English verb conjugation CAN STRAIGHTEN

Regular verb: straighten - straightened - straightened

Affirmation

Simple form

I can straighten
you can straighten
he can straighten
we can straighten
you can straighten
they can straighten

V-ing form

I can be straightening
you can be straightening
he can be straightening
we can be straightening
you can be straightening
they can be straightening

Perfect

I can have straightened
you can have straightened
he can have straightened
we can have straightened
you can have straightened
they can have straightened

V-ing perfect

I can have been straightening
you can have been straightening
he can have been straightening
we can have been straightening
you can have been straightening
they can have been straightening

Negation

Simple form

I cannot straighten
you cannot straighten
he cannot straighten
we cannot straighten
you cannot straighten
they cannot straighten

V-ing form

I cannot be straightening
you cannot be straightening
he cannot be straightening
we cannot be straightening
you cannot be straightening
they cannot be straightening

Perfect

I cannot have straightened
you cannot have straightened
he cannot have straightened
we cannot have straightened
you cannot have straightened
they cannot have straightened

V-ing perfect

I cannot have been straightening
you cannot have been straightening
he cannot have been straightening
we cannot have been straightening
you cannot have been straightening
they cannot have been straightening

Interrogative form

Simple form

can I straighten?
can you straighten?
can he straighten?
can we straighten?
can you straighten?
can they straighten?

V-ing form

can I be straightening?
can you be straightening?
can he be straightening?
can we be straightening?
can you be straightening?
can they be straightening?

Perfect

can I have straightened?
can you have straightened?
can he have straightened?
can we have straightened?
can you have straightened?
can they have straightened?

V-ing perfect

can I have been straightening?
can you have been straightening?
can he have been straightening?
can we have been straightening?
can you have been straightening?
can they have been straightening?

Interro-negative form

Simple form

can I not straighten?
can you not straighten?
can he not straighten?
can we not straighten?
can you not straighten?
can they not straighten?

V-ing form

can I not be straightening?
can you not be straightening?
can he not be straightening?
can we not be straightening?
can you not be straightening?
can they not be straightening?

Perfect

can I not have straightened?
can you not have straightened?
can he not have straightened?
can we not have straightened?
can you not have straightened?
can they not have straightened?

V-ing perfect

can I not have been straightening?
can you not have been straightening?
can he not have been straightening?
can we not have been straightening?
can you not have been straightening?
can they not have been straightening?

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