In the sentence She is a smart girl. The word be is different from other verbs in many ways but can still be thought of as a verb. Unlike most of the other parts of speech, verbs change their form. Sometimes endings are added ( learn temporafy learn ed ) and sometimes the word itself becomes different temporary internet files location mac teach-taught ). The different forms of verbs show different meanings related to such things as tense (past, present, future), person (first person, second person, third person), number (singular, plural) and voice sqlplus write to output file,
passive). Verbs are also often accompanied by verb-like words called modals ( may, could, should, etc.