2.1. Presente simpleVoz activa: John writes the letterVoz pasiva: The letter is written by John 2.2. Presente continuoVoz activa: John is writing the letterVoz pasiva: The letter is being written by John 2.3. Pasado simpleVoz activa: John wrote the letterVoz pasiva: The letter was written by John 2.4. Pasado continuoVoz activa: John was writing the letterVoz pasiva: The letter was being written by John 2.5. Presente perfectoVoz activa: John has written the letterVoz pasiva: The letter has been written by John 2.6. Pasado perfectoVoz activa: John had written the letterVoz pasiva: The letter had been written by John 2.7. Futuro (Will)Voz activa: John will write the letterVoz pasiva: The letter will be written by John 2.8. Futuro (going to)Voz activa: John is going to write the letterVoz pasiva: The letter is going to be written by John
