English verb conjugation
CAN PREACH

Regular verb: preach - preached - preached

Affirmation

Simple form	V-ing form
I can preach you can preach he can preach we can preach you can preach they can preach	I can be preaching you can be preaching he can be preaching we can be preaching you can be preaching they can be preaching
Perfect	V-ing perfect
I can have preached you can have preached he can have preached we can have preached you can have preached they can have preached	I can have been preaching you can have been preaching he can have been preaching we can have been preaching you can have been preaching they can have been preaching

Negation

Simple form	V-ing form
I can't preach you can't preach he can't preach we can't preach you can't preach they can't preach	I can't be preaching you can't be preaching he can't be preaching we can't be preaching you can't be preaching they can't be preaching
Perfect	V-ing perfect
I can't have preached you can't have preached he can't have preached we can't have preached you can't have preached they can't have preached	I can't have been preaching you can't have been preaching he can't have been preaching we can't have been preaching you can't have been preaching they can't have been preaching

Interrogative form

Simple form	V-ing form
can I preach? can you preach? can he preach? can we preach? can you preach? can they preach?	can I be preaching? can you be preaching? can he be preaching? can we be preaching? can you be preaching? can they be preaching?
Perfect	V-ing perfect
can I have preached? can you have preached? can he have preached? can we have preached? can you have preached? can they have preached?	can I have been preaching? can you have been preaching? can he have been preaching? can we have been preaching? can you have been preaching? can they have been preaching?

Interro-negative form

Simple form	V-ing form
can't I preach? can't you preach? can't he preach? can't we preach? can't you preach? can't they preach?	can't I be preaching? can't you be preaching? can't he be preaching? can't we be preaching? can't you be preaching? can't they be preaching?
Perfect	V-ing perfect
can't I have preached? can't you have preached? can't he have preached? can't we have preached? can't you have preached? can't they have preached?	can't I have been preaching? can't you have been preaching? can't he have been preaching? can't we have been preaching? can't you have been preaching? can't they have been preaching?