UNIT I

I.                  The Use of Helping Verbs

            Verb to be    : Am, Is , Are, Was, Were, Be, Been , Being      

                                    Be + N/Adj                 (Complement)

                                    Be + Ving                   (Progressive)

                                    Be + V3                      (Simple Passive)

                                    Be + to +V1                (Obligation)

            Verb to have           : Have, Has, had

                                    Have +  N                   (Possession)

                                    Have + V3                  (Perfect)

                                    Have + been + Ving    (Perfect Continuous)

                                    Have + to + V1           (Obligation)

            Verb to do   : Do, Does, Did

                                    Do + V1                      (Question/ Negative/ Emphasis)