What is the predicate nominative , direct objects , subjects in this sentence after four months Mr brainerd caught the measles

The predicate nominative in this sentence is "measles." This is because the predicate nominative renames or identifies the subject, which is "Mr. Brainerd."

The direct object in this sentence is "the measles." This is because the direct object receives the action of the verb, which is "caught."

The subject in this sentence is "Mr. Brainerd." This is because the subject is the person or thing that performs the action of the verb, and in this case, Mr. Brainerd is the one who caught the measles.