must express
Verbo regular: express - expressed- expressed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must express
you must express
she must express
we must express
you must express
they must express 	I must be expressing
you must be expressing
she must be expressing
we must be expressing
you must be expressing
they must be expressing	I must have expressed
you must have expressed
she must have expressed
we must have expressed
you must have expressed
they must have expressed	I must have been expressing
you must have been expressing
she must have been expressing
we must have been expressing
you must have been expressing
they must have been expressing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not express
you must not express
she must not express
we must not express
you must not express
they must not express 	I must not be expressing
you must not be expressing
she must not be expressing
we must not be expressing
you must not be expressing
they must not be expressing	I must not have expressed
you must not have expressed
she must not have expressed
we must not have expressed
you must not have expressed
they must not have expressed	I must not have been expressing
you must not have been expressing
she must not have been expressing
we must not have been expressing
you must not have been expressing
they must not have been expressing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I express?
must you express?
must she express?
must we express?
must you express?
must they express? 	must I be expressing?
must you be expressing?
must she be expressing?
must we be expressing?
must you be expressing?
must they be expressing? 	must I have expressed?
must you have expressed?
must she have expressed?
must we have expressed?
must you have expressed?
must they have expressed? 	must I have been expressing?
must you have been expressing?
must she have been expressing?
must we have been expressing?
must you have been expressing?
must they have been expressing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not express?
must you not express?
must she not express?
must we not express?
must you not express?
must they not express? 	must I not be expressing?
must you not be expressing?
must she not be expressing?
must we not be expressing?
must you not be expressing?
must they not be expressing? 	must I not have expressed?
must you not have expressed?
must she not have expressed?
must we not have expressed?
must you not have expressed?
must they not have expressed? 	must I not have been expressing?
must you not have been expressing?
must she not have been expressing?
must we not have been expressing?
must you not have been expressing?
must they not have been expressing?