must practise
Verbo regular: practise - practised- practised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must practise
you must practise
he must practise
we must practise
you must practise
they must practise 	I must be practising
you must be practising
he must be practising
we must be practising
you must be practising
they must be practising	I must have practised
you must have practised
he must have practised
we must have practised
you must have practised
they must have practised	I must have been practising
you must have been practising
he must have been practising
we must have been practising
you must have been practising
they must have been practising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not practise
you must not practise
he must not practise
we must not practise
you must not practise
they must not practise 	I must not be practising
you must not be practising
he must not be practising
we must not be practising
you must not be practising
they must not be practising	I must not have practised
you must not have practised
he must not have practised
we must not have practised
you must not have practised
they must not have practised	I must not have been practising
you must not have been practising
he must not have been practising
we must not have been practising
you must not have been practising
they must not have been practising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I practise?
must you practise?
must he practise?
must we practise?
must you practise?
must they practise? 	must I be practising?
must you be practising?
must he be practising?
must we be practising?
must you be practising?
must they be practising? 	must I have practised?
must you have practised?
must he have practised?
must we have practised?
must you have practised?
must they have practised? 	must I have been practising?
must you have been practising?
must he have been practising?
must we have been practising?
must you have been practising?
must they have been practising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not practise?
must you not practise?
must he not practise?
must we not practise?
must you not practise?
must they not practise? 	must I not be practising?
must you not be practising?
must he not be practising?
must we not be practising?
must you not be practising?
must they not be practising? 	must I not have practised?
must you not have practised?
must he not have practised?
must we not have practised?
must you not have practised?
must they not have practised? 	must I not have been practising?
must you not have been practising?
must he not have been practising?
must we not have been practising?
must you not have been practising?
must they not have been practising?