English verb conjugation CAN SUSTAIN

Regular verb: sustain - sustained - sustained

Affirmation

Simple form

I can sustain
you can sustain
he can sustain
we can sustain
you can sustain
they can sustain

V-ing form

I can be sustaining
you can be sustaining
he can be sustaining
we can be sustaining
you can be sustaining
they can be sustaining

Perfect

I can have sustained
you can have sustained
he can have sustained
we can have sustained
you can have sustained
they can have sustained

V-ing perfect

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

Negation

Simple form

I cannot sustain
you cannot sustain
he cannot sustain
we cannot sustain
you cannot sustain
they cannot sustain

V-ing form

I cannot be sustaining
you cannot be sustaining
he cannot be sustaining
we cannot be sustaining
you cannot be sustaining
they cannot be sustaining

Perfect

I cannot have sustained
you cannot have sustained
he cannot have sustained
we cannot have sustained
you cannot have sustained
they cannot have sustained

V-ing perfect

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

Interrogative form

Simple form

can I sustain?
can you sustain?
can he sustain?
can we sustain?
can you sustain?
can they sustain?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Page top