Conjuciones del modo auxiliar
COULD con el verbo TO WORK
Ejemplos:

Simple	Continuo
I could work	I could be working
you could work	you could be working
he could work	he could be working
she could work	she could be working
it could work	it could be working
we could work	we could be working
they could work	they could be working
Perfecto	Perfecto Continuo
I could have worked	I could have been working
you could have worked	you could have been working
he could have worked	he could have been working
she could have worked	she could have been working
it could have worked	it could have been working
we could have worked	we could have been working
they could have worked	they could have been working

Preguntas
Para formar una pregunta el primer
auxiliar se pone antes del sujeto.
Ejemplos:

;Declaracion afirmativa	Interrogativa
She can work.	Can she work?
He would be working.	Would he be working?
They should have worked.	Should they have worked?
I could have been working.	Could I have been working?

Declaracion negativa
En la forma de una declaracion afirmativa
la palabra NOT va despues del primer auxiliar
Notese que el auxiliar CAN seguido de NOT
se escribe como una sola palabra.
Ejemplos:

Declaracion afirmativa	Declaracion negativa
She can work.	She cannot work.
He would be working.	He would not be working.
They should have worked.	They should not have worked.
I could have been working.	I could not have been working.

Preguntas negativas
Para formar una pregunta interrogativa
el primer auxiliar debe ir antes del sujeto
y la palabra NOT se pone antes del sujeto
Sin embargo cuando se usan las
contracciones la forma abreviada de NOT
va inmediatamente despues del auxiliar.
Ejemplos:

Con contraccion	Sin contraccion
Can she not work?	Can't she work?
Would he not be working?	Wouldn't he be working?
Should they not have worked?	Shouldn't they have worked?
Could I not have been working?	Couldn't I have been working?

Coletillas interrogativas
Las coletillas estan subrrayadas en purpura.

Declaracion afirmativa	Declaracion afirmativa con coletilla
She can work.	She can work, can't she?
He would be working.	He would be working, wouldn't he?
They should have worked.	They should have worked, shouldn't they?
I could have been working.	I could have been working, couldn't I?

A CAN
A TO WORK
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