Conjugação do verbo inglês COULD STEM

Verbo regular: stem - stemmed - stemmed

Afirmação

Forma simple

I could stem
you could stem
he could stem
we could stem
you could stem
they could stem

Forma com V-ing

I could be stemming
you could be stemming
he could be stemming
we could be stemming
you could be stemming
they could be stemming

Perfeito

I could have stemmed
you could have stemmed
he could have stemmed
we could have stemmed
you could have stemmed
they could have stemmed

Perfeito com V-ing

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

Negação

Forma simple

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

Forma com V-ing

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

Perfeito

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

Perfeito com V-ing

I couldn't have been stemming
you couldn't have been stemming
he 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 he stem?
could we stem?
could you stem?
could they stem?

Forma com V-ing

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

Perfeito

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

Perfeito com V-ing

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

Forma interro-Negação

Forma simple

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

Forma com V-ing

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

Perfeito

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

Perfeito com V-ing

couldn't I have been stemming?
couldn't you have been stemming?
couldn't he 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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