don't I trip? don't you trip? doesn't he trip? don't we trip? don't you trip? don't they trip?
Presente continuo
am I not tripping? aren't you tripping? isn't he tripping? aren't we tripping? aren't you tripping? aren't they tripping?
Pretérito
didn't I trip? didn't you trip? didn't he trip? didn't we trip? didn't you trip? didn't they trip?
Pretérito continuo
wasn't I tripping? weren't you tripping? wasn't he tripping? weren't we tripping? weren't you tripping? weren't they tripping?
Presente perfecto
haven't I tripped? haven't you tripped? hasn't he tripped? haven't we tripped? haven't you tripped? haven't they tripped?
Presente perfecto continuo
haven't I been tripping? haven't you been tripping? hasn't he been tripping? haven't we been tripping? haven't you been tripping? haven't they been tripping?
Pluscuamperfecto
hadn't I tripped? hadn't you tripped? hadn't he tripped? hadn't we tripped? hadn't you tripped? hadn't they tripped?
Pluscuamperfecto continuo
hadn't I been tripping? hadn't you been tripping? hadn't he been tripping? hadn't we been tripping? hadn't you been tripping? hadn't they been tripping?
Futuro simple
won't I trip? won't you trip? won't he trip? won't we trip? won't you trip? won't they trip?
Futuro continuo
won't I be tripping? won't you be tripping? won't he be tripping? won't we be tripping? won't you be tripping? won't they be tripping?
Futuro perfecto
won't I have tripped? won't you have tripped? won't he have tripped? won't we have tripped? won't you have tripped? won't they have tripped?
Futuro perfecto contínuo
won't I have been tripping? won't you have been tripping? won't he have been tripping? won't we have been tripping? won't you have been tripping? won't they have been tripping?
Condicional
Presente
wouldn't I trip? wouldn't you trip? wouldn't he trip? wouldn't we trip? wouldn't you trip? wouldn't they trip?
Presente continuo
wouldn't I be tripping? wouldn't you be tripping? wouldn't he be tripping? wouldn't we be tripping? wouldn't you be tripping? wouldn't they be tripping?
Passado
wouldn't I have tripped? wouldn't you have tripped? wouldn't he have tripped? wouldn't we have tripped? wouldn't you have tripped? wouldn't they have tripped?
Passado continuo
wouldn't I have been tripping? wouldn't you have been tripping? wouldn't he have been tripping? wouldn't we have been tripping? wouldn't you have been tripping? wouldn't they have been tripping?