Read the following paragraph. A verbal may belong to one of three categories. It may be a participle, which is used only as an adjective. It may be a gerund, which always ends in -ing and functions as a noun. Finally, it may be an infinitive, which is preceded by to and functions as a noun, adjective, or even an adverb. Yet verbals still look very much like verbs.

Which one of six types of expository structure does this paragraph illustrate?

Definition and description is the expository structure that this paragraph illustrates. Out of the six possible structures, this paragraph is clearly a definition of "a verbal" and it describes how they can be used. The paragraph is not a how-to, a cause-and-effect, it does not classify or compare and it is not a problem or a solution.

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