female gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to
English verb conjugation MUST LAUGH
Regular verb: laugh - laughed - laughed
Affirmation
Simple form
I must laughyou must laugh
he must laugh
we must laugh
you must laugh
they must laugh
V-ing form
I must be laughingyou must be laughing
he must be laughing
we must be laughing
you must be laughing
they must be laughing
Perfect
I must have laughedyou must have laughed
he must have laughed
we must have laughed
you must have laughed
they must have laughed
V-ing perfect
I must have been laughingyou must have been laughing
he must have been laughing
we must have been laughing
you must have been laughing
they must have been laughing
Negation
Simple form
I mustn't laughyou mustn't laugh
he mustn't laugh
we mustn't laugh
you mustn't laugh
they mustn't laugh
V-ing form
I mustn't be laughingyou mustn't be laughing
he mustn't be laughing
we mustn't be laughing
you mustn't be laughing
they mustn't be laughing
Perfect
I mustn't have laughedyou mustn't have laughed
he mustn't have laughed
we mustn't have laughed
you mustn't have laughed
they mustn't have laughed
V-ing perfect
I mustn't have been laughingyou mustn't have been laughing
he mustn't have been laughing
we mustn't have been laughing
you mustn't have been laughing
they mustn't have been laughing
Interrogative form
Simple form
must I laugh?must you laugh?
must he laugh?
must we laugh?
must you laugh?
must they laugh?
V-ing form
must I be laughing?must you be laughing?
must he be laughing?
must we be laughing?
must you be laughing?
must they be laughing?
Perfect
must I have laughed?must you have laughed?
must he have laughed?
must we have laughed?
must you have laughed?
must they have laughed?
V-ing perfect
must I have been laughing?must you have been laughing?
must he have been laughing?
must we have been laughing?
must you have been laughing?
must they have been laughing?
Interro-negative form
Simple form
mustn't I laugh?mustn't you laugh?
mustn't he laugh?
mustn't we laugh?
mustn't you laugh?
mustn't they laugh?
V-ing form
mustn't I be laughing?mustn't you be laughing?
mustn't he be laughing?
mustn't we be laughing?
mustn't you be laughing?
mustn't they be laughing?
Perfect
mustn't I have laughed?mustn't you have laughed?
mustn't he have laughed?
mustn't we have laughed?
mustn't you have laughed?
mustn't they have laughed?
V-ing perfect
mustn't I have been laughing?mustn't you have been laughing?
mustn't he have been laughing?
mustn't we have been laughing?
mustn't you have been laughing?
mustn't they have been laughing?