I must botanise you must botanise he must botanise we must botanise you must botanise they must botanise
V-ing form
I must be botanising you must be botanising he must be botanising we must be botanising you must be botanising they must be botanising
Perfect
I must have botanised you must have botanised he must have botanised we must have botanised you must have botanised they must have botanised
V-ing perfect
I must have been botanising you must have been botanising he must have been botanising we must have been botanising you must have been botanising they must have been botanising
Negation
Simple form
I must not botanise you must not botanise he must not botanise we must not botanise you must not botanise they must not botanise
V-ing form
I must not be botanising you must not be botanising he must not be botanising we must not be botanising you must not be botanising they must not be botanising
Perfect
I must not have botanised you must not have botanised he must not have botanised we must not have botanised you must not have botanised they must not have botanised
V-ing perfect
I must not have been botanising you must not have been botanising he must not have been botanising we must not have been botanising you must not have been botanising they must not have been botanising
Interrogative form
Simple form
must I botanise? must you botanise? must he botanise? must we botanise? must you botanise? must they botanise?
V-ing form
must I be botanising? must you be botanising? must he be botanising? must we be botanising? must you be botanising? must they be botanising?
Perfect
must I have botanised? must you have botanised? must he have botanised? must we have botanised? must you have botanised? must they have botanised?
V-ing perfect
must I have been botanising? must you have been botanising? must he have been botanising? must we have been botanising? must you have been botanising? must they have been botanising?
Interro-negative form
Simple form
must I not botanise? must you not botanise? must he not botanise? must we not botanise? must you not botanise? must they not botanise?
V-ing form
must I not be botanising? must you not be botanising? must he not be botanising? must we not be botanising? must you not be botanising? must they not be botanising?
Perfect
must I not have botanised? must you not have botanised? must he not have botanised? must we not have botanised? must you not have botanised? must they not have botanised?
V-ing perfect
must I not have been botanising? must you not have been botanising? must he not have been botanising? must we not have been botanising? must you not have been botanising? must they not have been botanising?