I should skid you should skid she should skid we should skid you should skid they should skid
V-ing form
I should be skidding you should be skidding she should be skidding we should be skidding you should be skidding they should be skidding
Perfect
I should have skidded you should have skidded she should have skidded we should have skidded you should have skidded they should have skidded
V-ing perfect
I should have been skidding you should have been skidding she should have been skidding we should have been skidding you should have been skidding they should have been skidding
Negation
Simple form
I should not skid you should not skid she should not skid we should not skid you should not skid they should not skid
V-ing form
I should not be skidding you should not be skidding she should not be skidding we should not be skidding you should not be skidding they should not be skidding
Perfect
I should not have skidded you should not have skidded she should not have skidded we should not have skidded you should not have skidded they should not have skidded
V-ing perfect
I should not have been skidding you should not have been skidding she should not have been skidding we should not have been skidding you should not have been skidding they should not have been skidding
Interrogative form
Simple form
should I skid? should you skid? should she skid? should we skid? should you skid? should they skid?
V-ing form
should I be skidding? should you be skidding? should she be skidding? should we be skidding? should you be skidding? should they be skidding?
Perfect
should I have skidded? should you have skidded? should she have skidded? should we have skidded? should you have skidded? should they have skidded?
V-ing perfect
should I have been skidding? should you have been skidding? should she have been skidding? should we have been skidding? should you have been skidding? should they have been skidding?
Interro-negative form
Simple form
should I not skid? should you not skid? should she not skid? should we not skid? should you not skid? should they not skid?
V-ing form
should I not be skidding? should you not be skidding? should she not be skidding? should we not be skidding? should you not be skidding? should they not be skidding?
Perfect
should I not have skidded? should you not have skidded? should she not have skidded? should we not have skidded? should you not have skidded? should they not have skidded?
V-ing perfect
should I not have been skidding? should you not have been skidding? should she not have been skidding? should we not have been skidding? should you not have been skidding? should they not have been skidding?