Conjugación del verbo inglés
COULD UNDERMINE

Verbo regular: undermine - undermined - undermined

Afirmación

Forma simple	Forma con V-ing
I could undermine you could undermine he could undermine we could undermine you could undermine they could undermine	I could be undermining you could be undermining he could be undermining we could be undermining you could be undermining they could be undermining
Perfecto	Perfecto con V-ing
I could have undermined you could have undermined he could have undermined we could have undermined you could have undermined they could have undermined	I could have been undermining you could have been undermining he could have been undermining we could have been undermining you could have been undermining they could have been undermining

Negación

Forma simple	Forma con V-ing
I couldn't undermine you couldn't undermine he couldn't undermine we couldn't undermine you couldn't undermine they couldn't undermine	I couldn't be undermining you couldn't be undermining he couldn't be undermining we couldn't be undermining you couldn't be undermining they couldn't be undermining
Perfecto	Perfecto con V-ing
I couldn't have undermined you couldn't have undermined he couldn't have undermined we couldn't have undermined you couldn't have undermined they couldn't have undermined	I couldn't have been undermining you couldn't have been undermining he couldn't have been undermining we couldn't have been undermining you couldn't have been undermining they couldn't have been undermining

Forma interrogativa

Forma simple	Forma con V-ing
could I undermine? could you undermine? could he undermine? could we undermine? could you undermine? could they undermine?	could I be undermining? could you be undermining? could he be undermining? could we be undermining? could you be undermining? could they be undermining?
Perfecto	Perfecto con V-ing
could I have undermined? could you have undermined? could he have undermined? could we have undermined? could you have undermined? could they have undermined?	could I have been undermining? could you have been undermining? could he have been undermining? could we have been undermining? could you have been undermining? could they have been undermining?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I undermine? couldn't you undermine? couldn't he undermine? couldn't we undermine? couldn't you undermine? couldn't they undermine?	couldn't I be undermining? couldn't you be undermining? couldn't he be undermining? couldn't we be undermining? couldn't you be undermining? couldn't they be undermining?
Perfecto	Perfecto con V-ing
couldn't I have undermined? couldn't you have undermined? couldn't he have undermined? couldn't we have undermined? couldn't you have undermined? couldn't they have undermined?	couldn't I have been undermining? couldn't you have been undermining? couldn't he have been undermining? couldn't we have been undermining? couldn't you have been undermining? couldn't they have been undermining?