Active voice Vs. Passive voice

Active voice questions (Auxiliary + Subject + Present/Past participle)

	Past	Present	Future
Simple	What did she do?	What does she do?	What will she do?
Continuous (Present participle)	What was she doing?	What is she doing?	What will she be doing?
Perfect (Past participle)	What had she done?	What has she done?	What will she have done?
Perfect continuous (Present participle)	What had she been doing?	What has she been doing?	What will she have been doing?

Active voice responses (Subject + Auxiliary + Present/Past participle)

	Past	Present	Future
Simple	She wrote a letter	She writes a letter	She will write a letter
Continuous (Present participle)	She was writing a letter	She is writing a letter	She will be writing a letter
Perfect (Past participle)	She had written a letter	She has written a letter	She will have written a letter
Perfect continuous (Present participle)	She had been writing a letter	She has been writing a letter	She will have been writing a letter

Passive voice questions (Auxiliary + Subject + Past participle)

	Past	Present	Future
Simple	Was a letter written?	Is a letter written?	Will a letter be written?
Continuous (Present participle)	Was a letter being written?	Is a letter being written?	Will a letter be being written?
Perfect	Had a letter been written?	Has a letter been written?	Will a letter have been written?
Perfect continuous	Had a letter been being written?	Has a letter been being written?	Will a letter have been being written?

Passive voice responses (Subject + Auxiliary + Past participle)

	Past	Present	Future
Simple	A letter was written	A letter is written	A letter will be written
Continuous (Present participle)	A letter was being written	A letter is being written	A letter will be being written
Perfect	A letter had been written	A letter has been written	A letter will have been written
Perfect continuous	A letter had been being written	A letter has been being written	A letter will have been being written