I must amplify you must amplify he must amplify we must amplify you must amplify they must amplify
V-ing form
I must be amplifying you must be amplifying he must be amplifying we must be amplifying you must be amplifying they must be amplifying
Perfect
I must have amplified you must have amplified he must have amplified we must have amplified you must have amplified they must have amplified
V-ing perfect
I must have been amplifying you must have been amplifying he must have been amplifying we must have been amplifying you must have been amplifying they must have been amplifying
Negation
Simple form
I mustn't amplify you mustn't amplify he mustn't amplify we mustn't amplify you mustn't amplify they mustn't amplify
V-ing form
I mustn't be amplifying you mustn't be amplifying he mustn't be amplifying we mustn't be amplifying you mustn't be amplifying they mustn't be amplifying
Perfect
I mustn't have amplified you mustn't have amplified he mustn't have amplified we mustn't have amplified you mustn't have amplified they mustn't have amplified
V-ing perfect
I mustn't have been amplifying you mustn't have been amplifying he mustn't have been amplifying we mustn't have been amplifying you mustn't have been amplifying they mustn't have been amplifying
Interrogative form
Simple form
must I amplify? must you amplify? must he amplify? must we amplify? must you amplify? must they amplify?
V-ing form
must I be amplifying? must you be amplifying? must he be amplifying? must we be amplifying? must you be amplifying? must they be amplifying?
Perfect
must I have amplified? must you have amplified? must he have amplified? must we have amplified? must you have amplified? must they have amplified?
V-ing perfect
must I have been amplifying? must you have been amplifying? must he have been amplifying? must we have been amplifying? must you have been amplifying? must they have been amplifying?
Interro-negative form
Simple form
mustn't I amplify? mustn't you amplify? mustn't he amplify? mustn't we amplify? mustn't you amplify? mustn't they amplify?
V-ing form
mustn't I be amplifying? mustn't you be amplifying? mustn't he be amplifying? mustn't we be amplifying? mustn't you be amplifying? mustn't they be amplifying?
Perfect
mustn't I have amplified? mustn't you have amplified? mustn't he have amplified? mustn't we have amplified? mustn't you have amplified? mustn't they have amplified?
V-ing perfect
mustn't I have been amplifying? mustn't you have been amplifying? mustn't he have been amplifying? mustn't we have been amplifying? mustn't you have been amplifying? mustn't they have been amplifying?