must clatter
Verbo regular: clatter - clattered- clattered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must clatter
you must clatter
he must clatter
we must clatter
you must clatter
they must clatter 	I must be clattering
you must be clattering
he must be clattering
we must be clattering
you must be clattering
they must be clattering	I must have clattered
you must have clattered
he must have clattered
we must have clattered
you must have clattered
they must have clattered	I must have been clattering
you must have been clattering
he must have been clattering
we must have been clattering
you must have been clattering
they must have been clattering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not clatter
you must not clatter
he must not clatter
we must not clatter
you must not clatter
they must not clatter 	I must not be clattering
you must not be clattering
he must not be clattering
we must not be clattering
you must not be clattering
they must not be clattering	I must not have clattered
you must not have clattered
he must not have clattered
we must not have clattered
you must not have clattered
they must not have clattered	I must not have been clattering
you must not have been clattering
he must not have been clattering
we must not have been clattering
you must not have been clattering
they must not have been clattering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I clatter?
must you clatter?
must he clatter?
must we clatter?
must you clatter?
must they clatter? 	must I be clattering?
must you be clattering?
must he be clattering?
must we be clattering?
must you be clattering?
must they be clattering? 	must I have clattered?
must you have clattered?
must he have clattered?
must we have clattered?
must you have clattered?
must they have clattered? 	must I have been clattering?
must you have been clattering?
must he have been clattering?
must we have been clattering?
must you have been clattering?
must they have been clattering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not clatter?
must you not clatter?
must he not clatter?
must we not clatter?
must you not clatter?
must they not clatter? 	must I not be clattering?
must you not be clattering?
must he not be clattering?
must we not be clattering?
must you not be clattering?
must they not be clattering? 	must I not have clattered?
must you not have clattered?
must he not have clattered?
must we not have clattered?
must you not have clattered?
must they not have clattered? 	must I not have been clattering?
must you not have been clattering?
must he not have been clattering?
must we not have been clattering?
must you not have been clattering?
must they not have been clattering?