English verb conjugation
MUST LECTURE

Regular verb: lecture - lectured - lectured

Affirmation

Simple form	V-ing form
I must lecture you must lecture he must lecture we must lecture you must lecture they must lecture	I must be lecturing you must be lecturing he must be lecturing we must be lecturing you must be lecturing they must be lecturing
Perfect	V-ing perfect
I must have lectured you must have lectured he must have lectured we must have lectured you must have lectured they must have lectured	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

Negation

Simple form	V-ing form
I must not lecture you must not lecture he must not lecture we must not lecture you must not lecture they must not lecture	I must not be lecturing you must not be lecturing he must not be lecturing we must not be lecturing you must not be lecturing they must not be lecturing
Perfect	V-ing perfect
I must not have lectured you must not have lectured he must not have lectured we must not have lectured you must not have lectured they must not have lectured	I must not have been lecturing you must not have been lecturing he must not have been lecturing we must not have been lecturing you must not have been lecturing they must not have been lecturing

Interrogative form

Simple form	V-ing form
must I lecture? must you lecture? must he lecture? must we lecture? must you lecture? must they lecture?	must I be lecturing? must you be lecturing? must he be lecturing? must we be lecturing? must you be lecturing? must they be lecturing?
Perfect	V-ing perfect
must I have lectured? must you have lectured? must he have lectured? must we have lectured? must you have lectured? must they have lectured?	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?

Interro-negative form

Simple form	V-ing form
must I not lecture? must you not lecture? must he not lecture? must we not lecture? must you not lecture? must they not lecture?	must I not be lecturing? must you not be lecturing? must he not be lecturing? must we not be lecturing? must you not be lecturing? must they not be lecturing?
Perfect	V-ing perfect
must I not have lectured? must you not have lectured? must he not have lectured? must we not have lectured? must you not have lectured? must they not have lectured?	must I not have been lecturing? must you not have been lecturing? must he not have been lecturing? must we not have been lecturing? must you not have been lecturing? must they not have been lecturing?