must buy
Verbo irregolare: buy - bought- bought

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must buy
you must buy
he must buy
we must buy
you must buy
they must buy 	I must be buying
you must be buying
he must be buying
we must be buying
you must be buying
they must be buying	I must have bought
you must have bought
he must have bought
we must have bought
you must have bought
they must have bought	I must have been buying
you must have been buying
he must have been buying
we must have been buying
you must have been buying
they must have been buying	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not buy
you must not buy
he must not buy
we must not buy
you must not buy
they must not buy 	I must not be buying
you must not be buying
he must not be buying
we must not be buying
you must not be buying
they must not be buying	I must not have bought
you must not have bought
he must not have bought
we must not have bought
you must not have bought
they must not have bought	I must not have been buying
you must not have been buying
he must not have been buying
we must not have been buying
you must not have been buying
they must not have been buying	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I buy?
must you buy?
must he buy?
must we buy?
must you buy?
must they buy? 	must I be buying?
must you be buying?
must he be buying?
must we be buying?
must you be buying?
must they be buying? 	must I have bought?
must you have bought?
must he have bought?
must we have bought?
must you have bought?
must they have bought? 	must I have been buying?
must you have been buying?
must he have been buying?
must we have been buying?
must you have been buying?
must they have been buying? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not buy?
must you not buy?
must he not buy?
must we not buy?
must you not buy?
must they not buy? 	must I not be buying?
must you not be buying?
must he not be buying?
must we not be buying?
must you not be buying?
must they not be buying? 	must I not have bought?
must you not have bought?
must he not have bought?
must we not have bought?
must you not have bought?
must they not have bought? 	must I not have been buying?
must you not have been buying?
must he not have been buying?
must we not have been buying?
must you not have been buying?
must they not have been buying?