can tread
Verbo irregolare: tread - trod- trod, trodden

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I can tread
you can tread
she can tread
we can tread
you can tread
they can tread 	I can be treading
you can be treading
she can be treading
we can be treading
you can be treading
they can be treading	I can have trod, trodden
you can have trod, trodden
she can have trod, trodden
we can have trod, trodden
you can have trod, trodden
they can have trod, trodden	I can have been treading
you can have been treading
she can have been treading
we can have been treading
you can have been treading
they can have been treading	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I cannot tread
you cannot tread
she cannot tread
we cannot tread
you cannot tread
they cannot tread 	I cannot be treading
you cannot be treading
she cannot be treading
we cannot be treading
you cannot be treading
they cannot be treading	I cannot have trod, trodden
you cannot have trod, trodden
she cannot have trod, trodden
we cannot have trod, trodden
you cannot have trod, trodden
they cannot have trod, trodden	I cannot have been treading
you cannot have been treading
she cannot have been treading
we cannot have been treading
you cannot have been treading
they cannot have been treading	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I tread?
can you tread?
can she tread?
can we tread?
can you tread?
can they tread? 	can I be treading?
can you be treading?
can she be treading?
can we be treading?
can you be treading?
can they be treading? 	can I have trod, trodden?
can you have trod, trodden?
can she have trod, trodden?
can we have trod, trodden?
can you have trod, trodden?
can they have trod, trodden? 	can I have been treading?
can you have been treading?
can she have been treading?
can we have been treading?
can you have been treading?
can they have been treading? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I not tread?
can you not tread?
can she not tread?
can we not tread?
can you not tread?
can they not tread? 	can I not be treading?
can you not be treading?
can she not be treading?
can we not be treading?
can you not be treading?
can they not be treading? 	can I not have trod, trodden?
can you not have trod, trodden?
can she not have trod, trodden?
can we not have trod, trodden?
can you not have trod, trodden?
can they not have trod, trodden? 	can I not have been treading?
can you not have been treading?
can she not have been treading?
can we not have been treading?
can you not have been treading?
can they not have been treading?