I must gradate you must gradate he must gradate we must gradate you must gradate they must gradate
V-ing form
I must be gradating you must be gradating he must be gradating we must be gradating you must be gradating they must be gradating
Perfect
I must have gradated you must have gradated he must have gradated we must have gradated you must have gradated they must have gradated
V-ing perfect
I must have been gradating you must have been gradating he must have been gradating we must have been gradating you must have been gradating they must have been gradating
Negation
Simple form
I must not gradate you must not gradate he must not gradate we must not gradate you must not gradate they must not gradate
V-ing form
I must not be gradating you must not be gradating he must not be gradating we must not be gradating you must not be gradating they must not be gradating
Perfect
I must not have gradated you must not have gradated he must not have gradated we must not have gradated you must not have gradated they must not have gradated
V-ing perfect
I must not have been gradating you must not have been gradating he must not have been gradating we must not have been gradating you must not have been gradating they must not have been gradating
Interrogative form
Simple form
must I gradate? must you gradate? must he gradate? must we gradate? must you gradate? must they gradate?
V-ing form
must I be gradating? must you be gradating? must he be gradating? must we be gradating? must you be gradating? must they be gradating?
Perfect
must I have gradated? must you have gradated? must he have gradated? must we have gradated? must you have gradated? must they have gradated?
V-ing perfect
must I have been gradating? must you have been gradating? must he have been gradating? must we have been gradating? must you have been gradating? must they have been gradating?
Interro-negative form
Simple form
must I not gradate? must you not gradate? must he not gradate? must we not gradate? must you not gradate? must they not gradate?
V-ing form
must I not be gradating? must you not be gradating? must he not be gradating? must we not be gradating? must you not be gradating? must they not be gradating?
Perfect
must I not have gradated? must you not have gradated? must he not have gradated? must we not have gradated? must you not have gradated? must they not have gradated?
V-ing perfect
must I not have been gradating? must you not have been gradating? must he not have been gradating? must we not have been gradating? must you not have been gradating? must they not have been gradating?