I can backstop you can backstop he can backstop we can backstop you can backstop they can backstop
Forma com V-ing
I can be backstoping you can be backstoping he can be backstoping we can be backstoping you can be backstoping they can be backstoping
Perfeito
I can have backstoped you can have backstoped he can have backstoped we can have backstoped you can have backstoped they can have backstoped
Perfeito com V-ing
I can have been backstoping you can have been backstoping he can have been backstoping we can have been backstoping you can have been backstoping they can have been backstoping
Negação
Forma simple
I can't backstop you can't backstop he can't backstop we can't backstop you can't backstop they can't backstop
Forma com V-ing
I can't be backstoping you can't be backstoping he can't be backstoping we can't be backstoping you can't be backstoping they can't be backstoping
Perfeito
I can't have backstoped you can't have backstoped he can't have backstoped we can't have backstoped you can't have backstoped they can't have backstoped
Perfeito com V-ing
I can't have been backstoping you can't have been backstoping he can't have been backstoping we can't have been backstoping you can't have been backstoping they can't have been backstoping
Forma interrogativa
Forma simple
can I backstop? can you backstop? can he backstop? can we backstop? can you backstop? can they backstop?
Forma com V-ing
can I be backstoping? can you be backstoping? can he be backstoping? can we be backstoping? can you be backstoping? can they be backstoping?
Perfeito
can I have backstoped? can you have backstoped? can he have backstoped? can we have backstoped? can you have backstoped? can they have backstoped?
Perfeito com V-ing
can I have been backstoping? can you have been backstoping? can he have been backstoping? can we have been backstoping? can you have been backstoping? can they have been backstoping?
Forma interro-Negação
Forma simple
can't I backstop? can't you backstop? can't he backstop? can't we backstop? can't you backstop? can't they backstop?
Forma com V-ing
can't I be backstoping? can't you be backstoping? can't he be backstoping? can't we be backstoping? can't you be backstoping? can't they be backstoping?
Perfeito
can't I have backstoped? can't you have backstoped? can't he have backstoped? can't we have backstoped? can't you have backstoped? can't they have backstoped?
Perfeito com V-ing
can't I have been backstoping? can't you have been backstoping? can't he have been backstoping? can't we have been backstoping? can't you have been backstoping? can't they have been backstoping?