I must belch you must belch she must belch we must belch you must belch they must belch
Forme en V-ing
I must be belching you must be belching she must be belching we must be belching you must be belching they must be belching
Perfect
I must have belched you must have belched she must have belched we must have belched you must have belched they must have belched
Perfect en V-ing
I must have been belching you must have been belching she must have been belching we must have been belching you must have been belching they must have been belching
Négation
Forme simple
I must not belch you must not belch she must not belch we must not belch you must not belch they must not belch
Forme en V-ing
I must not be belching you must not be belching she must not be belching we must not be belching you must not be belching they must not be belching
Perfect
I must not have belched you must not have belched she must not have belched we must not have belched you must not have belched they must not have belched
Perfect en V-ing
I must not have been belching you must not have been belching she must not have been belching we must not have been belching you must not have been belching they must not have been belching
Forme interrogative
Forme simple
must I belch? must you belch? must she belch? must we belch? must you belch? must they belch?
Forme en V-ing
must I be belching? must you be belching? must she be belching? must we be belching? must you be belching? must they be belching?
Perfect
must I have belched? must you have belched? must she have belched? must we have belched? must you have belched? must they have belched?
Perfect en V-ing
must I have been belching? must you have been belching? must she have been belching? must we have been belching? must you have been belching? must they have been belching?
Forme interro-négative
Forme simple
must I not belch? must you not belch? must she not belch? must we not belch? must you not belch? must they not belch?
Forme en V-ing
must I not be belching? must you not be belching? must she not be belching? must we not be belching? must you not be belching? must they not be belching?
Perfect
must I not have belched? must you not have belched? must she not have belched? must we not have belched? must you not have belched? must they not have belched?
Perfect en V-ing
must I not have been belching? must you not have been belching? must she not have been belching? must we not have been belching? must you not have been belching? must they not have been belching?