I must assent you must assent she must assent we must assent you must assent they must assent
V-ing form
I must be assenting you must be assenting she must be assenting we must be assenting you must be assenting they must be assenting
Perfect
I must have assented you must have assented she must have assented we must have assented you must have assented they must have assented
V-ing perfect
I must have been assenting you must have been assenting she must have been assenting we must have been assenting you must have been assenting they must have been assenting
Negation
Simple form
I mustn't assent you mustn't assent she mustn't assent we mustn't assent you mustn't assent they mustn't assent
V-ing form
I mustn't be assenting you mustn't be assenting she mustn't be assenting we mustn't be assenting you mustn't be assenting they mustn't be assenting
Perfect
I mustn't have assented you mustn't have assented she mustn't have assented we mustn't have assented you mustn't have assented they mustn't have assented
V-ing perfect
I mustn't have been assenting you mustn't have been assenting she mustn't have been assenting we mustn't have been assenting you mustn't have been assenting they mustn't have been assenting
Interrogative form
Simple form
must I assent? must you assent? must she assent? must we assent? must you assent? must they assent?
V-ing form
must I be assenting? must you be assenting? must she be assenting? must we be assenting? must you be assenting? must they be assenting?
Perfect
must I have assented? must you have assented? must she have assented? must we have assented? must you have assented? must they have assented?
V-ing perfect
must I have been assenting? must you have been assenting? must she have been assenting? must we have been assenting? must you have been assenting? must they have been assenting?
Interro-negative form
Simple form
mustn't I assent? mustn't you assent? mustn't she assent? mustn't we assent? mustn't you assent? mustn't they assent?
V-ing form
mustn't I be assenting? mustn't you be assenting? mustn't she be assenting? mustn't we be assenting? mustn't you be assenting? mustn't they be assenting?
Perfect
mustn't I have assented? mustn't you have assented? mustn't she have assented? mustn't we have assented? mustn't you have assented? mustn't they have assented?
V-ing perfect
mustn't I have been assenting? mustn't you have been assenting? mustn't she have been assenting? mustn't we have been assenting? mustn't you have been assenting? mustn't they have been assenting?