I must barhop you must barhop she must barhop we must barhop you must barhop they must barhop
V-ing form
I must be barhoping you must be barhoping she must be barhoping we must be barhoping you must be barhoping they must be barhoping
Perfect
I must have barhoped you must have barhoped she must have barhoped we must have barhoped you must have barhoped they must have barhoped
V-ing perfect
I must have been barhoping you must have been barhoping she must have been barhoping we must have been barhoping you must have been barhoping they must have been barhoping
Negation
Simple form
I mustn't barhop you mustn't barhop she mustn't barhop we mustn't barhop you mustn't barhop they mustn't barhop
V-ing form
I mustn't be barhoping you mustn't be barhoping she mustn't be barhoping we mustn't be barhoping you mustn't be barhoping they mustn't be barhoping
Perfect
I mustn't have barhoped you mustn't have barhoped she mustn't have barhoped we mustn't have barhoped you mustn't have barhoped they mustn't have barhoped
V-ing perfect
I mustn't have been barhoping you mustn't have been barhoping she mustn't have been barhoping we mustn't have been barhoping you mustn't have been barhoping they mustn't have been barhoping
Interrogative form
Simple form
must I barhop? must you barhop? must she barhop? must we barhop? must you barhop? must they barhop?
V-ing form
must I be barhoping? must you be barhoping? must she be barhoping? must we be barhoping? must you be barhoping? must they be barhoping?
Perfect
must I have barhoped? must you have barhoped? must she have barhoped? must we have barhoped? must you have barhoped? must they have barhoped?
V-ing perfect
must I have been barhoping? must you have been barhoping? must she have been barhoping? must we have been barhoping? must you have been barhoping? must they have been barhoping?
Interro-negative form
Simple form
mustn't I barhop? mustn't you barhop? mustn't she barhop? mustn't we barhop? mustn't you barhop? mustn't they barhop?
V-ing form
mustn't I be barhoping? mustn't you be barhoping? mustn't she be barhoping? mustn't we be barhoping? mustn't you be barhoping? mustn't they be barhoping?
Perfect
mustn't I have barhoped? mustn't you have barhoped? mustn't she have barhoped? mustn't we have barhoped? mustn't you have barhoped? mustn't they have barhoped?
V-ing perfect
mustn't I have been barhoping? mustn't you have been barhoping? mustn't she have been barhoping? mustn't we have been barhoping? mustn't you have been barhoping? mustn't they have been barhoping?