I must rush you must rush she must rush we must rush you must rush they must rush
V-ing form
I must be rushing you must be rushing she must be rushing we must be rushing you must be rushing they must be rushing
Perfect
I must have rushed you must have rushed she must have rushed we must have rushed you must have rushed they must have rushed
V-ing perfect
I must have been rushing you must have been rushing she must have been rushing we must have been rushing you must have been rushing they must have been rushing
Negation
Simple form
I must not rush you must not rush she must not rush we must not rush you must not rush they must not rush
V-ing form
I must not be rushing you must not be rushing she must not be rushing we must not be rushing you must not be rushing they must not be rushing
Perfect
I must not have rushed you must not have rushed she must not have rushed we must not have rushed you must not have rushed they must not have rushed
V-ing perfect
I must not have been rushing you must not have been rushing she must not have been rushing we must not have been rushing you must not have been rushing they must not have been rushing
Interrogative form
Simple form
must I rush? must you rush? must she rush? must we rush? must you rush? must they rush?
V-ing form
must I be rushing? must you be rushing? must she be rushing? must we be rushing? must you be rushing? must they be rushing?
Perfect
must I have rushed? must you have rushed? must she have rushed? must we have rushed? must you have rushed? must they have rushed?
V-ing perfect
must I have been rushing? must you have been rushing? must she have been rushing? must we have been rushing? must you have been rushing? must they have been rushing?
Interro-negative form
Simple form
must I not rush? must you not rush? must she not rush? must we not rush? must you not rush? must they not rush?
V-ing form
must I not be rushing? must you not be rushing? must she not be rushing? must we not be rushing? must you not be rushing? must they not be rushing?
Perfect
must I not have rushed? must you not have rushed? must she not have rushed? must we not have rushed? must you not have rushed? must they not have rushed?
V-ing perfect
must I not have been rushing? must you not have been rushing? must she not have been rushing? must we not have been rushing? must you not have been rushing? must they not have been rushing?