Present perfect tense
Rumus:
(+) Subject + Has/Have + Been + Verb 3 + by + Object
(-) Subject + Has/Have + Not + Verb 3 + by + Object
Contoh:
(+) The concert has been prepared well by the committee
(-) The concert has not been prepared well by them
Past perfect tense
Rumus:
(+) Subject + Had + Been + Verb 3 + by + Object
(-) Subject + Had + Not + Been + Verb 3 + by + Object
Contoh:
(+) Many bicycle had been repaired by those mechanics
(-) Many bicycle had not been repaired by those mechanics
Itulah pengertian, rumus, hingga contoh kalimat active dan passive voice. Semoga bermanfaat.