may contribute
Verbo regolare: contribute - contributed- contributed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I may contribute
you may contribute
he may contribute
we may contribute
you may contribute
they may contribute 	I may be contributing
you may be contributing
he may be contributing
we may be contributing
you may be contributing
they may be contributing	I may have contributed
you may have contributed
he may have contributed
we may have contributed
you may have contributed
they may have contributed	I may have been contributing
you may have been contributing
he may have been contributing
we may have been contributing
you may have been contributing
they may have been contributing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mayn't contribute
you mayn't contribute
he mayn't contribute
we mayn't contribute
you mayn't contribute
they mayn't contribute 	I mayn't be contributing
you mayn't be contributing
he mayn't be contributing
we mayn't be contributing
you mayn't be contributing
they mayn't be contributing	I mayn't have contributed
you mayn't have contributed
he mayn't have contributed
we mayn't have contributed
you mayn't have contributed
they mayn't have contributed	I mayn't have been contributing
you mayn't have been contributing
he mayn't have been contributing
we mayn't have been contributing
you mayn't have been contributing
they mayn't have been contributing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
may I contribute?
may you contribute?
may he contribute?
may we contribute?
may you contribute?
may they contribute? 	may I be contributing?
may you be contributing?
may he be contributing?
may we be contributing?
may you be contributing?
may they be contributing? 	may I have contributed?
may you have contributed?
may he have contributed?
may we have contributed?
may you have contributed?
may they have contributed? 	may I have been contributing?
may you have been contributing?
may he have been contributing?
may we have been contributing?
may you have been contributing?
may they have been contributing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mayn't I contribute?
mayn't you contribute?
mayn't he contribute?
mayn't we contribute?
mayn't you contribute?
mayn't they contribute? 	mayn't I be contributing?
mayn't you be contributing?
mayn't he be contributing?
mayn't we be contributing?
mayn't you be contributing?
mayn't they be contributing? 	mayn't I have contributed?
mayn't you have contributed?
mayn't he have contributed?
mayn't we have contributed?
mayn't you have contributed?
mayn't they have contributed? 	mayn't I have been contributing?
mayn't you have been contributing?
mayn't he have been contributing?
mayn't we have been contributing?
mayn't you have been contributing?
mayn't they have been contributing?