English verb conjugation
CAN PLOUGH

Regular verb: plough - ploughed - ploughed

Affirmation

Simple form	V-ing form
I can plough you can plough he can plough we can plough you can plough they can plough	I can be ploughing you can be ploughing he can be ploughing we can be ploughing you can be ploughing they can be ploughing
Perfect	V-ing perfect
I can have ploughed you can have ploughed he can have ploughed we can have ploughed you can have ploughed they can have ploughed	I can have been ploughing you can have been ploughing he can have been ploughing we can have been ploughing you can have been ploughing they can have been ploughing

Negation

Simple form	V-ing form
I can't plough you can't plough he can't plough we can't plough you can't plough they can't plough	I can't be ploughing you can't be ploughing he can't be ploughing we can't be ploughing you can't be ploughing they can't be ploughing
Perfect	V-ing perfect
I can't have ploughed you can't have ploughed he can't have ploughed we can't have ploughed you can't have ploughed they can't have ploughed	I can't have been ploughing you can't have been ploughing he can't have been ploughing we can't have been ploughing you can't have been ploughing they can't have been ploughing

Interrogative form

Simple form	V-ing form
can I plough? can you plough? can he plough? can we plough? can you plough? can they plough?	can I be ploughing? can you be ploughing? can he be ploughing? can we be ploughing? can you be ploughing? can they be ploughing?
Perfect	V-ing perfect
can I have ploughed? can you have ploughed? can he have ploughed? can we have ploughed? can you have ploughed? can they have ploughed?	can I have been ploughing? can you have been ploughing? can he have been ploughing? can we have been ploughing? can you have been ploughing? can they have been ploughing?

Interro-negative form

Simple form	V-ing form
can't I plough? can't you plough? can't he plough? can't we plough? can't you plough? can't they plough?	can't I be ploughing? can't you be ploughing? can't he be ploughing? can't we be ploughing? can't you be ploughing? can't they be ploughing?
Perfect	V-ing perfect
can't I have ploughed? can't you have ploughed? can't he have ploughed? can't we have ploughed? can't you have ploughed? can't they have ploughed?	can't I have been ploughing? can't you have been ploughing? can't he have been ploughing? can't we have been ploughing? can't you have been ploughing? can't they have been ploughing?