English verb conjugation MAY TOUGHEN

Regular verb: toughen - toughened - toughened

Affirmation

Simple form

I may toughen
you may toughen
he may toughen
we may toughen
you may toughen
they may toughen

V-ing form

I may be toughening
you may be toughening
he may be toughening
we may be toughening
you may be toughening
they may be toughening

Perfect

I may have toughened
you may have toughened
he may have toughened
we may have toughened
you may have toughened
they may have toughened

V-ing perfect

I may have been toughening
you may have been toughening
he may have been toughening
we may have been toughening
you may have been toughening
they may have been toughening

Negation

Simple form

I may not toughen
you may not toughen
he may not toughen
we may not toughen
you may not toughen
they may not toughen

V-ing form

I may not be toughening
you may not be toughening
he may not be toughening
we may not be toughening
you may not be toughening
they may not be toughening

Perfect

I may not have toughened
you may not have toughened
he may not have toughened
we may not have toughened
you may not have toughened
they may not have toughened

V-ing perfect

I may not have been toughening
you may not have been toughening
he may not have been toughening
we may not have been toughening
you may not have been toughening
they may not have been toughening

Interrogative form

Simple form

may I toughen?
may you toughen?
may he toughen?
may we toughen?
may you toughen?
may they toughen?

V-ing form

may I be toughening?
may you be toughening?
may he be toughening?
may we be toughening?
may you be toughening?
may they be toughening?

Perfect

may I have toughened?
may you have toughened?
may he have toughened?
may we have toughened?
may you have toughened?
may they have toughened?

V-ing perfect

may I have been toughening?
may you have been toughening?
may he have been toughening?
may we have been toughening?
may you have been toughening?
may they have been toughening?

Interro-negative form

Simple form

may I not toughen?
may you not toughen?
may he not toughen?
may we not toughen?
may you not toughen?
may they not toughen?

V-ing form

may I not be toughening?
may you not be toughening?
may he not be toughening?
may we not be toughening?
may you not be toughening?
may they not be toughening?

Perfect

may I not have toughened?
may you not have toughened?
may he not have toughened?
may we not have toughened?
may you not have toughened?
may they not have toughened?

V-ing perfect

may I not have been toughening?
may you not have been toughening?
may he not have been toughening?
may we not have been toughening?
may you not have been toughening?
may they not have been toughening?

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