Conjugación del verbo inglés
SHOULD TIGHTEN

Verbo regular: tighten - tightened - tightened

Afirmación

Forma simple	Forma con V-ing
I'd tighten you'd tighten he'd tighten we'd tighten you'd tighten they'd tighten	I'd be tightening you'd be tightening he'd be tightening we'd be tightening you'd be tightening they'd be tightening
Perfecto	Perfecto con V-ing
I should've tightened you should've tightened he should've tightened we should've tightened you should've tightened they should've tightened	I should've been tightening you should've been tightening he should've been tightening we should've been tightening you should've been tightening they should've been tightening

Negación

Forma simple	Forma con V-ing
I shouldn't tighten you shouldn't tighten he shouldn't tighten we shouldn't tighten you shouldn't tighten they shouldn't tighten	I shouldn't be tightening you shouldn't be tightening he shouldn't be tightening we shouldn't be tightening you shouldn't be tightening they shouldn't be tightening
Perfecto	Perfecto con V-ing
I shouldn't have tightened you shouldn't have tightened he shouldn't have tightened we shouldn't have tightened you shouldn't have tightened they shouldn't have tightened	I shouldn't have been tightening you shouldn't have been tightening he shouldn't have been tightening we shouldn't have been tightening you shouldn't have been tightening they shouldn't have been tightening

Forma interrogativa

Forma simple	Forma con V-ing
should I tighten? should you tighten? should he tighten? should we tighten? should you tighten? should they tighten?	should I be tightening? should you be tightening? should he be tightening? should we be tightening? should you be tightening? should they be tightening?
Perfecto	Perfecto con V-ing
should I have tightened? should you have tightened? should he have tightened? should we have tightened? should you have tightened? should they have tightened?	should I have been tightening? should you have been tightening? should he have been tightening? should we have been tightening? should you have been tightening? should they have been tightening?

Forma interro-negativa

Forma simple	Forma con V-ing
shouldn't I tighten? shouldn't you tighten? shouldn't he tighten? shouldn't we tighten? shouldn't you tighten? shouldn't they tighten?	shouldn't I be tightening? shouldn't you be tightening? shouldn't he be tightening? shouldn't we be tightening? shouldn't you be tightening? shouldn't they be tightening?
Perfecto	Perfecto con V-ing
shouldn't I have tightened? shouldn't you have tightened? shouldn't he have tightened? shouldn't we have tightened? shouldn't you have tightened? shouldn't they have tightened?	shouldn't I have been tightening? shouldn't you have been tightening? shouldn't he have been tightening? shouldn't we have been tightening? shouldn't you have been tightening? shouldn't they have been tightening?