English verb conjugation CAN LENGTHEN

Regular verb: lengthen - lengthened - lengthened

Affirmation

Simple form

I can lengthen
you can lengthen
he can lengthen
we can lengthen
you can lengthen
they can lengthen

V-ing form

I can be lengthening
you can be lengthening
he can be lengthening
we can be lengthening
you can be lengthening
they can be lengthening

Perfect

I can have lengthened
you can have lengthened
he can have lengthened
we can have lengthened
you can have lengthened
they can have lengthened

V-ing perfect

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

Negation

Simple form

I can't lengthen
you can't lengthen
he can't lengthen
we can't lengthen
you can't lengthen
they can't lengthen

V-ing form

I can't be lengthening
you can't be lengthening
he can't be lengthening
we can't be lengthening
you can't be lengthening
they can't be lengthening

Perfect

I can't have lengthened
you can't have lengthened
he can't have lengthened
we can't have lengthened
you can't have lengthened
they can't have lengthened

V-ing perfect

I can't have been lengthening
you can't have been lengthening
he can't have been lengthening
we can't have been lengthening
you can't have been lengthening
they can't have been lengthening

Interrogative form

Simple form

can I lengthen?
can you lengthen?
can he lengthen?
can we lengthen?
can you lengthen?
can they lengthen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

can't I lengthen?
can't you lengthen?
can't he lengthen?
can't we lengthen?
can't you lengthen?
can't they lengthen?

V-ing form

can't I be lengthening?
can't you be lengthening?
can't he be lengthening?
can't we be lengthening?
can't you be lengthening?
can't they be lengthening?

Perfect

can't I have lengthened?
can't you have lengthened?
can't he have lengthened?
can't we have lengthened?
can't you have lengthened?
can't they have lengthened?

V-ing perfect

can't I have been lengthening?
can't you have been lengthening?
can't he have been lengthening?
can't we have been lengthening?
can't you have been lengthening?
can't they have been lengthening?

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