Common prepositions include: about, after, at, before, behind, by, during, for, from, in, of, on, over, past, through, to, under, up, and with.
So a prepositional phrase is likely to start with one of those words.
1. In the desert
2. On the water
3. At the gas station
4. On her arm
5. Through the puddles
Noun1.the subject of a talk, a piece of writing, a person's thoughts, or an exhibition; a topic."the theme of the sermon was reverence"
