must examine
Verbo regular: examine - examined- examined

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must examine
you must examine
he must examine
we must examine
you must examine
they must examine 	I must be examining
you must be examining
he must be examining
we must be examining
you must be examining
they must be examining	I must have examined
you must have examined
he must have examined
we must have examined
you must have examined
they must have examined	I must have been examining
you must have been examining
he must have been examining
we must have been examining
you must have been examining
they must have been examining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't examine
you mustn't examine
he mustn't examine
we mustn't examine
you mustn't examine
they mustn't examine 	I mustn't be examining
you mustn't be examining
he mustn't be examining
we mustn't be examining
you mustn't be examining
they mustn't be examining	I mustn't have examined
you mustn't have examined
he mustn't have examined
we mustn't have examined
you mustn't have examined
they mustn't have examined	I mustn't have been examining
you mustn't have been examining
he mustn't have been examining
we mustn't have been examining
you mustn't have been examining
they mustn't have been examining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I examine?
must you examine?
must he examine?
must we examine?
must you examine?
must they examine? 	must I be examining?
must you be examining?
must he be examining?
must we be examining?
must you be examining?
must they be examining? 	must I have examined?
must you have examined?
must he have examined?
must we have examined?
must you have examined?
must they have examined? 	must I have been examining?
must you have been examining?
must he have been examining?
must we have been examining?
must you have been examining?
must they have been examining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I examine?
mustn't you examine?
mustn't he examine?
mustn't we examine?
mustn't you examine?
mustn't they examine? 	mustn't I be examining?
mustn't you be examining?
mustn't he be examining?
mustn't we be examining?
mustn't you be examining?
mustn't they be examining? 	mustn't I have examined?
mustn't you have examined?
mustn't he have examined?
mustn't we have examined?
mustn't you have examined?
mustn't they have examined? 	mustn't I have been examining?
mustn't you have been examining?
mustn't he have been examining?
mustn't we have been examining?
mustn't you have been examining?
mustn't they have been examining?