I must skip you must skip she must skip we must skip you must skip they must skip
Forma con V-ing
I must be skipping you must be skipping she must be skipping we must be skipping you must be skipping they must be skipping
Perfecto
I must have skipped you must have skipped she must have skipped we must have skipped you must have skipped they must have skipped
Perfecto con V-ing
I must have been skipping you must have been skipping she must have been skipping we must have been skipping you must have been skipping they must have been skipping
Negación
Forma simple
I must not skip you must not skip she must not skip we must not skip you must not skip they must not skip
Forma con V-ing
I must not be skipping you must not be skipping she must not be skipping we must not be skipping you must not be skipping they must not be skipping
Perfecto
I must not have skipped you must not have skipped she must not have skipped we must not have skipped you must not have skipped they must not have skipped
Perfecto con V-ing
I must not have been skipping you must not have been skipping she must not have been skipping we must not have been skipping you must not have been skipping they must not have been skipping
Forma interrogativa
Forma simple
must I skip? must you skip? must she skip? must we skip? must you skip? must they skip?
Forma con V-ing
must I be skipping? must you be skipping? must she be skipping? must we be skipping? must you be skipping? must they be skipping?
Perfecto
must I have skipped? must you have skipped? must she have skipped? must we have skipped? must you have skipped? must they have skipped?
Perfecto con V-ing
must I have been skipping? must you have been skipping? must she have been skipping? must we have been skipping? must you have been skipping? must they have been skipping?
Forma interro-negativa
Forma simple
must I not skip? must you not skip? must she not skip? must we not skip? must you not skip? must they not skip?
Forma con V-ing
must I not be skipping? must you not be skipping? must she not be skipping? must we not be skipping? must you not be skipping? must they not be skipping?
Perfecto
must I not have skipped? must you not have skipped? must she not have skipped? must we not have skipped? must you not have skipped? must they not have skipped?
Perfecto con V-ing
must I not have been skipping? must you not have been skipping? must she not have been skipping? must we not have been skipping? must you not have been skipping? must they not have been skipping?