I can lecture you can lecture he can lecture we can lecture you can lecture they can lecture
Forma com 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
Perfeito
I can have lectured you can have lectured he can have lectured we can have lectured you can have lectured they can have lectured
Perfeito com 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
Negação
Forma simple
I cannot lecture you cannot lecture he cannot lecture we cannot lecture you cannot lecture they cannot lecture
Forma com V-ing
I cannot be lecturing you cannot be lecturing he cannot be lecturing we cannot be lecturing you cannot be lecturing they cannot be lecturing
Perfeito
I cannot have lectured you cannot have lectured he cannot have lectured we cannot have lectured you cannot have lectured they cannot have lectured
Perfeito com V-ing
I cannot have been lecturing you cannot have been lecturing he cannot have been lecturing we cannot have been lecturing you cannot have been lecturing they cannot 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 com 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?
Perfeito
can I have lectured? can you have lectured? can he have lectured? can we have lectured? can you have lectured? can they have lectured?
Perfeito com 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-Negação
Forma simple
can I not lecture? can you not lecture? can he not lecture? can we not lecture? can you not lecture? can they not lecture?
Forma com V-ing
can I not be lecturing? can you not be lecturing? can he not be lecturing? can we not be lecturing? can you not be lecturing? can they not be lecturing?
Perfeito
can I not have lectured? can you not have lectured? can he not have lectured? can we not have lectured? can you not have lectured? can they not have lectured?
Perfeito com V-ing
can I not have been lecturing? can you not have been lecturing? can he not have been lecturing? can we not have been lecturing? can you not have been lecturing? can they not have been lecturing?