Grammar
Active to Passive
Subject to
Object
Object to Subject
Change main verb
into 3rd form use preposition ‘by’.
Active
Present Tense
Simple present – sub+v1+s/es+object
Present continuous – sub+is/am/are+v1+ing+object
Present perfect – sub+has/have+v3+object
Present perfect
continuous – sub+has/have+been+v1+ing+object
Past Tense
Simple present –
Subject+V2+ object
Present continuous –
Subject+was/were+v1+ing+ object
Present perfect –
Subject+had+v2+object
Present perfect
continuous – Subject+had+been+v1+ing+ object
Future Tense
Simple future –
Subject+will+v1+ object
Future Continuous –
Subject+will+be+v1+ing+ object
Future perfect –
Subject+will+have+v3+object
Future perfect continuous
– Subject+will+have+been+v1+ing+ object
Passive
Present
Subject+is/am/are+V3+ object
Subject+is/am/are+being+V3+ object
Subject+has/have+been+v3+ object
no change
Past
Subject+V3+ object
Subject+was/were+being+v3+ object
Subject+had+been+v3+ object
no change
Future
Simple future – Subject+will+be+v3+ object
Future Continuous – No change
Future perfect – Sub+will+have+been+v3+object
Future perfect continuous –
Sub+will+have+ Been+v1+ing+object