i give up

Evan: "We're learning about subjects and predicates."

Eric: "Great!"

Evan: "Like in the sentence, 'Fred ran to school,' 'Fred' is the subject and 'ran to school' is the predicate."

Eric: "Outstanding! You know, I was just teaching my students about subject-verb agreement today."

Evan: "What's that?"

Eric: "That's just getting subjects and verbs to sound right together. Like you'd never say 'Fred run to school.'"

Evan: "Yes you would: 'Fred, run to school!'"