English verb conjugation
CAN LIFEGUARD

Regular verb: lifeguard - lifeguarded - lifeguarded

Affirmation

Simple form	V-ing form
I can lifeguard you can lifeguard he can lifeguard we can lifeguard you can lifeguard they can lifeguard	I can be lifeguarding you can be lifeguarding he can be lifeguarding we can be lifeguarding you can be lifeguarding they can be lifeguarding
Perfect	V-ing perfect
I can have lifeguarded you can have lifeguarded he can have lifeguarded we can have lifeguarded you can have lifeguarded they can have lifeguarded	I can have been lifeguarding you can have been lifeguarding he can have been lifeguarding we can have been lifeguarding you can have been lifeguarding they can have been lifeguarding

Negation

Simple form	V-ing form
I can't lifeguard you can't lifeguard he can't lifeguard we can't lifeguard you can't lifeguard they can't lifeguard	I can't be lifeguarding you can't be lifeguarding he can't be lifeguarding we can't be lifeguarding you can't be lifeguarding they can't be lifeguarding
Perfect	V-ing perfect
I can't have lifeguarded you can't have lifeguarded he can't have lifeguarded we can't have lifeguarded you can't have lifeguarded they can't have lifeguarded	I can't have been lifeguarding you can't have been lifeguarding he can't have been lifeguarding we can't have been lifeguarding you can't have been lifeguarding they can't have been lifeguarding

Interrogative form

Simple form	V-ing form
can I lifeguard? can you lifeguard? can he lifeguard? can we lifeguard? can you lifeguard? can they lifeguard?	can I be lifeguarding? can you be lifeguarding? can he be lifeguarding? can we be lifeguarding? can you be lifeguarding? can they be lifeguarding?
Perfect	V-ing perfect
can I have lifeguarded? can you have lifeguarded? can he have lifeguarded? can we have lifeguarded? can you have lifeguarded? can they have lifeguarded?	can I have been lifeguarding? can you have been lifeguarding? can he have been lifeguarding? can we have been lifeguarding? can you have been lifeguarding? can they have been lifeguarding?

Interro-negative form

Simple form	V-ing form
can't I lifeguard? can't you lifeguard? can't he lifeguard? can't we lifeguard? can't you lifeguard? can't they lifeguard?	can't I be lifeguarding? can't you be lifeguarding? can't he be lifeguarding? can't we be lifeguarding? can't you be lifeguarding? can't they be lifeguarding?
Perfect	V-ing perfect
can't I have lifeguarded? can't you have lifeguarded? can't he have lifeguarded? can't we have lifeguarded? can't you have lifeguarded? can't they have lifeguarded?	can't I have been lifeguarding? can't you have been lifeguarding? can't he have been lifeguarding? can't we have been lifeguarding? can't you have been lifeguarding? can't they have been lifeguarding?