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