I could americanise you could americanise he could americanise we could americanise you could americanise they could americanise
V-ing form
I could be americanising you could be americanising he could be americanising we could be americanising you could be americanising they could be americanising
Perfect
I could have americanised you could have americanised he could have americanised we could have americanised you could have americanised they could have americanised
V-ing perfect
I could have been americanising you could have been americanising he could have been americanising we could have been americanising you could have been americanising they could have been americanising
Negation
Simple form
I couldn't americanise you couldn't americanise he couldn't americanise we couldn't americanise you couldn't americanise they couldn't americanise
V-ing form
I couldn't be americanising you couldn't be americanising he couldn't be americanising we couldn't be americanising you couldn't be americanising they couldn't be americanising
Perfect
I couldn't have americanised you couldn't have americanised he couldn't have americanised we couldn't have americanised you couldn't have americanised they couldn't have americanised
V-ing perfect
I couldn't have been americanising you couldn't have been americanising he couldn't have been americanising we couldn't have been americanising you couldn't have been americanising they couldn't have been americanising
Interrogative form
Simple form
could I americanise? could you americanise? could he americanise? could we americanise? could you americanise? could they americanise?
V-ing form
could I be americanising? could you be americanising? could he be americanising? could we be americanising? could you be americanising? could they be americanising?
Perfect
could I have americanised? could you have americanised? could he have americanised? could we have americanised? could you have americanised? could they have americanised?
V-ing perfect
could I have been americanising? could you have been americanising? could he have been americanising? could we have been americanising? could you have been americanising? could they have been americanising?
Interro-negative form
Simple form
couldn't I americanise? couldn't you americanise? couldn't he americanise? couldn't we americanise? couldn't you americanise? couldn't they americanise?
V-ing form
couldn't I be americanising? couldn't you be americanising? couldn't he be americanising? couldn't we be americanising? couldn't you be americanising? couldn't they be americanising?
Perfect
couldn't I have americanised? couldn't you have americanised? couldn't he have americanised? couldn't we have americanised? couldn't you have americanised? couldn't they have americanised?
V-ing perfect
couldn't I have been americanising? couldn't you have been americanising? couldn't he have been americanising? couldn't we have been americanising? couldn't you have been americanising? couldn't they have been americanising?