2. Active Voice
A sentence is in ACTIVE VOICE when the significance of the verb is
produced by the grammatical person to whom one refers: Pedro of
Mendoza founded Buenos Aires. (Pedro de Mendoza fundó Buenos Aires).
Examples:
Tom writes a letter Tom is writing a letter
Tom was writing a letter Tom wrote a letter
Tom has written a letter Tom had written a letter
Tom will write a letter Tom is going to write a letter
Tom can write a letter
Tom could write a letter
Tom must write a letter
Tom may write a letter
Tom might write a letter
3. Passive Voice
A sentence is in PASSIVE VOICE when the significance of the verb is got
by the grammatical person to whom one refers: Buenos Aires was founded by
Pedro of Mendoza. (Buenos Aires fue fundada por Pedro de Mendoza).
Examples:
A letter is written by Tom A letter is being written by Tom
A letter was being written by Tom A letter was written by Tom
A letter has been written by Tom A letter had been written by Tom
A letter will be written by Tom A letter is going to be written by Tom
A letter can be written by Tom
A letter could be written by Tom
A letter must be written by Tom
A letter may be written...
A letter might be written...