English verb conjugation
CAN CROSS

Regular verb: cross - crossed - crossed

Affirmation

Simple form	V-ing form
I can cross you can cross he can cross we can cross you can cross they can cross	I can be crossing you can be crossing he can be crossing we can be crossing you can be crossing they can be crossing
Perfect	V-ing perfect
I can have crossed you can have crossed he can have crossed we can have crossed you can have crossed they can have crossed	I can have been crossing you can have been crossing he can have been crossing we can have been crossing you can have been crossing they can have been crossing

Negation

Simple form	V-ing form
I cannot cross you cannot cross he cannot cross we cannot cross you cannot cross they cannot cross	I cannot be crossing you cannot be crossing he cannot be crossing we cannot be crossing you cannot be crossing they cannot be crossing
Perfect	V-ing perfect
I cannot have crossed you cannot have crossed he cannot have crossed we cannot have crossed you cannot have crossed they cannot have crossed	I cannot have been crossing you cannot have been crossing he cannot have been crossing we cannot have been crossing you cannot have been crossing they cannot have been crossing

Interrogative form

Simple form	V-ing form
can I cross? can you cross? can he cross? can we cross? can you cross? can they cross?	can I be crossing? can you be crossing? can he be crossing? can we be crossing? can you be crossing? can they be crossing?
Perfect	V-ing perfect
can I have crossed? can you have crossed? can he have crossed? can we have crossed? can you have crossed? can they have crossed?	can I have been crossing? can you have been crossing? can he have been crossing? can we have been crossing? can you have been crossing? can they have been crossing?

Interro-negative form

Simple form	V-ing form
can I not cross? can you not cross? can he not cross? can we not cross? can you not cross? can they not cross?	can I not be crossing? can you not be crossing? can he not be crossing? can we not be crossing? can you not be crossing? can they not be crossing?
Perfect	V-ing perfect
can I not have crossed? can you not have crossed? can he not have crossed? can we not have crossed? can you not have crossed? can they not have crossed?	can I not have been crossing? can you not have been crossing? can he not have been crossing? can we not have been crossing? can you not have been crossing? can they not have been crossing?