Conjugación del verbo inglés
MUST SIGHTSEE

Verbo regular: sightsee - sightseed - sightseed

Afirmación

Forma simple	Forma con V-ing
I must sightsee you must sightsee he must sightsee we must sightsee you must sightsee they must sightsee	I must be sightseeing you must be sightseeing he must be sightseeing we must be sightseeing you must be sightseeing they must be sightseeing
Perfecto	Perfecto con V-ing
I must have sightseed you must have sightseed he must have sightseed we must have sightseed you must have sightseed they must have sightseed	I must have been sightseeing you must have been sightseeing he must have been sightseeing we must have been sightseeing you must have been sightseeing they must have been sightseeing

Negación

Forma simple	Forma con V-ing
I mustn't sightsee you mustn't sightsee he mustn't sightsee we mustn't sightsee you mustn't sightsee they mustn't sightsee	I mustn't be sightseeing you mustn't be sightseeing he mustn't be sightseeing we mustn't be sightseeing you mustn't be sightseeing they mustn't be sightseeing
Perfecto	Perfecto con V-ing
I mustn't have sightseed you mustn't have sightseed he mustn't have sightseed we mustn't have sightseed you mustn't have sightseed they mustn't have sightseed	I mustn't have been sightseeing you mustn't have been sightseeing he mustn't have been sightseeing we mustn't have been sightseeing you mustn't have been sightseeing they mustn't have been sightseeing

Forma interrogativa

Forma simple	Forma con V-ing
must I sightsee? must you sightsee? must he sightsee? must we sightsee? must you sightsee? must they sightsee?	must I be sightseeing? must you be sightseeing? must he be sightseeing? must we be sightseeing? must you be sightseeing? must they be sightseeing?
Perfecto	Perfecto con V-ing
must I have sightseed? must you have sightseed? must he have sightseed? must we have sightseed? must you have sightseed? must they have sightseed?	must I have been sightseeing? must you have been sightseeing? must he have been sightseeing? must we have been sightseeing? must you have been sightseeing? must they have been sightseeing?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I sightsee? mustn't you sightsee? mustn't he sightsee? mustn't we sightsee? mustn't you sightsee? mustn't they sightsee?	mustn't I be sightseeing? mustn't you be sightseeing? mustn't he be sightseeing? mustn't we be sightseeing? mustn't you be sightseeing? mustn't they be sightseeing?
Perfecto	Perfecto con V-ing
mustn't I have sightseed? mustn't you have sightseed? mustn't he have sightseed? mustn't we have sightseed? mustn't you have sightseed? mustn't they have sightseed?	mustn't I have been sightseeing? mustn't you have been sightseeing? mustn't he have been sightseeing? mustn't we have been sightseeing? mustn't you have been sightseeing? mustn't they have been sightseeing?