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male gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to

English verb conjugation CAN CHALLENGE

Regular verb: challenge - challenged - challenged


Affirmation

Simple form
I can challenge
you can challenge
she can challenge
we can challenge
you can challenge
they can challenge
V-ing form
I can be challenging
you can be challenging
she can be challenging
we can be challenging
you can be challenging
they can be challenging
Perfect
I can have challenged
you can have challenged
she can have challenged
we can have challenged
you can have challenged
they can have challenged
V-ing perfect
I can have been challenging
you can have been challenging
she can have been challenging
we can have been challenging
you can have been challenging
they can have been challenging

Negation

Simple form
I can't challenge
you can't challenge
she can't challenge
we can't challenge
you can't challenge
they can't challenge
V-ing form
I can't be challenging
you can't be challenging
she can't be challenging
we can't be challenging
you can't be challenging
they can't be challenging
Perfect
I can't have challenged
you can't have challenged
she can't have challenged
we can't have challenged
you can't have challenged
they can't have challenged
V-ing perfect
I can't have been challenging
you can't have been challenging
she can't have been challenging
we can't have been challenging
you can't have been challenging
they can't have been challenging

Interrogative form

Simple form
can I challenge?
can you challenge?
can she challenge?
can we challenge?
can you challenge?
can they challenge?
V-ing form
can I be challenging?
can you be challenging?
can she be challenging?
can we be challenging?
can you be challenging?
can they be challenging?
Perfect
can I have challenged?
can you have challenged?
can she have challenged?
can we have challenged?
can you have challenged?
can they have challenged?
V-ing perfect
can I have been challenging?
can you have been challenging?
can she have been challenging?
can we have been challenging?
can you have been challenging?
can they have been challenging?

Interro-negative form

Simple form
can't I challenge?
can't you challenge?
can't she challenge?
can't we challenge?
can't you challenge?
can't they challenge?
V-ing form
can't I be challenging?
can't you be challenging?
can't she be challenging?
can't we be challenging?
can't you be challenging?
can't they be challenging?
Perfect
can't I have challenged?
can't you have challenged?
can't she have challenged?
can't we have challenged?
can't you have challenged?
can't they have challenged?
V-ing perfect
can't I have been challenging?
can't you have been challenging?
can't she have been challenging?
can't we have been challenging?
can't you have been challenging?
can't they have been challenging?