must yield
Verbo regular: yield - yielded- yielded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must yield
you must yield
he must yield
we must yield
you must yield
they must yield 	I must be yielding
you must be yielding
he must be yielding
we must be yielding
you must be yielding
they must be yielding	I must have yielded
you must have yielded
he must have yielded
we must have yielded
you must have yielded
they must have yielded	I must have been yielding
you must have been yielding
he must have been yielding
we must have been yielding
you must have been yielding
they must have been yielding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not yield
you must not yield
he must not yield
we must not yield
you must not yield
they must not yield 	I must not be yielding
you must not be yielding
he must not be yielding
we must not be yielding
you must not be yielding
they must not be yielding	I must not have yielded
you must not have yielded
he must not have yielded
we must not have yielded
you must not have yielded
they must not have yielded	I must not have been yielding
you must not have been yielding
he must not have been yielding
we must not have been yielding
you must not have been yielding
they must not have been yielding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I yield?
must you yield?
must he yield?
must we yield?
must you yield?
must they yield? 	must I be yielding?
must you be yielding?
must he be yielding?
must we be yielding?
must you be yielding?
must they be yielding? 	must I have yielded?
must you have yielded?
must he have yielded?
must we have yielded?
must you have yielded?
must they have yielded? 	must I have been yielding?
must you have been yielding?
must he have been yielding?
must we have been yielding?
must you have been yielding?
must they have been yielding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not yield?
must you not yield?
must he not yield?
must we not yield?
must you not yield?
must they not yield? 	must I not be yielding?
must you not be yielding?
must he not be yielding?
must we not be yielding?
must you not be yielding?
must they not be yielding? 	must I not have yielded?
must you not have yielded?
must he not have yielded?
must we not have yielded?
must you not have yielded?
must they not have yielded? 	must I not have been yielding?
must you not have been yielding?
must he not have been yielding?
must we not have been yielding?
must you not have been yielding?
must they not have been yielding?