English verb conjugation
SHOULD PLOUGH

Regular verb: plough - ploughed - ploughed

Affirmation

Simple form	V-ing form
I'd plough you'd plough he'd plough we'd plough you'd plough they'd plough	I'd be ploughing you'd be ploughing he'd be ploughing we'd be ploughing you'd be ploughing they'd be ploughing
Perfect	V-ing perfect
I should've ploughed you should've ploughed he should've ploughed we should've ploughed you should've ploughed they should've ploughed	I should've been ploughing you should've been ploughing he should've been ploughing we should've been ploughing you should've been ploughing they should've been ploughing

Negation

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

Interrogative form

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

Interro-negative form

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