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

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

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

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

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