I can survey you can survey she can survey we can survey you can survey they can survey
Forma com V-ing
I can be surveying you can be surveying she can be surveying we can be surveying you can be surveying they can be surveying
Perfeito
I can have surveyed you can have surveyed she can have surveyed we can have surveyed you can have surveyed they can have surveyed
Perfeito com V-ing
I can have been surveying you can have been surveying she can have been surveying we can have been surveying you can have been surveying they can have been surveying
Negação
Forma simple
I can't survey you can't survey she can't survey we can't survey you can't survey they can't survey
Forma com V-ing
I can't be surveying you can't be surveying she can't be surveying we can't be surveying you can't be surveying they can't be surveying
Perfeito
I can't have surveyed you can't have surveyed she can't have surveyed we can't have surveyed you can't have surveyed they can't have surveyed
Perfeito com V-ing
I can't have been surveying you can't have been surveying she can't have been surveying we can't have been surveying you can't have been surveying they can't have been surveying
Forma interrogativa
Forma simple
can I survey? can you survey? can she survey? can we survey? can you survey? can they survey?
Forma com V-ing
can I be surveying? can you be surveying? can she be surveying? can we be surveying? can you be surveying? can they be surveying?
Perfeito
can I have surveyed? can you have surveyed? can she have surveyed? can we have surveyed? can you have surveyed? can they have surveyed?
Perfeito com V-ing
can I have been surveying? can you have been surveying? can she have been surveying? can we have been surveying? can you have been surveying? can they have been surveying?
Forma interro-Negação
Forma simple
can't I survey? can't you survey? can't she survey? can't we survey? can't you survey? can't they survey?
Forma com V-ing
can't I be surveying? can't you be surveying? can't she be surveying? can't we be surveying? can't you be surveying? can't they be surveying?
Perfeito
can't I have surveyed? can't you have surveyed? can't she have surveyed? can't we have surveyed? can't you have surveyed? can't they have surveyed?
Perfeito com V-ing
can't I have been surveying? can't you have been surveying? can't she have been surveying? can't we have been surveying? can't you have been surveying? can't they have been surveying?