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