must inquire
Verbo regular: inquire - inquired- inquired

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must inquire
you must inquire
he must inquire
we must inquire
you must inquire
they must inquire 	I must be inquiring
you must be inquiring
he must be inquiring
we must be inquiring
you must be inquiring
they must be inquiring	I must have inquired
you must have inquired
he must have inquired
we must have inquired
you must have inquired
they must have inquired	I must have been inquiring
you must have been inquiring
he must have been inquiring
we must have been inquiring
you must have been inquiring
they must have been inquiring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't inquire
you mustn't inquire
he mustn't inquire
we mustn't inquire
you mustn't inquire
they mustn't inquire 	I mustn't be inquiring
you mustn't be inquiring
he mustn't be inquiring
we mustn't be inquiring
you mustn't be inquiring
they mustn't be inquiring	I mustn't have inquired
you mustn't have inquired
he mustn't have inquired
we mustn't have inquired
you mustn't have inquired
they mustn't have inquired	I mustn't have been inquiring
you mustn't have been inquiring
he mustn't have been inquiring
we mustn't have been inquiring
you mustn't have been inquiring
they mustn't have been inquiring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I inquire?
must you inquire?
must he inquire?
must we inquire?
must you inquire?
must they inquire? 	must I be inquiring?
must you be inquiring?
must he be inquiring?
must we be inquiring?
must you be inquiring?
must they be inquiring? 	must I have inquired?
must you have inquired?
must he have inquired?
must we have inquired?
must you have inquired?
must they have inquired? 	must I have been inquiring?
must you have been inquiring?
must he have been inquiring?
must we have been inquiring?
must you have been inquiring?
must they have been inquiring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I inquire?
mustn't you inquire?
mustn't he inquire?
mustn't we inquire?
mustn't you inquire?
mustn't they inquire? 	mustn't I be inquiring?
mustn't you be inquiring?
mustn't he be inquiring?
mustn't we be inquiring?
mustn't you be inquiring?
mustn't they be inquiring? 	mustn't I have inquired?
mustn't you have inquired?
mustn't he have inquired?
mustn't we have inquired?
mustn't you have inquired?
mustn't they have inquired? 	mustn't I have been inquiring?
mustn't you have been inquiring?
mustn't he have been inquiring?
mustn't we have been inquiring?
mustn't you have been inquiring?
mustn't they have been inquiring?