I must intensify you must intensify he must intensify we must intensify you must intensify they must intensify
V-ing form
I must be intensifying you must be intensifying he must be intensifying we must be intensifying you must be intensifying they must be intensifying
Perfect
I must have intensified you must have intensified he must have intensified we must have intensified you must have intensified they must have intensified
V-ing perfect
I must have been intensifying you must have been intensifying he must have been intensifying we must have been intensifying you must have been intensifying they must have been intensifying
Negation
Simple form
I must not intensify you must not intensify he must not intensify we must not intensify you must not intensify they must not intensify
V-ing form
I must not be intensifying you must not be intensifying he must not be intensifying we must not be intensifying you must not be intensifying they must not be intensifying
Perfect
I must not have intensified you must not have intensified he must not have intensified we must not have intensified you must not have intensified they must not have intensified
V-ing perfect
I must not have been intensifying you must not have been intensifying he must not have been intensifying we must not have been intensifying you must not have been intensifying they must not have been intensifying
Interrogative form
Simple form
must I intensify? must you intensify? must he intensify? must we intensify? must you intensify? must they intensify?
V-ing form
must I be intensifying? must you be intensifying? must he be intensifying? must we be intensifying? must you be intensifying? must they be intensifying?
Perfect
must I have intensified? must you have intensified? must he have intensified? must we have intensified? must you have intensified? must they have intensified?
V-ing perfect
must I have been intensifying? must you have been intensifying? must he have been intensifying? must we have been intensifying? must you have been intensifying? must they have been intensifying?
Interro-negative form
Simple form
must I not intensify? must you not intensify? must he not intensify? must we not intensify? must you not intensify? must they not intensify?
V-ing form
must I not be intensifying? must you not be intensifying? must he not be intensifying? must we not be intensifying? must you not be intensifying? must they not be intensifying?
Perfect
must I not have intensified? must you not have intensified? must he not have intensified? must we not have intensified? must you not have intensified? must they not have intensified?
V-ing perfect
must I not have been intensifying? must you not have been intensifying? must he not have been intensifying? must we not have been intensifying? must you not have been intensifying? must they not have been intensifying?