I must tub you must tub she must tub we must tub you must tub they must tub
Forma con V-ing
I must be tubbing you must be tubbing she must be tubbing we must be tubbing you must be tubbing they must be tubbing
Perfecto
I must have tubbed you must have tubbed she must have tubbed we must have tubbed you must have tubbed they must have tubbed
Perfecto con V-ing
I must have been tubbing you must have been tubbing she must have been tubbing we must have been tubbing you must have been tubbing they must have been tubbing
Negación
Forma simple
I must not tub you must not tub she must not tub we must not tub you must not tub they must not tub
Forma con V-ing
I must not be tubbing you must not be tubbing she must not be tubbing we must not be tubbing you must not be tubbing they must not be tubbing
Perfecto
I must not have tubbed you must not have tubbed she must not have tubbed we must not have tubbed you must not have tubbed they must not have tubbed
Perfecto con V-ing
I must not have been tubbing you must not have been tubbing she must not have been tubbing we must not have been tubbing you must not have been tubbing they must not have been tubbing
Forma interrogativa
Forma simple
must I tub? must you tub? must she tub? must we tub? must you tub? must they tub?
Forma con V-ing
must I be tubbing? must you be tubbing? must she be tubbing? must we be tubbing? must you be tubbing? must they be tubbing?
Perfecto
must I have tubbed? must you have tubbed? must she have tubbed? must we have tubbed? must you have tubbed? must they have tubbed?
Perfecto con V-ing
must I have been tubbing? must you have been tubbing? must she have been tubbing? must we have been tubbing? must you have been tubbing? must they have been tubbing?
Forma interro-negativa
Forma simple
must I not tub? must you not tub? must she not tub? must we not tub? must you not tub? must they not tub?
Forma con V-ing
must I not be tubbing? must you not be tubbing? must she not be tubbing? must we not be tubbing? must you not be tubbing? must they not be tubbing?
Perfecto
must I not have tubbed? must you not have tubbed? must she not have tubbed? must we not have tubbed? must you not have tubbed? must they not have tubbed?
Perfecto con V-ing
must I not have been tubbing? must you not have been tubbing? must she not have been tubbing? must we not have been tubbing? must you not have been tubbing? must they not have been tubbing?