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 cannot lifeguard you cannot lifeguard he cannot lifeguard we cannot lifeguard you cannot lifeguard they cannot lifeguard	I cannot be lifeguarding you cannot be lifeguarding he cannot be lifeguarding we cannot be lifeguarding you cannot be lifeguarding they cannot be lifeguarding
Perfect	V-ing perfect
I cannot have lifeguarded you cannot have lifeguarded he cannot have lifeguarded we cannot have lifeguarded you cannot have lifeguarded they cannot have lifeguarded	I cannot have been lifeguarding you cannot have been lifeguarding he cannot have been lifeguarding we cannot have been lifeguarding you cannot have been lifeguarding they cannot 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 I not lifeguard? can you not lifeguard? can he not lifeguard? can we not lifeguard? can you not lifeguard? can they not lifeguard?	can I not be lifeguarding? can you not be lifeguarding? can he not be lifeguarding? can we not be lifeguarding? can you not be lifeguarding? can they not be lifeguarding?
Perfect	V-ing perfect
can I not have lifeguarded? can you not have lifeguarded? can he not have lifeguarded? can we not have lifeguarded? can you not have lifeguarded? can they not have lifeguarded?	can I not have been lifeguarding? can you not have been lifeguarding? can he not have been lifeguarding? can we not have been lifeguarding? can you not have been lifeguarding? can they not have been lifeguarding?