I should litter you should litter he should litter we should litter you should litter they should litter
Forma con V-ing
I should be littering you should be littering he should be littering we should be littering you should be littering they should be littering
Perfecto
I should have littered you should have littered he should have littered we should have littered you should have littered they should have littered
Perfecto con V-ing
I should have been littering you should have been littering he should have been littering we should have been littering you should have been littering they should have been littering
Negación
Forma simple
I should not litter you should not litter he should not litter we should not litter you should not litter they should not litter
Forma con V-ing
I should not be littering you should not be littering he should not be littering we should not be littering you should not be littering they should not be littering
Perfecto
I should not have littered you should not have littered he should not have littered we should not have littered you should not have littered they should not have littered
Perfecto con V-ing
I should not have been littering you should not have been littering he should not have been littering we should not have been littering you should not have been littering they should not have been littering
Forma interrogativa
Forma simple
should I litter? should you litter? should he litter? should we litter? should you litter? should they litter?
Forma con V-ing
should I be littering? should you be littering? should he be littering? should we be littering? should you be littering? should they be littering?
Perfecto
should I have littered? should you have littered? should he have littered? should we have littered? should you have littered? should they have littered?
Perfecto con V-ing
should I have been littering? should you have been littering? should he have been littering? should we have been littering? should you have been littering? should they have been littering?
Forma interro-negativa
Forma simple
should I not litter? should you not litter? should he not litter? should we not litter? should you not litter? should they not litter?
Forma con V-ing
should I not be littering? should you not be littering? should he not be littering? should we not be littering? should you not be littering? should they not be littering?
Perfecto
should I not have littered? should you not have littered? should he not have littered? should we not have littered? should you not have littered? should they not have littered?
Perfecto con V-ing
should I not have been littering? should you not have been littering? should he not have been littering? should we not have been littering? should you not have been littering? should they not have been littering?