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