I must cackle you must cackle he must cackle we must cackle you must cackle they must cackle
Forma com V-ing
I must be cackling you must be cackling he must be cackling we must be cackling you must be cackling they must be cackling
Perfeito
I must have cackled you must have cackled he must have cackled we must have cackled you must have cackled they must have cackled
Perfeito com V-ing
I must have been cackling you must have been cackling he must have been cackling we must have been cackling you must have been cackling they must have been cackling
Negação
Forma simple
I must not cackle you must not cackle he must not cackle we must not cackle you must not cackle they must not cackle
Forma com V-ing
I must not be cackling you must not be cackling he must not be cackling we must not be cackling you must not be cackling they must not be cackling
Perfeito
I must not have cackled you must not have cackled he must not have cackled we must not have cackled you must not have cackled they must not have cackled
Perfeito com V-ing
I must not have been cackling you must not have been cackling he must not have been cackling we must not have been cackling you must not have been cackling they must not have been cackling
Forma interrogativa
Forma simple
must I cackle? must you cackle? must he cackle? must we cackle? must you cackle? must they cackle?
Forma com V-ing
must I be cackling? must you be cackling? must he be cackling? must we be cackling? must you be cackling? must they be cackling?
Perfeito
must I have cackled? must you have cackled? must he have cackled? must we have cackled? must you have cackled? must they have cackled?
Perfeito com V-ing
must I have been cackling? must you have been cackling? must he have been cackling? must we have been cackling? must you have been cackling? must they have been cackling?
Forma interro-Negação
Forma simple
must I not cackle? must you not cackle? must he not cackle? must we not cackle? must you not cackle? must they not cackle?
Forma com V-ing
must I not be cackling? must you not be cackling? must he not be cackling? must we not be cackling? must you not be cackling? must they not be cackling?
Perfeito
must I not have cackled? must you not have cackled? must he not have cackled? must we not have cackled? must you not have cackled? must they not have cackled?
Perfeito com V-ing
must I not have been cackling? must you not have been cackling? must he not have been cackling? must we not have been cackling? must you not have been cackling? must they not have been cackling?