Neither a simple nor a complete subject will be part of a prepositional phrase. ... Sometimes, prepositional phrases are placed very near a subject and seem like they are part of a subject. However, they are not.

What does a complete subject include?

The complete subject includes all the words that tell whom or what the sentence is about. The complete predicate includes all the words that tell what the subject is, has, does, or feels. Notice that the sentence does not have to be short to be simple.

Is the prepositional phrase in the complete predicate?

Sometimes a word or phrase will come between the simple subject and simple predicate. ... (The adverb prepositional phrase, During the storm, is part of the predicate even though it is at the beginning of the sentence.)