Conjugación del verbo inglés COULD STEM

Verbo regular: stem - stemmed - stemmed

Afirmación

Forma simple

I could stem
you could stem
she could stem
we could stem
you could stem
they could stem

Forma con V-ing

I could be stemming
you could be stemming
she could be stemming
we could be stemming
you could be stemming
they could be stemming

Perfecto

I could have stemmed
you could have stemmed
she could have stemmed
we could have stemmed
you could have stemmed
they could have stemmed

Perfecto con V-ing

I could have been stemming
you could have been stemming
she could have been stemming
we could have been stemming
you could have been stemming
they could have been stemming

Negación

Forma simple

I couldn't stem
you couldn't stem
she couldn't stem
we couldn't stem
you couldn't stem
they couldn't stem

Forma con V-ing

I couldn't be stemming
you couldn't be stemming
she couldn't be stemming
we couldn't be stemming
you couldn't be stemming
they couldn't be stemming

Perfecto

I couldn't have stemmed
you couldn't have stemmed
she couldn't have stemmed
we couldn't have stemmed
you couldn't have stemmed
they couldn't have stemmed

Perfecto con V-ing

I couldn't have been stemming
you couldn't have been stemming
she couldn't have been stemming
we couldn't have been stemming
you couldn't have been stemming
they couldn't have been stemming

Forma interrogativa

Forma simple

could I stem?
could you stem?
could she stem?
could we stem?
could you stem?
could they stem?

Forma con V-ing

could I be stemming?
could you be stemming?
could she be stemming?
could we be stemming?
could you be stemming?
could they be stemming?

Perfecto

could I have stemmed?
could you have stemmed?
could she have stemmed?
could we have stemmed?
could you have stemmed?
could they have stemmed?

Perfecto con V-ing

could I have been stemming?
could you have been stemming?
could she have been stemming?
could we have been stemming?
could you have been stemming?
could they have been stemming?

Forma interro-negativa

Forma simple

couldn't I stem?
couldn't you stem?
couldn't she stem?
couldn't we stem?
couldn't you stem?
couldn't they stem?

Forma con V-ing

couldn't I be stemming?
couldn't you be stemming?
couldn't she be stemming?
couldn't we be stemming?
couldn't you be stemming?
couldn't they be stemming?

Perfecto

couldn't I have stemmed?
couldn't you have stemmed?
couldn't she have stemmed?
couldn't we have stemmed?
couldn't you have stemmed?
couldn't they have stemmed?

Perfecto con V-ing

couldn't I have been stemming?
couldn't you have been stemming?
couldn't she have been stemming?
couldn't we have been stemming?
couldn't you have been stemming?
couldn't they have been stemming?

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