I must lecture you must lecture he must lecture we must lecture you must lecture they must lecture
Forma con V-ing
I must be lecturing you must be lecturing he must be lecturing we must be lecturing you must be lecturing they must be lecturing
Perfecto
I must have lectured you must have lectured he must have lectured we must have lectured you must have lectured they must have lectured
Perfecto con V-ing
I must have been lecturing you must have been lecturing he must have been lecturing we must have been lecturing you must have been lecturing they must have been lecturing
Negación
Forma simple
I mustn't lecture you mustn't lecture he mustn't lecture we mustn't lecture you mustn't lecture they mustn't lecture
Forma con V-ing
I mustn't be lecturing you mustn't be lecturing he mustn't be lecturing we mustn't be lecturing you mustn't be lecturing they mustn't be lecturing
Perfecto
I mustn't have lectured you mustn't have lectured he mustn't have lectured we mustn't have lectured you mustn't have lectured they mustn't have lectured
Perfecto con V-ing
I mustn't have been lecturing you mustn't have been lecturing he mustn't have been lecturing we mustn't have been lecturing you mustn't have been lecturing they mustn't have been lecturing
Forma interrogativa
Forma simple
must I lecture? must you lecture? must he lecture? must we lecture? must you lecture? must they lecture?
Forma con V-ing
must I be lecturing? must you be lecturing? must he be lecturing? must we be lecturing? must you be lecturing? must they be lecturing?
Perfecto
must I have lectured? must you have lectured? must he have lectured? must we have lectured? must you have lectured? must they have lectured?
Perfecto con V-ing
must I have been lecturing? must you have been lecturing? must he have been lecturing? must we have been lecturing? must you have been lecturing? must they have been lecturing?
Forma interro-negativa
Forma simple
mustn't I lecture? mustn't you lecture? mustn't he lecture? mustn't we lecture? mustn't you lecture? mustn't they lecture?
Forma con V-ing
mustn't I be lecturing? mustn't you be lecturing? mustn't he be lecturing? mustn't we be lecturing? mustn't you be lecturing? mustn't they be lecturing?
Perfecto
mustn't I have lectured? mustn't you have lectured? mustn't he have lectured? mustn't we have lectured? mustn't you have lectured? mustn't they have lectured?
Perfecto con V-ing
mustn't I have been lecturing? mustn't you have been lecturing? mustn't he have been lecturing? mustn't we have been lecturing? mustn't you have been lecturing? mustn't they have been lecturing?