I must dance you must dance she must dance we must dance you must dance they must dance
V-ing form
I must be dancing you must be dancing she must be dancing we must be dancing you must be dancing they must be dancing
Perfect
I must have danced you must have danced she must have danced we must have danced you must have danced they must have danced
V-ing perfect
I must have been dancing you must have been dancing she must have been dancing we must have been dancing you must have been dancing they must have been dancing
Negation
Simple form
I must not dance you must not dance she must not dance we must not dance you must not dance they must not dance
V-ing form
I must not be dancing you must not be dancing she must not be dancing we must not be dancing you must not be dancing they must not be dancing
Perfect
I must not have danced you must not have danced she must not have danced we must not have danced you must not have danced they must not have danced
V-ing perfect
I must not have been dancing you must not have been dancing she must not have been dancing we must not have been dancing you must not have been dancing they must not have been dancing
Interrogative form
Simple form
must I dance? must you dance? must she dance? must we dance? must you dance? must they dance?
V-ing form
must I be dancing? must you be dancing? must she be dancing? must we be dancing? must you be dancing? must they be dancing?
Perfect
must I have danced? must you have danced? must she have danced? must we have danced? must you have danced? must they have danced?
V-ing perfect
must I have been dancing? must you have been dancing? must she have been dancing? must we have been dancing? must you have been dancing? must they have been dancing?
Interro-negative form
Simple form
must I not dance? must you not dance? must she not dance? must we not dance? must you not dance? must they not dance?
V-ing form
must I not be dancing? must you not be dancing? must she not be dancing? must we not be dancing? must you not be dancing? must they not be dancing?
Perfect
must I not have danced? must you not have danced? must she not have danced? must we not have danced? must you not have danced? must they not have danced?
V-ing perfect
must I not have been dancing? must you not have been dancing? must she not have been dancing? must we not have been dancing? must you not have been dancing? must they not have been dancing?