I can assist you can assist he can assist we can assist you can assist they can assist
Forma con V-ing
I can be assisting you can be assisting he can be assisting we can be assisting you can be assisting they can be assisting
Perfecto
I can have assisted you can have assisted he can have assisted we can have assisted you can have assisted they can have assisted
Perfecto con V-ing
I can have been assisting you can have been assisting he can have been assisting we can have been assisting you can have been assisting they can have been assisting
Negación
Forma simple
I can't assist you can't assist he can't assist we can't assist you can't assist they can't assist
Forma con V-ing
I can't be assisting you can't be assisting he can't be assisting we can't be assisting you can't be assisting they can't be assisting
Perfecto
I can't have assisted you can't have assisted he can't have assisted we can't have assisted you can't have assisted they can't have assisted
Perfecto con V-ing
I can't have been assisting you can't have been assisting he can't have been assisting we can't have been assisting you can't have been assisting they can't have been assisting
Forma interrogativa
Forma simple
can I assist? can you assist? can he assist? can we assist? can you assist? can they assist?
Forma con V-ing
can I be assisting? can you be assisting? can he be assisting? can we be assisting? can you be assisting? can they be assisting?
Perfecto
can I have assisted? can you have assisted? can he have assisted? can we have assisted? can you have assisted? can they have assisted?
Perfecto con V-ing
can I have been assisting? can you have been assisting? can he have been assisting? can we have been assisting? can you have been assisting? can they have been assisting?
Forma interro-negativa
Forma simple
can't I assist? can't you assist? can't he assist? can't we assist? can't you assist? can't they assist?
Forma con V-ing
can't I be assisting? can't you be assisting? can't he be assisting? can't we be assisting? can't you be assisting? can't they be assisting?
Perfecto
can't I have assisted? can't you have assisted? can't he have assisted? can't we have assisted? can't you have assisted? can't they have assisted?
Perfecto con V-ing
can't I have been assisting? can't you have been assisting? can't he have been assisting? can't we have been assisting? can't you have been assisting? can't they have been assisting?