English verb conjugation
SHOULD SKI

Regular verb: ski - skied - skied

Affirmation

Simple form	V-ing form
I should ski you should ski he should ski we should ski you should ski they should ski	I should be skiing you should be skiing he should be skiing we should be skiing you should be skiing they should be skiing
Perfect	V-ing perfect
I should have skied you should have skied he should have skied we should have skied you should have skied they should have skied	I should have been skiing you should have been skiing he should have been skiing we should have been skiing you should have been skiing they should have been skiing

Negation

Simple form	V-ing form
I should not ski you should not ski he should not ski we should not ski you should not ski they should not ski	I should not be skiing you should not be skiing he should not be skiing we should not be skiing you should not be skiing they should not be skiing
Perfect	V-ing perfect
I should not have skied you should not have skied he should not have skied we should not have skied you should not have skied they should not have skied	I should not have been skiing you should not have been skiing he should not have been skiing we should not have been skiing you should not have been skiing they should not have been skiing

Interrogative form

Simple form	V-ing form
should I ski? should you ski? should he ski? should we ski? should you ski? should they ski?	should I be skiing? should you be skiing? should he be skiing? should we be skiing? should you be skiing? should they be skiing?
Perfect	V-ing perfect
should I have skied? should you have skied? should he have skied? should we have skied? should you have skied? should they have skied?	should I have been skiing? should you have been skiing? should he have been skiing? should we have been skiing? should you have been skiing? should they have been skiing?

Interro-negative form

Simple form	V-ing form
should I not ski? should you not ski? should he not ski? should we not ski? should you not ski? should they not ski?	should I not be skiing? should you not be skiing? should he not be skiing? should we not be skiing? should you not be skiing? should they not be skiing?
Perfect	V-ing perfect
should I not have skied? should you not have skied? should he not have skied? should we not have skied? should you not have skied? should they not have skied?	should I not have been skiing? should you not have been skiing? should he not have been skiing? should we not have been skiing? should you not have been skiing? should they not have been skiing?