I could giggle you could giggle he could giggle we could giggle you could giggle they could giggle
Forma con V-ing
I could be giggling you could be giggling he could be giggling we could be giggling you could be giggling they could be giggling
Perfecto
I could have giggled you could have giggled he could have giggled we could have giggled you could have giggled they could have giggled
Perfecto con V-ing
I could have been giggling you could have been giggling he could have been giggling we could have been giggling you could have been giggling they could have been giggling
Negación
Forma simple
I couldn't giggle you couldn't giggle he couldn't giggle we couldn't giggle you couldn't giggle they couldn't giggle
Forma con V-ing
I couldn't be giggling you couldn't be giggling he couldn't be giggling we couldn't be giggling you couldn't be giggling they couldn't be giggling
Perfecto
I couldn't have giggled you couldn't have giggled he couldn't have giggled we couldn't have giggled you couldn't have giggled they couldn't have giggled
Perfecto con V-ing
I couldn't have been giggling you couldn't have been giggling he couldn't have been giggling we couldn't have been giggling you couldn't have been giggling they couldn't have been giggling
Forma interrogativa
Forma simple
could I giggle? could you giggle? could he giggle? could we giggle? could you giggle? could they giggle?
Forma con V-ing
could I be giggling? could you be giggling? could he be giggling? could we be giggling? could you be giggling? could they be giggling?
Perfecto
could I have giggled? could you have giggled? could he have giggled? could we have giggled? could you have giggled? could they have giggled?
Perfecto con V-ing
could I have been giggling? could you have been giggling? could he have been giggling? could we have been giggling? could you have been giggling? could they have been giggling?
Forma interro-negativa
Forma simple
couldn't I giggle? couldn't you giggle? couldn't he giggle? couldn't we giggle? couldn't you giggle? couldn't they giggle?
Forma con V-ing
couldn't I be giggling? couldn't you be giggling? couldn't he be giggling? couldn't we be giggling? couldn't you be giggling? couldn't they be giggling?
Perfecto
couldn't I have giggled? couldn't you have giggled? couldn't he have giggled? couldn't we have giggled? couldn't you have giggled? couldn't they have giggled?
Perfecto con V-ing
couldn't I have been giggling? couldn't you have been giggling? couldn't he have been giggling? couldn't we have been giggling? couldn't you have been giggling? couldn't they have been giggling?