English verb conjugation
SHOULD UNDERSTUDY

Regular verb: understudy - understudied - understudied

Affirmation

Simple form	V-ing form
I should understudy you should understudy she should understudy we should understudy you should understudy they should understudy	I should be understudying you should be understudying she should be understudying we should be understudying you should be understudying they should be understudying
Perfect	V-ing perfect
I should have understudied you should have understudied she should have understudied we should have understudied you should have understudied they should have understudied	I should have been understudying you should have been understudying she should have been understudying we should have been understudying you should have been understudying they should have been understudying

Negation

Simple form	V-ing form
I should not understudy you should not understudy she should not understudy we should not understudy you should not understudy they should not understudy	I should not be understudying you should not be understudying she should not be understudying we should not be understudying you should not be understudying they should not be understudying
Perfect	V-ing perfect
I should not have understudied you should not have understudied she should not have understudied we should not have understudied you should not have understudied they should not have understudied	I should not have been understudying you should not have been understudying she should not have been understudying we should not have been understudying you should not have been understudying they should not have been understudying

Interrogative form

Simple form	V-ing form
should I understudy? should you understudy? should she understudy? should we understudy? should you understudy? should they understudy?	should I be understudying? should you be understudying? should she be understudying? should we be understudying? should you be understudying? should they be understudying?
Perfect	V-ing perfect
should I have understudied? should you have understudied? should she have understudied? should we have understudied? should you have understudied? should they have understudied?	should I have been understudying? should you have been understudying? should she have been understudying? should we have been understudying? should you have been understudying? should they have been understudying?

Interro-negative form

Simple form	V-ing form
should I not understudy? should you not understudy? should she not understudy? should we not understudy? should you not understudy? should they not understudy?	should I not be understudying? should you not be understudying? should she not be understudying? should we not be understudying? should you not be understudying? should they not be understudying?
Perfect	V-ing perfect
should I not have understudied? should you not have understudied? should she not have understudied? should we not have understudied? should you not have understudied? should they not have understudied?	should I not have been understudying? should you not have been understudying? should she not have been understudying? should we not have been understudying? should you not have been understudying? should they not have been understudying?