English verb conjugation
MUST PRACTISE

Regular verb: practise - practised - practised

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
I mustn't practise you mustn't practise he mustn't practise we mustn't practise you mustn't practise they mustn't practise	I mustn't be practising you mustn't be practising he mustn't be practising we mustn't be practising you mustn't be practising they mustn't be practising
Perfect	V-ing perfect
I mustn't have practised you mustn't have practised he mustn't have practised we mustn't have practised you mustn't have practised they mustn't have practised	I mustn't have been practising you mustn't have been practising he mustn't have been practising we mustn't have been practising you mustn't have been practising they mustn't have been practising

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
mustn't I practise? mustn't you practise? mustn't he practise? mustn't we practise? mustn't you practise? mustn't they practise?	mustn't I be practising? mustn't you be practising? mustn't he be practising? mustn't we be practising? mustn't you be practising? mustn't they be practising?
Perfect	V-ing perfect
mustn't I have practised? mustn't you have practised? mustn't he have practised? mustn't we have practised? mustn't you have practised? mustn't they have practised?	mustn't I have been practising? mustn't you have been practising? mustn't he have been practising? mustn't we have been practising? mustn't you have been practising? mustn't they have been practising?