must winnow
Verbo regular: winnow - winnowed- winnowed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must winnow
you must winnow
he must winnow
we must winnow
you must winnow
they must winnow 	I must be winnowing
you must be winnowing
he must be winnowing
we must be winnowing
you must be winnowing
they must be winnowing	I must have winnowed
you must have winnowed
he must have winnowed
we must have winnowed
you must have winnowed
they must have winnowed	I must have been winnowing
you must have been winnowing
he must have been winnowing
we must have been winnowing
you must have been winnowing
they must have been winnowing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not winnow
you must not winnow
he must not winnow
we must not winnow
you must not winnow
they must not winnow 	I must not be winnowing
you must not be winnowing
he must not be winnowing
we must not be winnowing
you must not be winnowing
they must not be winnowing	I must not have winnowed
you must not have winnowed
he must not have winnowed
we must not have winnowed
you must not have winnowed
they must not have winnowed	I must not have been winnowing
you must not have been winnowing
he must not have been winnowing
we must not have been winnowing
you must not have been winnowing
they must not have been winnowing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I winnow?
must you winnow?
must he winnow?
must we winnow?
must you winnow?
must they winnow? 	must I be winnowing?
must you be winnowing?
must he be winnowing?
must we be winnowing?
must you be winnowing?
must they be winnowing? 	must I have winnowed?
must you have winnowed?
must he have winnowed?
must we have winnowed?
must you have winnowed?
must they have winnowed? 	must I have been winnowing?
must you have been winnowing?
must he have been winnowing?
must we have been winnowing?
must you have been winnowing?
must they have been winnowing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not winnow?
must you not winnow?
must he not winnow?
must we not winnow?
must you not winnow?
must they not winnow? 	must I not be winnowing?
must you not be winnowing?
must he not be winnowing?
must we not be winnowing?
must you not be winnowing?
must they not be winnowing? 	must I not have winnowed?
must you not have winnowed?
must he not have winnowed?
must we not have winnowed?
must you not have winnowed?
must they not have winnowed? 	must I not have been winnowing?
must you not have been winnowing?
must he not have been winnowing?
must we not have been winnowing?
must you not have been winnowing?
must they not have been winnowing?