A sentence is

  • a grammatically independent unit that contains (1) a verb (AKA predicate) and (2) a subject
    • wherein the verb is an action and the subject is a noun
  • at least one word long yet typically composed of at least two words
    • in one-word sentences either the subject (noun) or action (verb) is implied. Example: Go!
  • started with a capital letter and then ended with end-mark punctuation–i.e., a period, exclamation, or question mark.