I could advertise you could advertise he could advertise we could advertise you could advertise they could advertise
Form mit V-ing
I could be advertising you could be advertising he could be advertising we could be advertising you could be advertising they could be advertising
Perfekt
I could have advertised you could have advertised he could have advertised we could have advertised you could have advertised they could have advertised
Perfekt mit V-ing
I could have been advertising you could have been advertising he could have been advertising we could have been advertising you could have been advertising they could have been advertising
Negation
Einfache Form
I couldn't advertise you couldn't advertise he couldn't advertise we couldn't advertise you couldn't advertise they couldn't advertise
Form mit V-ing
I couldn't be advertising you couldn't be advertising he couldn't be advertising we couldn't be advertising you couldn't be advertising they couldn't be advertising
Perfekt
I couldn't have advertised you couldn't have advertised he couldn't have advertised we couldn't have advertised you couldn't have advertised they couldn't have advertised
Perfekt mit V-ing
I couldn't have been advertising you couldn't have been advertising he couldn't have been advertising we couldn't have been advertising you couldn't have been advertising they couldn't have been advertising
Fragende Form
Einfache Form
could I advertise? could you advertise? could he advertise? could we advertise? could you advertise? could they advertise?
Form mit V-ing
could I be advertising? could you be advertising? could he be advertising? could we be advertising? could you be advertising? could they be advertising?
Perfekt
could I have advertised? could you have advertised? could he have advertised? could we have advertised? could you have advertised? could they have advertised?
Perfekt mit V-ing
could I have been advertising? could you have been advertising? could he have been advertising? could we have been advertising? could you have been advertising? could they have been advertising?
Fragende Negation Form
Einfache Form
couldn't I advertise? couldn't you advertise? couldn't he advertise? couldn't we advertise? couldn't you advertise? couldn't they advertise?
Form mit V-ing
couldn't I be advertising? couldn't you be advertising? couldn't he be advertising? couldn't we be advertising? couldn't you be advertising? couldn't they be advertising?
Perfekt
couldn't I have advertised? couldn't you have advertised? couldn't he have advertised? couldn't we have advertised? couldn't you have advertised? couldn't they have advertised?
Perfekt mit V-ing
couldn't I have been advertising? couldn't you have been advertising? couldn't he have been advertising? couldn't we have been advertising? couldn't you have been advertising? couldn't they have been advertising?