I must impose you must impose he must impose we must impose you must impose they must impose
V-ing form
I must be imposing you must be imposing he must be imposing we must be imposing you must be imposing they must be imposing
Perfect
I must have imposed you must have imposed he must have imposed we must have imposed you must have imposed they must have imposed
V-ing perfect
I must have been imposing you must have been imposing he must have been imposing we must have been imposing you must have been imposing they must have been imposing
Negation
Simple form
I must not impose you must not impose he must not impose we must not impose you must not impose they must not impose
V-ing form
I must not be imposing you must not be imposing he must not be imposing we must not be imposing you must not be imposing they must not be imposing
Perfect
I must not have imposed you must not have imposed he must not have imposed we must not have imposed you must not have imposed they must not have imposed
V-ing perfect
I must not have been imposing you must not have been imposing he must not have been imposing we must not have been imposing you must not have been imposing they must not have been imposing
Interrogative form
Simple form
must I impose? must you impose? must he impose? must we impose? must you impose? must they impose?
V-ing form
must I be imposing? must you be imposing? must he be imposing? must we be imposing? must you be imposing? must they be imposing?
Perfect
must I have imposed? must you have imposed? must he have imposed? must we have imposed? must you have imposed? must they have imposed?
V-ing perfect
must I have been imposing? must you have been imposing? must he have been imposing? must we have been imposing? must you have been imposing? must they have been imposing?
Interro-negative form
Simple form
must I not impose? must you not impose? must he not impose? must we not impose? must you not impose? must they not impose?
V-ing form
must I not be imposing? must you not be imposing? must he not be imposing? must we not be imposing? must you not be imposing? must they not be imposing?
Perfect
must I not have imposed? must you not have imposed? must he not have imposed? must we not have imposed? must you not have imposed? must they not have imposed?
V-ing perfect
must I not have been imposing? must you not have been imposing? must he not have been imposing? must we not have been imposing? must you not have been imposing? must they not have been imposing?