English verb conjugation
MUST INVIGILATE

Regular verb: invigilate - invigilated - invigilated

Affirmation

Simple form	V-ing form
I must invigilate you must invigilate he must invigilate we must invigilate you must invigilate they must invigilate	I must be invigilating you must be invigilating he must be invigilating we must be invigilating you must be invigilating they must be invigilating
Perfect	V-ing perfect
I must have invigilated you must have invigilated he must have invigilated we must have invigilated you must have invigilated they must have invigilated	I must have been invigilating you must have been invigilating he must have been invigilating we must have been invigilating you must have been invigilating they must have been invigilating

Negation

Simple form	V-ing form
I mustn't invigilate you mustn't invigilate he mustn't invigilate we mustn't invigilate you mustn't invigilate they mustn't invigilate	I mustn't be invigilating you mustn't be invigilating he mustn't be invigilating we mustn't be invigilating you mustn't be invigilating they mustn't be invigilating
Perfect	V-ing perfect
I mustn't have invigilated you mustn't have invigilated he mustn't have invigilated we mustn't have invigilated you mustn't have invigilated they mustn't have invigilated	I mustn't have been invigilating you mustn't have been invigilating he mustn't have been invigilating we mustn't have been invigilating you mustn't have been invigilating they mustn't have been invigilating

Interrogative form

Simple form	V-ing form
must I invigilate? must you invigilate? must he invigilate? must we invigilate? must you invigilate? must they invigilate?	must I be invigilating? must you be invigilating? must he be invigilating? must we be invigilating? must you be invigilating? must they be invigilating?
Perfect	V-ing perfect
must I have invigilated? must you have invigilated? must he have invigilated? must we have invigilated? must you have invigilated? must they have invigilated?	must I have been invigilating? must you have been invigilating? must he have been invigilating? must we have been invigilating? must you have been invigilating? must they have been invigilating?

Interro-negative form

Simple form	V-ing form
mustn't I invigilate? mustn't you invigilate? mustn't he invigilate? mustn't we invigilate? mustn't you invigilate? mustn't they invigilate?	mustn't I be invigilating? mustn't you be invigilating? mustn't he be invigilating? mustn't we be invigilating? mustn't you be invigilating? mustn't they be invigilating?
Perfect	V-ing perfect
mustn't I have invigilated? mustn't you have invigilated? mustn't he have invigilated? mustn't we have invigilated? mustn't you have invigilated? mustn't they have invigilated?	mustn't I have been invigilating? mustn't you have been invigilating? mustn't he have been invigilating? mustn't we have been invigilating? mustn't you have been invigilating? mustn't they have been invigilating?