(February 2013) Durham tubes are used in microbiology to detect production of gas by microorganisms. They are simply smaller test tubes inserted upside down in another test tube. This small tube is initially filled with the solution in which the microorganism is to be grown.
A compound predicate is two or more simple predicates joined by a conjunction that indicate actions by the same subject. Example : Bill picked up the mail and walked the dog.. Bill is the subject for both verbs.
Parts of the Sentence-Predicate Nominative. A predicate nominative or predicate noun completes a linking verb and renames the subject. It is a complement or completer because it completes the verb. Predicate nominatives complete only linking verbs.redicate nominatives can be compound. Example: Mr. Johanson is a teacher, father, and my neighbor. Instructions: Find the subjects, verbs, and predicate nominatives in these sentences. Some may have compound subjects, verbs, or predicate nominatives.