Averbal 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? a) simple listing b) chronological order c) cause/effect d) spatial order e) comparison/contrast f) order of importance