Если бы джон не прикрепил значок на

Если бы джон не прикрепил значок на рубашку , я бы не узнал , что он участник конференции

Результаты (английский) 1:

If John does not tacked icon on the shirt, I would not have learned that he was a participant of the Conference

Результаты (английский) 2:

If John had not attached the badge on his shirt, I would not have learned that he is a member of the conference

Результаты (английский) 3:

if john doesn"t put a badge on his shirt, i don"t know what he is member of the conference