Passive voice construction

When we form Passive Voice the object of the sentence in active voice becomes the subject of the sentence in the passive voice. Depending on the tense used we use different forms of verb 'be' and past participle (which can be found in the third column of irregular verbs) and in case of regular verbs it can be formed by adding -d or -ed to the infinitive.

Simple Forms

	Active voice	Passive voice
Simple Present:	I write a letter	A letter is written
Simple Past:	I wrote a letter	A letter was written
Present Perfect:	I have written a letter	A letter has been written
Past Perfect:	I had written a letter	A letter had been written
Simple Future:	I will write a letter	A letter will be written.
Future Perfect:	I will have written a letter	A letter will have been written
Conditional II	I would write a letter	A letter would be written
Conditional III	I would have written a letter	A letter would have been written
Modals	I may write a letter	A letter may be written

Progressive / Continuous Forms

	Active	Passive
Present Progressive:	I am writing a letter	A letter is being written
Past Progressive:	I was writing a letter	A letter was being written
Present Perfect Progressive:	I have been writing a letter	A letter has been being written
Past Perfect Progressive:	I had been writing a letter	A letter had been being written
Future Progressive:	I will be writing a letter	A letter will be being written.
Future Perfect Progressive:	I will have been writing a letter	A letter will have been being written
Conditional II	I would be writing a letter	A letter would be being written
Conditional III	I would have been writing a letter	A letter would have been being written