a sandwich for lunch.
* She had gone to the store before I arrived.