female gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to
English verb conjugation COULD MODIFY
Regular verb: modify - modified - modified
Affirmation
Simple form
I could modifyyou could modify
he could modify
we could modify
you could modify
they could modify
V-ing form
I could be modifyingyou could be modifying
he could be modifying
we could be modifying
you could be modifying
they could be modifying
Perfect
I could have modifiedyou could have modified
he could have modified
we could have modified
you could have modified
they could have modified
V-ing perfect
I could have been modifyingyou could have been modifying
he could have been modifying
we could have been modifying
you could have been modifying
they could have been modifying
Negation
Simple form
I couldn't modifyyou couldn't modify
he couldn't modify
we couldn't modify
you couldn't modify
they couldn't modify
V-ing form
I couldn't be modifyingyou couldn't be modifying
he couldn't be modifying
we couldn't be modifying
you couldn't be modifying
they couldn't be modifying
Perfect
I couldn't have modifiedyou couldn't have modified
he couldn't have modified
we couldn't have modified
you couldn't have modified
they couldn't have modified
V-ing perfect
I couldn't have been modifyingyou couldn't have been modifying
he couldn't have been modifying
we couldn't have been modifying
you couldn't have been modifying
they couldn't have been modifying
Interrogative form
Simple form
could I modify?could you modify?
could he modify?
could we modify?
could you modify?
could they modify?
V-ing form
could I be modifying?could you be modifying?
could he be modifying?
could we be modifying?
could you be modifying?
could they be modifying?
Perfect
could I have modified?could you have modified?
could he have modified?
could we have modified?
could you have modified?
could they have modified?
V-ing perfect
could I have been modifying?could you have been modifying?
could he have been modifying?
could we have been modifying?
could you have been modifying?
could they have been modifying?
Interro-negative form
Simple form
couldn't I modify?couldn't you modify?
couldn't he modify?
couldn't we modify?
couldn't you modify?
couldn't they modify?
V-ing form
couldn't I be modifying?couldn't you be modifying?
couldn't he be modifying?
couldn't we be modifying?
couldn't you be modifying?
couldn't they be modifying?
Perfect
couldn't I have modified?couldn't you have modified?
couldn't he have modified?
couldn't we have modified?
couldn't you have modified?
couldn't they have modified?
V-ing perfect
couldn't I have been modifying?couldn't you have been modifying?
couldn't he have been modifying?
couldn't we have been modifying?
couldn't you have been modifying?
couldn't they have been modifying?