I must join you must join he must join we must join you must join they must join
Forma com V-ing
I must be joining you must be joining he must be joining we must be joining you must be joining they must be joining
Perfeito
I must have joined you must have joined he must have joined we must have joined you must have joined they must have joined
Perfeito com V-ing
I must have been joining you must have been joining he must have been joining we must have been joining you must have been joining they must have been joining
Negação
Forma simple
I mustn't join you mustn't join he mustn't join we mustn't join you mustn't join they mustn't join
Forma com V-ing
I mustn't be joining you mustn't be joining he mustn't be joining we mustn't be joining you mustn't be joining they mustn't be joining
Perfeito
I mustn't have joined you mustn't have joined he mustn't have joined we mustn't have joined you mustn't have joined they mustn't have joined
Perfeito com V-ing
I mustn't have been joining you mustn't have been joining he mustn't have been joining we mustn't have been joining you mustn't have been joining they mustn't have been joining
Forma interrogativa
Forma simple
must I join? must you join? must he join? must we join? must you join? must they join?
Forma com V-ing
must I be joining? must you be joining? must he be joining? must we be joining? must you be joining? must they be joining?
Perfeito
must I have joined? must you have joined? must he have joined? must we have joined? must you have joined? must they have joined?
Perfeito com V-ing
must I have been joining? must you have been joining? must he have been joining? must we have been joining? must you have been joining? must they have been joining?
Forma interro-Negação
Forma simple
mustn't I join? mustn't you join? mustn't he join? mustn't we join? mustn't you join? mustn't they join?
Forma com V-ing
mustn't I be joining? mustn't you be joining? mustn't he be joining? mustn't we be joining? mustn't you be joining? mustn't they be joining?
Perfeito
mustn't I have joined? mustn't you have joined? mustn't he have joined? mustn't we have joined? mustn't you have joined? mustn't they have joined?
Perfeito com V-ing
mustn't I have been joining? mustn't you have been joining? mustn't he have been joining? mustn't we have been joining? mustn't you have been joining? mustn't they have been joining?