วันอังคารที่ 3 พฤษภาคม พ.ศ. 2559

The passive


The passive



                 S           V      O
ACTIVE: Mary helped the boy.
                          S           V      O
PASSIVE: The boy was helped by Mary.



Form of the passive: be + past participle.
ACTIVE: An accident happened.
PASSIVE: none

Only transitive verbs are used in the passive. It’s not possible to use verbs such as happen, sleep, and come.
ACTIVE                                                                PASSIVE
Simple present              Mary     helps                   john.   John      is helped                          by marry
Present progressive     Mary     is helping            john.   John       is being  helped               by marry
Present perfect             Mary    has helped          john.    John       has been helped               by marry
Simple past                   Mary    helped                john.    John       was helped                       by marry
Past progressive           Mary     was helping        john.   John      was being helped             by marry
Past perfect                   Mary     had helped         john.   John      had been helped               by marry
Simple future                Mary     will help              john.  John      will be helped                   by marry
Be going to                   Mary    is going to help   john.  John       is going to helped             by marry
Future perfect*             Mary     will have helped john.  John      will have been helped      by marry

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