Conjugación del verbo inglés
COULD DRAIN

Verbo regular: drain - drained - drained

Afirmación

Forma simple	Forma con V-ing
I could drain you could drain she could drain we could drain you could drain they could drain	I could be draining you could be draining she could be draining we could be draining you could be draining they could be draining
Perfecto	Perfecto con V-ing
I could have drained you could have drained she could have drained we could have drained you could have drained they could have drained	I could have been draining you could have been draining she could have been draining we could have been draining you could have been draining they could have been draining

Negación

Forma simple	Forma con V-ing
I couldn't drain you couldn't drain she couldn't drain we couldn't drain you couldn't drain they couldn't drain	I couldn't be draining you couldn't be draining she couldn't be draining we couldn't be draining you couldn't be draining they couldn't be draining
Perfecto	Perfecto con V-ing
I couldn't have drained you couldn't have drained she couldn't have drained we couldn't have drained you couldn't have drained they couldn't have drained	I couldn't have been draining you couldn't have been draining she couldn't have been draining we couldn't have been draining you couldn't have been draining they couldn't have been draining

Forma interrogativa

Forma simple	Forma con V-ing
could I drain? could you drain? could she drain? could we drain? could you drain? could they drain?	could I be draining? could you be draining? could she be draining? could we be draining? could you be draining? could they be draining?
Perfecto	Perfecto con V-ing
could I have drained? could you have drained? could she have drained? could we have drained? could you have drained? could they have drained?	could I have been draining? could you have been draining? could she have been draining? could we have been draining? could you have been draining? could they have been draining?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I drain? couldn't you drain? couldn't she drain? couldn't we drain? couldn't you drain? couldn't they drain?	couldn't I be draining? couldn't you be draining? couldn't she be draining? couldn't we be draining? couldn't you be draining? couldn't they be draining?
Perfecto	Perfecto con V-ing
couldn't I have drained? couldn't you have drained? couldn't she have drained? couldn't we have drained? couldn't you have drained? couldn't they have drained?	couldn't I have been draining? couldn't you have been draining? couldn't she have been draining? couldn't we have been draining? couldn't you have been draining? couldn't they have been draining?