I must sellotape you must sellotape he must sellotape we must sellotape you must sellotape they must sellotape
V-ing form
I must be sellotaping you must be sellotaping he must be sellotaping we must be sellotaping you must be sellotaping they must be sellotaping
Perfect
I must have sellotaped you must have sellotaped he must have sellotaped we must have sellotaped you must have sellotaped they must have sellotaped
V-ing perfect
I must have been sellotaping you must have been sellotaping he must have been sellotaping we must have been sellotaping you must have been sellotaping they must have been sellotaping
Negation
Simple form
I must not sellotape you must not sellotape he must not sellotape we must not sellotape you must not sellotape they must not sellotape
V-ing form
I must not be sellotaping you must not be sellotaping he must not be sellotaping we must not be sellotaping you must not be sellotaping they must not be sellotaping
Perfect
I must not have sellotaped you must not have sellotaped he must not have sellotaped we must not have sellotaped you must not have sellotaped they must not have sellotaped
V-ing perfect
I must not have been sellotaping you must not have been sellotaping he must not have been sellotaping we must not have been sellotaping you must not have been sellotaping they must not have been sellotaping
Interrogative form
Simple form
must I sellotape? must you sellotape? must he sellotape? must we sellotape? must you sellotape? must they sellotape?
V-ing form
must I be sellotaping? must you be sellotaping? must he be sellotaping? must we be sellotaping? must you be sellotaping? must they be sellotaping?
Perfect
must I have sellotaped? must you have sellotaped? must he have sellotaped? must we have sellotaped? must you have sellotaped? must they have sellotaped?
V-ing perfect
must I have been sellotaping? must you have been sellotaping? must he have been sellotaping? must we have been sellotaping? must you have been sellotaping? must they have been sellotaping?
Interro-negative form
Simple form
must I not sellotape? must you not sellotape? must he not sellotape? must we not sellotape? must you not sellotape? must they not sellotape?
V-ing form
must I not be sellotaping? must you not be sellotaping? must he not be sellotaping? must we not be sellotaping? must you not be sellotaping? must they not be sellotaping?
Perfect
must I not have sellotaped? must you not have sellotaped? must he not have sellotaped? must we not have sellotaped? must you not have sellotaped? must they not have sellotaped?
V-ing perfect
must I not have been sellotaping? must you not have been sellotaping? must he not have been sellotaping? must we not have been sellotaping? must you not have been sellotaping? must they not have been sellotaping?