VERB TO BE- PERSONAL PRONOUNS

PERSONAL PRONOUNS- VERB TO BE I                                               AM YOU                                        ARE HE                                           IS SHE                                         IS IT                                             IS WE                                          ARE YOU                                       ARE THEY                                      ARE   EXAMPLE:   POSSITIVE FORM: I AM A DOCTOR YOU ARE A CACHIER HE IS A POLICEMAN SHE IS A MECHANIC NEGATIVE FORM I AM NOT A DOCTOR. SHE IS NOT A CACHIER. HE IS NOT A POLICEMAN. SHE IS NOT A MECHANIC. QUESTIONS IS SHE A CACHIER? ARE YOU A DOCTOR?