English verb conjugation
MAY SKI

Regular verb: ski - skied - skied

Affirmation

Simple form	V-ing form
I may ski you may ski she may ski we may ski you may ski they may ski	I may be skiing you may be skiing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she ski? may we ski? may you ski? may they ski?	may I be skiing? may you be skiing? may she 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 she 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 she 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 she 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 she 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 she 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 she have been skiing? mayn't we have been skiing? mayn't you have been skiing? mayn't they have been skiing?