I must trip you must trip she must trip we must trip you must trip they must trip
Forma con V-ing
I must be tripping you must be tripping she must be tripping we must be tripping you must be tripping they must be tripping
Perfecto
I must have tripped you must have tripped she must have tripped we must have tripped you must have tripped they must have tripped
Perfecto con V-ing
I must have been tripping you must have been tripping she must have been tripping we must have been tripping you must have been tripping they must have been tripping
Negación
Forma simple
I must not trip you must not trip she must not trip we must not trip you must not trip they must not trip
Forma con V-ing
I must not be tripping you must not be tripping she must not be tripping we must not be tripping you must not be tripping they must not be tripping
Perfecto
I must not have tripped you must not have tripped she must not have tripped we must not have tripped you must not have tripped they must not have tripped
Perfecto con V-ing
I must not have been tripping you must not have been tripping she must not have been tripping we must not have been tripping you must not have been tripping they must not have been tripping
Forma interrogativa
Forma simple
must I trip? must you trip? must she trip? must we trip? must you trip? must they trip?
Forma con V-ing
must I be tripping? must you be tripping? must she be tripping? must we be tripping? must you be tripping? must they be tripping?
Perfecto
must I have tripped? must you have tripped? must she have tripped? must we have tripped? must you have tripped? must they have tripped?
Perfecto con V-ing
must I have been tripping? must you have been tripping? must she have been tripping? must we have been tripping? must you have been tripping? must they have been tripping?
Forma interro-negativa
Forma simple
must I not trip? must you not trip? must she not trip? must we not trip? must you not trip? must they not trip?
Forma con V-ing
must I not be tripping? must you not be tripping? must she not be tripping? must we not be tripping? must you not be tripping? must they not be tripping?
Perfecto
must I not have tripped? must you not have tripped? must she not have tripped? must we not have tripped? must you not have tripped? must they not have tripped?
Perfecto con V-ing
must I not have been tripping? must you not have been tripping? must she not have been tripping? must we not have been tripping? must you not have been tripping? must they not have been tripping?