Coniugazione del verbo inglese
COULD SIGNAL

Verbo regolare: signal - signalled - signalled

Affermazione

Forma semplice	Forma con V-ing
I could signal you could signal she could signal we could signal you could signal they could signal	I could be signalling you could be signalling she could be signalling we could be signalling you could be signalling they could be signalling
Perfetto	Perfetto con V-ing
I could have signalled you could have signalled she could have signalled we could have signalled you could have signalled they could have signalled	I could have been signalling you could have been signalling she could have been signalling we could have been signalling you could have been signalling they could have been signalling

Negazione

Forma semplice	Forma con V-ing
I could not signal you could not signal she could not signal we could not signal you could not signal they could not signal	I could not be signalling you could not be signalling she could not be signalling we could not be signalling you could not be signalling they could not be signalling
Perfetto	Perfetto con V-ing
I could not have signalled you could not have signalled she could not have signalled we could not have signalled you could not have signalled they could not have signalled	I could not have been signalling you could not have been signalling she could not have been signalling we could not have been signalling you could not have been signalling they could not have been signalling

Forma interrogativa

Forma semplice	Forma con V-ing
could I signal? could you signal? could she signal? could we signal? could you signal? could they signal?	could I be signalling? could you be signalling? could she be signalling? could we be signalling? could you be signalling? could they be signalling?
Perfetto	Perfetto con V-ing
could I have signalled? could you have signalled? could she have signalled? could we have signalled? could you have signalled? could they have signalled?	could I have been signalling? could you have been signalling? could she have been signalling? could we have been signalling? could you have been signalling? could they have been signalling?

Forma interro-negativa

Forma semplice	Forma con V-ing
could I not signal? could you not signal? could she not signal? could we not signal? could you not signal? could they not signal?	could I not be signalling? could you not be signalling? could she not be signalling? could we not be signalling? could you not be signalling? could they not be signalling?
Perfetto	Perfetto con V-ing
could I not have signalled? could you not have signalled? could she not have signalled? could we not have signalled? could you not have signalled? could they not have signalled?	could I not have been signalling? could you not have been signalling? could she not have been signalling? could we not have been signalling? could you not have been signalling? could they not have been signalling?