can contribute
Verbe régulier : contribute - contributed- contributed
Traduction française : donner - contribuer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can contribute
you can contribute
he can contribute
we can contribute
you can contribute
they can contribute 	I can be contributing
you can be contributing
he can be contributing
we can be contributing
you can be contributing
they can be contributing	I can have contributed
you can have contributed
he can have contributed
we can have contributed
you can have contributed
they can have contributed	I can have been contributing
you can have been contributing
he can have been contributing
we can have been contributing
you can have been contributing
they can have been contributing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot contribute
you cannot contribute
he cannot contribute
we cannot contribute
you cannot contribute
they cannot contribute 	I cannot be contributing
you cannot be contributing
he cannot be contributing
we cannot be contributing
you cannot be contributing
they cannot be contributing	I cannot have contributed
you cannot have contributed
he cannot have contributed
we cannot have contributed
you cannot have contributed
they cannot have contributed	I cannot have been contributing
you cannot have been contributing
he cannot have been contributing
we cannot have been contributing
you cannot have been contributing
they cannot have been contributing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I contribute?
can you contribute?
can he contribute?
can we contribute?
can you contribute?
can they contribute? 	can I be contributing?
can you be contributing?
can he be contributing?
can we be contributing?
can you be contributing?
can they be contributing? 	can I have contributed?
can you have contributed?
can he have contributed?
can we have contributed?
can you have contributed?
can they have contributed? 	can I have been contributing?
can you have been contributing?
can he have been contributing?
can we have been contributing?
can you have been contributing?
can they have been contributing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not contribute?
can you not contribute?
can he not contribute?
can we not contribute?
can you not contribute?
can they not contribute? 	can I not be contributing?
can you not be contributing?
can he not be contributing?
can we not be contributing?
can you not be contributing?
can they not be contributing? 	can I not have contributed?
can you not have contributed?
can he not have contributed?
can we not have contributed?
can you not have contributed?
can they not have contributed? 	can I not have been contributing?
can you not have been contributing?
can he not have been contributing?
can we not have been contributing?
can you not have been contributing?
can they not have been contributing?