Students will review simple sentences with the examples, "The dog ran." They will review that every sentence needs at least two things: a subject which is a noun and a predicate which is a verb. They will also review phrases and look at the phrase: "over the fence." They will discuss how it does not contain a subject or a predicate, so it does not form a complete thought. They will then sort groups of words into the categories, 'Phrases' and 'Sentences.' Explain that prepositional phrases are important to learn because they give extra information about things they write about.