can sign
Verbe régulier : sign - signed- signed
Traduction française : signer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can sign
you can sign
she can sign
we can sign
you can sign
they can sign 	I can be signing
you can be signing
she can be signing
we can be signing
you can be signing
they can be signing	I can have signed
you can have signed
she can have signed
we can have signed
you can have signed
they can have signed	I can have been signing
you can have been signing
she can have been signing
we can have been signing
you can have been signing
they can have been signing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can't sign
you can't sign
she can't sign
we can't sign
you can't sign
they can't sign 	I can't be signing
you can't be signing
she can't be signing
we can't be signing
you can't be signing
they can't be signing	I can't have signed
you can't have signed
she can't have signed
we can't have signed
you can't have signed
they can't have signed	I can't have been signing
you can't have been signing
she can't have been signing
we can't have been signing
you can't have been signing
they can't have been signing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I sign?
can you sign?
can she sign?
can we sign?
can you sign?
can they sign? 	can I be signing?
can you be signing?
can she be signing?
can we be signing?
can you be signing?
can they be signing? 	can I have signed?
can you have signed?
can she have signed?
can we have signed?
can you have signed?
can they have signed? 	can I have been signing?
can you have been signing?
can she have been signing?
can we have been signing?
can you have been signing?
can they have been signing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can't I sign?
can't you sign?
can't she sign?
can't we sign?
can't you sign?
can't they sign? 	can't I be signing?
can't you be signing?
can't she be signing?
can't we be signing?
can't you be signing?
can't they be signing? 	can't I have signed?
can't you have signed?
can't she have signed?
can't we have signed?
can't you have signed?
can't they have signed? 	can't I have been signing?
can't you have been signing?
can't she have been signing?
can't we have been signing?
can't you have been signing?
can't they have been signing?