I'd be underestimating you'd be underestimating he'd be underestimating we'd be underestimating you'd be underestimating they'd be underestimating
Perfect
I should've underestimated you should've underestimated he should've underestimated we should've underestimated you should've underestimated they should've underestimated
Perfect en V-ing
I should've been underestimating you should've been underestimating he should've been underestimating we should've been underestimating you should've been underestimating they should've been underestimating
Négation
Forme simple
I shouldn't underestimate you shouldn't underestimate he shouldn't underestimate we shouldn't underestimate you shouldn't underestimate they shouldn't underestimate
Forme en V-ing
I shouldn't be underestimating you shouldn't be underestimating he shouldn't be underestimating we shouldn't be underestimating you shouldn't be underestimating they shouldn't be underestimating
Perfect
I shouldn't have underestimated you shouldn't have underestimated he shouldn't have underestimated we shouldn't have underestimated you shouldn't have underestimated they shouldn't have underestimated
Perfect en V-ing
I shouldn't have been underestimating you shouldn't have been underestimating he shouldn't have been underestimating we shouldn't have been underestimating you shouldn't have been underestimating they shouldn't have been underestimating
Forme interrogative
Forme simple
should I underestimate? should you underestimate? should he underestimate? should we underestimate? should you underestimate? should they underestimate?
Forme en V-ing
should I be underestimating? should you be underestimating? should he be underestimating? should we be underestimating? should you be underestimating? should they be underestimating?
Perfect
should I have underestimated? should you have underestimated? should he have underestimated? should we have underestimated? should you have underestimated? should they have underestimated?
Perfect en V-ing
should I have been underestimating? should you have been underestimating? should he have been underestimating? should we have been underestimating? should you have been underestimating? should they have been underestimating?
Forme interro-négative
Forme simple
shouldn't I underestimate? shouldn't you underestimate? shouldn't he underestimate? shouldn't we underestimate? shouldn't you underestimate? shouldn't they underestimate?
Forme en V-ing
shouldn't I be underestimating? shouldn't you be underestimating? shouldn't he be underestimating? shouldn't we be underestimating? shouldn't you be underestimating? shouldn't they be underestimating?
Perfect
shouldn't I have underestimated? shouldn't you have underestimated? shouldn't he have underestimated? shouldn't we have underestimated? shouldn't you have underestimated? shouldn't they have underestimated?
Perfect en V-ing
shouldn't I have been underestimating? shouldn't you have been underestimating? shouldn't he have been underestimating? shouldn't we have been underestimating? shouldn't you have been underestimating? shouldn't they have been underestimating?