Conjugação do verbo inglês
COULD LEAPFROG

Verbo regular: leapfrog - leapfroged - leapfroged

Afirmação

Forma simple	Forma com V-ing
I could leapfrog you could leapfrog he could leapfrog we could leapfrog you could leapfrog they could leapfrog	I could be leapfroging you could be leapfroging he could be leapfroging we could be leapfroging you could be leapfroging they could be leapfroging
Perfeito	Perfeito com V-ing
I could have leapfroged you could have leapfroged he could have leapfroged we could have leapfroged you could have leapfroged they could have leapfroged	I could have been leapfroging you could have been leapfroging he could have been leapfroging we could have been leapfroging you could have been leapfroging they could have been leapfroging

Negação

Forma simple	Forma com V-ing
I couldn't leapfrog you couldn't leapfrog he couldn't leapfrog we couldn't leapfrog you couldn't leapfrog they couldn't leapfrog	I couldn't be leapfroging you couldn't be leapfroging he couldn't be leapfroging we couldn't be leapfroging you couldn't be leapfroging they couldn't be leapfroging
Perfeito	Perfeito com V-ing
I couldn't have leapfroged you couldn't have leapfroged he couldn't have leapfroged we couldn't have leapfroged you couldn't have leapfroged they couldn't have leapfroged	I couldn't have been leapfroging you couldn't have been leapfroging he couldn't have been leapfroging we couldn't have been leapfroging you couldn't have been leapfroging they couldn't have been leapfroging

Forma interrogativa

Forma simple	Forma com V-ing
could I leapfrog? could you leapfrog? could he leapfrog? could we leapfrog? could you leapfrog? could they leapfrog?	could I be leapfroging? could you be leapfroging? could he be leapfroging? could we be leapfroging? could you be leapfroging? could they be leapfroging?
Perfeito	Perfeito com V-ing
could I have leapfroged? could you have leapfroged? could he have leapfroged? could we have leapfroged? could you have leapfroged? could they have leapfroged?	could I have been leapfroging? could you have been leapfroging? could he have been leapfroging? could we have been leapfroging? could you have been leapfroging? could they have been leapfroging?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I leapfrog? couldn't you leapfrog? couldn't he leapfrog? couldn't we leapfrog? couldn't you leapfrog? couldn't they leapfrog?	couldn't I be leapfroging? couldn't you be leapfroging? couldn't he be leapfroging? couldn't we be leapfroging? couldn't you be leapfroging? couldn't they be leapfroging?
Perfeito	Perfeito com V-ing
couldn't I have leapfroged? couldn't you have leapfroged? couldn't he have leapfroged? couldn't we have leapfroged? couldn't you have leapfroged? couldn't they have leapfroged?	couldn't I have been leapfroging? couldn't you have been leapfroging? couldn't he have been leapfroging? couldn't we have been leapfroging? couldn't you have been leapfroging? couldn't they have been leapfroging?