English verb conjugation
MUST SKIN-DIVE

Irregular verb: skin-dive - skin-dived, skin-dove - skin-dived

Affirmation

Simple form	V-ing form
I must skin-dive you must skin-dive he must skin-dive we must skin-dive you must skin-dive they must skin-dive	I must be skin-diving you must be skin-diving he must be skin-diving we must be skin-diving you must be skin-diving they must be skin-diving
Perfect	V-ing perfect
I must have skin-dived you must have skin-dived he must have skin-dived we must have skin-dived you must have skin-dived they must have skin-dived	I must have been skin-diving you must have been skin-diving he must have been skin-diving we must have been skin-diving you must have been skin-diving they must have been skin-diving

Negation

Simple form	V-ing form
I mustn't skin-dive you mustn't skin-dive he mustn't skin-dive we mustn't skin-dive you mustn't skin-dive they mustn't skin-dive	I mustn't be skin-diving you mustn't be skin-diving he mustn't be skin-diving we mustn't be skin-diving you mustn't be skin-diving they mustn't be skin-diving
Perfect	V-ing perfect
I mustn't have skin-dived you mustn't have skin-dived he mustn't have skin-dived we mustn't have skin-dived you mustn't have skin-dived they mustn't have skin-dived	I mustn't have been skin-diving you mustn't have been skin-diving he mustn't have been skin-diving we mustn't have been skin-diving you mustn't have been skin-diving they mustn't have been skin-diving

Interrogative form

Simple form	V-ing form
must I skin-dive? must you skin-dive? must he skin-dive? must we skin-dive? must you skin-dive? must they skin-dive?	must I be skin-diving? must you be skin-diving? must he be skin-diving? must we be skin-diving? must you be skin-diving? must they be skin-diving?
Perfect	V-ing perfect
must I have skin-dived? must you have skin-dived? must he have skin-dived? must we have skin-dived? must you have skin-dived? must they have skin-dived?	must I have been skin-diving? must you have been skin-diving? must he have been skin-diving? must we have been skin-diving? must you have been skin-diving? must they have been skin-diving?

Interro-negative form

Simple form	V-ing form
mustn't I skin-dive? mustn't you skin-dive? mustn't he skin-dive? mustn't we skin-dive? mustn't you skin-dive? mustn't they skin-dive?	mustn't I be skin-diving? mustn't you be skin-diving? mustn't he be skin-diving? mustn't we be skin-diving? mustn't you be skin-diving? mustn't they be skin-diving?
Perfect	V-ing perfect
mustn't I have skin-dived? mustn't you have skin-dived? mustn't he have skin-dived? mustn't we have skin-dived? mustn't you have skin-dived? mustn't they have skin-dived?	mustn't I have been skin-diving? mustn't you have been skin-diving? mustn't he have been skin-diving? mustn't we have been skin-diving? mustn't you have been skin-diving? mustn't they have been skin-diving?