I must garden you must garden he must garden we must garden you must garden they must garden
V-ing form
I must be gardening you must be gardening he must be gardening we must be gardening you must be gardening they must be gardening
Perfect
I must have gardened you must have gardened he must have gardened we must have gardened you must have gardened they must have gardened
V-ing perfect
I must have been gardening you must have been gardening he must have been gardening we must have been gardening you must have been gardening they must have been gardening
Negation
Simple form
I must not garden you must not garden he must not garden we must not garden you must not garden they must not garden
V-ing form
I must not be gardening you must not be gardening he must not be gardening we must not be gardening you must not be gardening they must not be gardening
Perfect
I must not have gardened you must not have gardened he must not have gardened we must not have gardened you must not have gardened they must not have gardened
V-ing perfect
I must not have been gardening you must not have been gardening he must not have been gardening we must not have been gardening you must not have been gardening they must not have been gardening
Interrogative form
Simple form
must I garden? must you garden? must he garden? must we garden? must you garden? must they garden?
V-ing form
must I be gardening? must you be gardening? must he be gardening? must we be gardening? must you be gardening? must they be gardening?
Perfect
must I have gardened? must you have gardened? must he have gardened? must we have gardened? must you have gardened? must they have gardened?
V-ing perfect
must I have been gardening? must you have been gardening? must he have been gardening? must we have been gardening? must you have been gardening? must they have been gardening?
Interro-negative form
Simple form
must I not garden? must you not garden? must he not garden? must we not garden? must you not garden? must they not garden?
V-ing form
must I not be gardening? must you not be gardening? must he not be gardening? must we not be gardening? must you not be gardening? must they not be gardening?
Perfect
must I not have gardened? must you not have gardened? must he not have gardened? must we not have gardened? must you not have gardened? must they not have gardened?
V-ing perfect
must I not have been gardening? must you not have been gardening? must he not have been gardening? must we not have been gardening? must you not have been gardening? must they not have been gardening?