English verb conjugation
SHOULD TURN

Regular verb: turn - turned - turned

Affirmation

Simple form	V-ing form
I should turn you should turn he should turn we should turn you should turn they should turn	I should be turning you should be turning he should be turning we should be turning you should be turning they should be turning
Perfect	V-ing perfect
I should have turned you should have turned he should have turned we should have turned you should have turned they should have turned	I should have been turning you should have been turning he should have been turning we should have been turning you should have been turning they should have been turning

Negation

Simple form	V-ing form
I should not turn you should not turn he should not turn we should not turn you should not turn they should not turn	I should not be turning you should not be turning he should not be turning we should not be turning you should not be turning they should not be turning
Perfect	V-ing perfect
I should not have turned you should not have turned he should not have turned we should not have turned you should not have turned they should not have turned	I should not have been turning you should not have been turning he should not have been turning we should not have been turning you should not have been turning they should not have been turning

Interrogative form

Simple form	V-ing form
should I turn? should you turn? should he turn? should we turn? should you turn? should they turn?	should I be turning? should you be turning? should he be turning? should we be turning? should you be turning? should they be turning?
Perfect	V-ing perfect
should I have turned? should you have turned? should he have turned? should we have turned? should you have turned? should they have turned?	should I have been turning? should you have been turning? should he have been turning? should we have been turning? should you have been turning? should they have been turning?

Interro-negative form

Simple form	V-ing form
should I not turn? should you not turn? should he not turn? should we not turn? should you not turn? should they not turn?	should I not be turning? should you not be turning? should he not be turning? should we not be turning? should you not be turning? should they not be turning?
Perfect	V-ing perfect
should I not have turned? should you not have turned? should he not have turned? should we not have turned? should you not have turned? should they not have turned?	should I not have been turning? should you not have been turning? should he not have been turning? should we not have been turning? should you not have been turning? should they not have been turning?