I could modernise you could modernise he could modernise we could modernise you could modernise they could modernise
V-ing form
I could be modernising you could be modernising he could be modernising we could be modernising you could be modernising they could be modernising
Perfect
I could have modernised you could have modernised he could have modernised we could have modernised you could have modernised they could have modernised
V-ing perfect
I could have been modernising you could have been modernising he could have been modernising we could have been modernising you could have been modernising they could have been modernising
Negation
Simple form
I could not modernise you could not modernise he could not modernise we could not modernise you could not modernise they could not modernise
V-ing form
I could not be modernising you could not be modernising he could not be modernising we could not be modernising you could not be modernising they could not be modernising
Perfect
I could not have modernised you could not have modernised he could not have modernised we could not have modernised you could not have modernised they could not have modernised
V-ing perfect
I could not have been modernising you could not have been modernising he could not have been modernising we could not have been modernising you could not have been modernising they could not have been modernising
Interrogative form
Simple form
could I modernise? could you modernise? could he modernise? could we modernise? could you modernise? could they modernise?
V-ing form
could I be modernising? could you be modernising? could he be modernising? could we be modernising? could you be modernising? could they be modernising?
Perfect
could I have modernised? could you have modernised? could he have modernised? could we have modernised? could you have modernised? could they have modernised?
V-ing perfect
could I have been modernising? could you have been modernising? could he have been modernising? could we have been modernising? could you have been modernising? could they have been modernising?
Interro-negative form
Simple form
could I not modernise? could you not modernise? could he not modernise? could we not modernise? could you not modernise? could they not modernise?
V-ing form
could I not be modernising? could you not be modernising? could he not be modernising? could we not be modernising? could you not be modernising? could they not be modernising?
Perfect
could I not have modernised? could you not have modernised? could he not have modernised? could we not have modernised? could you not have modernised? could they not have modernised?
V-ing perfect
could I not have been modernising? could you not have been modernising? could he not have been modernising? could we not have been modernising? could you not have been modernising? could they not have been modernising?