I can inquire you can inquire he can inquire we can inquire you can inquire they can inquire
Forma com V-ing
I can be inquiring you can be inquiring he can be inquiring we can be inquiring you can be inquiring they can be inquiring
Perfeito
I can have inquired you can have inquired he can have inquired we can have inquired you can have inquired they can have inquired
Perfeito com V-ing
I can have been inquiring you can have been inquiring he can have been inquiring we can have been inquiring you can have been inquiring they can have been inquiring
Negação
Forma simple
I can't inquire you can't inquire he can't inquire we can't inquire you can't inquire they can't inquire
Forma com V-ing
I can't be inquiring you can't be inquiring he can't be inquiring we can't be inquiring you can't be inquiring they can't be inquiring
Perfeito
I can't have inquired you can't have inquired he can't have inquired we can't have inquired you can't have inquired they can't have inquired
Perfeito com V-ing
I can't have been inquiring you can't have been inquiring he can't have been inquiring we can't have been inquiring you can't have been inquiring they can't have been inquiring
Forma interrogativa
Forma simple
can I inquire? can you inquire? can he inquire? can we inquire? can you inquire? can they inquire?
Forma com V-ing
can I be inquiring? can you be inquiring? can he be inquiring? can we be inquiring? can you be inquiring? can they be inquiring?
Perfeito
can I have inquired? can you have inquired? can he have inquired? can we have inquired? can you have inquired? can they have inquired?
Perfeito com V-ing
can I have been inquiring? can you have been inquiring? can he have been inquiring? can we have been inquiring? can you have been inquiring? can they have been inquiring?
Forma interro-Negação
Forma simple
can't I inquire? can't you inquire? can't he inquire? can't we inquire? can't you inquire? can't they inquire?
Forma com V-ing
can't I be inquiring? can't you be inquiring? can't he be inquiring? can't we be inquiring? can't you be inquiring? can't they be inquiring?
Perfeito
can't I have inquired? can't you have inquired? can't he have inquired? can't we have inquired? can't you have inquired? can't they have inquired?
Perfeito com V-ing
can't I have been inquiring? can't you have been inquiring? can't he have been inquiring? can't we have been inquiring? can't you have been inquiring? can't they have been inquiring?