I must harvest you must harvest he must harvest we must harvest you must harvest they must harvest
Forma con V-ing
I must be harvesting you must be harvesting he must be harvesting we must be harvesting you must be harvesting they must be harvesting
Perfecto
I must have harvested you must have harvested he must have harvested we must have harvested you must have harvested they must have harvested
Perfecto con V-ing
I must have been harvesting you must have been harvesting he must have been harvesting we must have been harvesting you must have been harvesting they must have been harvesting
Negación
Forma simple
I must not harvest you must not harvest he must not harvest we must not harvest you must not harvest they must not harvest
Forma con V-ing
I must not be harvesting you must not be harvesting he must not be harvesting we must not be harvesting you must not be harvesting they must not be harvesting
Perfecto
I must not have harvested you must not have harvested he must not have harvested we must not have harvested you must not have harvested they must not have harvested
Perfecto con V-ing
I must not have been harvesting you must not have been harvesting he must not have been harvesting we must not have been harvesting you must not have been harvesting they must not have been harvesting
Forma interrogativa
Forma simple
must I harvest? must you harvest? must he harvest? must we harvest? must you harvest? must they harvest?
Forma con V-ing
must I be harvesting? must you be harvesting? must he be harvesting? must we be harvesting? must you be harvesting? must they be harvesting?
Perfecto
must I have harvested? must you have harvested? must he have harvested? must we have harvested? must you have harvested? must they have harvested?
Perfecto con V-ing
must I have been harvesting? must you have been harvesting? must he have been harvesting? must we have been harvesting? must you have been harvesting? must they have been harvesting?
Forma interro-negativa
Forma simple
must I not harvest? must you not harvest? must he not harvest? must we not harvest? must you not harvest? must they not harvest?
Forma con V-ing
must I not be harvesting? must you not be harvesting? must he not be harvesting? must we not be harvesting? must you not be harvesting? must they not be harvesting?
Perfecto
must I not have harvested? must you not have harvested? must he not have harvested? must we not have harvested? must you not have harvested? must they not have harvested?
Perfecto con V-ing
must I not have been harvesting? must you not have been harvesting? must he not have been harvesting? must we not have been harvesting? must you not have been harvesting? must they not have been harvesting?