Page 131 - New Grammar with a Smile 6
P. 131

Read this table to understand the tense structure when we change a sentence from the
             active to the passive voice. Note the changes that occur in singular and plural number.


                       Tense                  Active voice                      Passive voice
               Simple present

               •  singular               •  Robin writes a poem.     •  A poem is written by Robin.
               •  plural                 •  Robin writes poems.      •  Poems are written by Robin.
               Simple past

               •  singular               •  Robin wrote a poem.      •  A poem was written by Robin.
               •  plural                 •  Robin wrote poems.       •  Poems were written by Robin.
               Simple future
               •  singular               •  Robin will write         •  A poem will be written
                                           a poem.                     by Robin.
               •  plural                 •  Robin will write         •  Poems will be written
                                           poems.                      by Robin.
               Present continuous

               •  singular              •  Robin is writing          •  A poem is being written
                                           a poem.                     by Robin.

               •  plural                •  Robin is writing          •  Poems are being written
                                           poems.                      by Robin.

               Past continuous
               •  singular              •  Robin was writing         •  A poem was being written
                                           a poem.                     by Robin.
               •  plural                •  Robin was writing         •  Poems were being written
                                           poems.                      by Robin.
               Present perfect

               •  singular              •  Robin has written         •  A poem has been written
                                           a poem.                     by Robin.

               •  plural                •  Robin has written         •  Poems have been written
                                           poems.                      by Robin.

               Past perfect
               •  singular              •  Robin had written         •  A poem had been written
                                           a poem.                     by Robin.
               •  plural                •  Robin had written         •  Poems had been written
                                           poems.                      by Robin.
               Future perfect
               •  singular              •  Robin will have           •  A poem will have been written
                                           written a poem.             by Robin
               •  plural                •  Robin will have           •  Poems will have been written
                                           written poems.              by Robin.


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