I can smear you can smear she can smear we can smear you can smear they can smear
V-ing form
I can be smearing you can be smearing she can be smearing we can be smearing you can be smearing they can be smearing
Perfect
I can have smeared you can have smeared she can have smeared we can have smeared you can have smeared they can have smeared
V-ing perfect
I can have been smearing you can have been smearing she can have been smearing we can have been smearing you can have been smearing they can have been smearing
Negation
Simple form
I can't smear you can't smear she can't smear we can't smear you can't smear they can't smear
V-ing form
I can't be smearing you can't be smearing she can't be smearing we can't be smearing you can't be smearing they can't be smearing
Perfect
I can't have smeared you can't have smeared she can't have smeared we can't have smeared you can't have smeared they can't have smeared
V-ing perfect
I can't have been smearing you can't have been smearing she can't have been smearing we can't have been smearing you can't have been smearing they can't have been smearing
Interrogative form
Simple form
can I smear? can you smear? can she smear? can we smear? can you smear? can they smear?
V-ing form
can I be smearing? can you be smearing? can she be smearing? can we be smearing? can you be smearing? can they be smearing?
Perfect
can I have smeared? can you have smeared? can she have smeared? can we have smeared? can you have smeared? can they have smeared?
V-ing perfect
can I have been smearing? can you have been smearing? can she have been smearing? can we have been smearing? can you have been smearing? can they have been smearing?
Interro-negative form
Simple form
can't I smear? can't you smear? can't she smear? can't we smear? can't you smear? can't they smear?
V-ing form
can't I be smearing? can't you be smearing? can't she be smearing? can't we be smearing? can't you be smearing? can't they be smearing?
Perfect
can't I have smeared? can't you have smeared? can't she have smeared? can't we have smeared? can't you have smeared? can't they have smeared?
V-ing perfect
can't I have been smearing? can't you have been smearing? can't she have been smearing? can't we have been smearing? can't you have been smearing? can't they have been smearing?