male gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to
English verb conjugation MUST PREBOARD
Regular verb: preboard - preboarded - preboarded
Affirmation
Simple form
I must preboardyou must preboard
she must preboard
we must preboard
you must preboard
they must preboard
V-ing form
I must be preboardingyou must be preboarding
she must be preboarding
we must be preboarding
you must be preboarding
they must be preboarding
Perfect
I must have preboardedyou must have preboarded
she must have preboarded
we must have preboarded
you must have preboarded
they must have preboarded
V-ing perfect
I must have been preboardingyou must have been preboarding
she must have been preboarding
we must have been preboarding
you must have been preboarding
they must have been preboarding
Negation
Simple form
I must not preboardyou must not preboard
she must not preboard
we must not preboard
you must not preboard
they must not preboard
V-ing form
I must not be preboardingyou must not be preboarding
she must not be preboarding
we must not be preboarding
you must not be preboarding
they must not be preboarding
Perfect
I must not have preboardedyou must not have preboarded
she must not have preboarded
we must not have preboarded
you must not have preboarded
they must not have preboarded
V-ing perfect
I must not have been preboardingyou must not have been preboarding
she must not have been preboarding
we must not have been preboarding
you must not have been preboarding
they must not have been preboarding
Interrogative form
Simple form
must I preboard?must you preboard?
must she preboard?
must we preboard?
must you preboard?
must they preboard?
V-ing form
must I be preboarding?must you be preboarding?
must she be preboarding?
must we be preboarding?
must you be preboarding?
must they be preboarding?
Perfect
must I have preboarded?must you have preboarded?
must she have preboarded?
must we have preboarded?
must you have preboarded?
must they have preboarded?
V-ing perfect
must I have been preboarding?must you have been preboarding?
must she have been preboarding?
must we have been preboarding?
must you have been preboarding?
must they have been preboarding?
Interro-negative form
Simple form
must I not preboard?must you not preboard?
must she not preboard?
must we not preboard?
must you not preboard?
must they not preboard?
V-ing form
must I not be preboarding?must you not be preboarding?
must she not be preboarding?
must we not be preboarding?
must you not be preboarding?
must they not be preboarding?
Perfect
must I not have preboarded?must you not have preboarded?
must she not have preboarded?
must we not have preboarded?
must you not have preboarded?
must they not have preboarded?
V-ing perfect
must I not have been preboarding?must you not have been preboarding?
must she not have been preboarding?
must we not have been preboarding?
must you not have been preboarding?
must they not have been preboarding?