I must assess you must assess she must assess we must assess you must assess they must assess
V-ing form
I must be assessing you must be assessing she must be assessing we must be assessing you must be assessing they must be assessing
Perfect
I must have assessed you must have assessed she must have assessed we must have assessed you must have assessed they must have assessed
V-ing perfect
I must have been assessing you must have been assessing she must have been assessing we must have been assessing you must have been assessing they must have been assessing
Negation
Simple form
I must not assess you must not assess she must not assess we must not assess you must not assess they must not assess
V-ing form
I must not be assessing you must not be assessing she must not be assessing we must not be assessing you must not be assessing they must not be assessing
Perfect
I must not have assessed you must not have assessed she must not have assessed we must not have assessed you must not have assessed they must not have assessed
V-ing perfect
I must not have been assessing you must not have been assessing she must not have been assessing we must not have been assessing you must not have been assessing they must not have been assessing
Interrogative form
Simple form
must I assess? must you assess? must she assess? must we assess? must you assess? must they assess?
V-ing form
must I be assessing? must you be assessing? must she be assessing? must we be assessing? must you be assessing? must they be assessing?
Perfect
must I have assessed? must you have assessed? must she have assessed? must we have assessed? must you have assessed? must they have assessed?
V-ing perfect
must I have been assessing? must you have been assessing? must she have been assessing? must we have been assessing? must you have been assessing? must they have been assessing?
Interro-negative form
Simple form
must I not assess? must you not assess? must she not assess? must we not assess? must you not assess? must they not assess?
V-ing form
must I not be assessing? must you not be assessing? must she not be assessing? must we not be assessing? must you not be assessing? must they not be assessing?
Perfect
must I not have assessed? must you not have assessed? must she not have assessed? must we not have assessed? must you not have assessed? must they not have assessed?
V-ing perfect
must I not have been assessing? must you not have been assessing? must she not have been assessing? must we not have been assessing? must you not have been assessing? must they not have been assessing?