Conjugación del verbo inglés
CAN SIRE

Verbo regular: sire - sired - sired

Afirmación

Forma simple	Forma con V-ing
I can sire you can sire he can sire we can sire you can sire they can sire	I can be siring you can be siring he can be siring we can be siring you can be siring they can be siring
Perfecto	Perfecto con V-ing
I can have sired you can have sired he can have sired we can have sired you can have sired they can have sired	I can have been siring you can have been siring he can have been siring we can have been siring you can have been siring they can have been siring

Negación

Forma simple	Forma con V-ing
I can't sire you can't sire he can't sire we can't sire you can't sire they can't sire	I can't be siring you can't be siring he can't be siring we can't be siring you can't be siring they can't be siring
Perfecto	Perfecto con V-ing
I can't have sired you can't have sired he can't have sired we can't have sired you can't have sired they can't have sired	I can't have been siring you can't have been siring he can't have been siring we can't have been siring you can't have been siring they can't have been siring

Forma interrogativa

Forma simple	Forma con V-ing
can I sire? can you sire? can he sire? can we sire? can you sire? can they sire?	can I be siring? can you be siring? can he be siring? can we be siring? can you be siring? can they be siring?
Perfecto	Perfecto con V-ing
can I have sired? can you have sired? can he have sired? can we have sired? can you have sired? can they have sired?	can I have been siring? can you have been siring? can he have been siring? can we have been siring? can you have been siring? can they have been siring?

Forma interro-negativa

Forma simple	Forma con V-ing
can't I sire? can't you sire? can't he sire? can't we sire? can't you sire? can't they sire?	can't I be siring? can't you be siring? can't he be siring? can't we be siring? can't you be siring? can't they be siring?
Perfecto	Perfecto con V-ing
can't I have sired? can't you have sired? can't he have sired? can't we have sired? can't you have sired? can't they have sired?	can't I have been siring? can't you have been siring? can't he have been siring? can't we have been siring? can't you have been siring? can't they have been siring?