English verb conjugation
MAY SKI

Regular verb: ski - skied - skied

Affirmation

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

Negation

Simple form	V-ing form
I mayn't ski you mayn't ski he mayn't ski we mayn't ski you mayn't ski they mayn't ski	I mayn't be skiing you mayn't be skiing he mayn't be skiing we mayn't be skiing you mayn't be skiing they mayn't be skiing
Perfect	V-ing perfect
I mayn't have skied you mayn't have skied he mayn't have skied we mayn't have skied you mayn't have skied they mayn't have skied	I mayn't have been skiing you mayn't have been skiing he mayn't have been skiing we mayn't have been skiing you mayn't have been skiing they mayn't have been skiing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mayn't I ski? mayn't you ski? mayn't he ski? mayn't we ski? mayn't you ski? mayn't they ski?	mayn't I be skiing? mayn't you be skiing? mayn't he be skiing? mayn't we be skiing? mayn't you be skiing? mayn't they be skiing?
Perfect	V-ing perfect
mayn't I have skied? mayn't you have skied? mayn't he have skied? mayn't we have skied? mayn't you have skied? mayn't they have skied?	mayn't I have been skiing? mayn't you have been skiing? mayn't he have been skiing? mayn't we have been skiing? mayn't you have been skiing? mayn't they have been skiing?