I must acclimatise you must acclimatise he must acclimatise we must acclimatise you must acclimatise they must acclimatise
V-ing form
I must be acclimatising you must be acclimatising he must be acclimatising we must be acclimatising you must be acclimatising they must be acclimatising
Perfect
I must have acclimatised you must have acclimatised he must have acclimatised we must have acclimatised you must have acclimatised they must have acclimatised
V-ing perfect
I must have been acclimatising you must have been acclimatising he must have been acclimatising we must have been acclimatising you must have been acclimatising they must have been acclimatising
Negation
Simple form
I mustn't acclimatise you mustn't acclimatise he mustn't acclimatise we mustn't acclimatise you mustn't acclimatise they mustn't acclimatise
V-ing form
I mustn't be acclimatising you mustn't be acclimatising he mustn't be acclimatising we mustn't be acclimatising you mustn't be acclimatising they mustn't be acclimatising
Perfect
I mustn't have acclimatised you mustn't have acclimatised he mustn't have acclimatised we mustn't have acclimatised you mustn't have acclimatised they mustn't have acclimatised
V-ing perfect
I mustn't have been acclimatising you mustn't have been acclimatising he mustn't have been acclimatising we mustn't have been acclimatising you mustn't have been acclimatising they mustn't have been acclimatising
Interrogative form
Simple form
must I acclimatise? must you acclimatise? must he acclimatise? must we acclimatise? must you acclimatise? must they acclimatise?
V-ing form
must I be acclimatising? must you be acclimatising? must he be acclimatising? must we be acclimatising? must you be acclimatising? must they be acclimatising?
Perfect
must I have acclimatised? must you have acclimatised? must he have acclimatised? must we have acclimatised? must you have acclimatised? must they have acclimatised?
V-ing perfect
must I have been acclimatising? must you have been acclimatising? must he have been acclimatising? must we have been acclimatising? must you have been acclimatising? must they have been acclimatising?
Interro-negative form
Simple form
mustn't I acclimatise? mustn't you acclimatise? mustn't he acclimatise? mustn't we acclimatise? mustn't you acclimatise? mustn't they acclimatise?
V-ing form
mustn't I be acclimatising? mustn't you be acclimatising? mustn't he be acclimatising? mustn't we be acclimatising? mustn't you be acclimatising? mustn't they be acclimatising?
Perfect
mustn't I have acclimatised? mustn't you have acclimatised? mustn't he have acclimatised? mustn't we have acclimatised? mustn't you have acclimatised? mustn't they have acclimatised?
V-ing perfect
mustn't I have been acclimatising? mustn't you have been acclimatising? mustn't he have been acclimatising? mustn't we have been acclimatising? mustn't you have been acclimatising? mustn't they have been acclimatising?