should grass
Verbo regular: grass - grassed- grassed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should grass
you should grass
she should grass
we should grass
you should grass
they should grass 	I should be grassing
you should be grassing
she should be grassing
we should be grassing
you should be grassing
they should be grassing	I should have grassed
you should have grassed
she should have grassed
we should have grassed
you should have grassed
they should have grassed	I should have been grassing
you should have been grassing
she should have been grassing
we should have been grassing
you should have been grassing
they should have been grassing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not grass
you should not grass
she should not grass
we should not grass
you should not grass
they should not grass 	I should not be grassing
you should not be grassing
she should not be grassing
we should not be grassing
you should not be grassing
they should not be grassing	I should not have grassed
you should not have grassed
she should not have grassed
we should not have grassed
you should not have grassed
they should not have grassed	I should not have been grassing
you should not have been grassing
she should not have been grassing
we should not have been grassing
you should not have been grassing
they should not have been grassing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I grass?
should you grass?
should she grass?
should we grass?
should you grass?
should they grass? 	should I be grassing?
should you be grassing?
should she be grassing?
should we be grassing?
should you be grassing?
should they be grassing? 	should I have grassed?
should you have grassed?
should she have grassed?
should we have grassed?
should you have grassed?
should they have grassed? 	should I have been grassing?
should you have been grassing?
should she have been grassing?
should we have been grassing?
should you have been grassing?
should they have been grassing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not grass?
should you not grass?
should she not grass?
should we not grass?
should you not grass?
should they not grass? 	should I not be grassing?
should you not be grassing?
should she not be grassing?
should we not be grassing?
should you not be grassing?
should they not be grassing? 	should I not have grassed?
should you not have grassed?
should she not have grassed?
should we not have grassed?
should you not have grassed?
should they not have grassed? 	should I not have been grassing?
should you not have been grassing?
should she not have been grassing?
should we not have been grassing?
should you not have been grassing?
should they not have been grassing?