English verb conjugation COULD SHELVE

Regular verb: shelve - shelved - shelved

Affirmation

Simple form

I could shelve
you could shelve
he could shelve
we could shelve
you could shelve
they could shelve

V-ing form

I could be shelving
you could be shelving
he could be shelving
we could be shelving
you could be shelving
they could be shelving

Perfect

I could have shelved
you could have shelved
he could have shelved
we could have shelved
you could have shelved
they could have shelved

V-ing perfect

I could have been shelving
you could have been shelving
he could have been shelving
we could have been shelving
you could have been shelving
they could have been shelving

Negation

Simple form

I couldn't shelve
you couldn't shelve
he couldn't shelve
we couldn't shelve
you couldn't shelve
they couldn't shelve

V-ing form

I couldn't be shelving
you couldn't be shelving
he couldn't be shelving
we couldn't be shelving
you couldn't be shelving
they couldn't be shelving

Perfect

I couldn't have shelved
you couldn't have shelved
he couldn't have shelved
we couldn't have shelved
you couldn't have shelved
they couldn't have shelved

V-ing perfect

I couldn't have been shelving
you couldn't have been shelving
he couldn't have been shelving
we couldn't have been shelving
you couldn't have been shelving
they couldn't have been shelving

Interrogative form

Simple form

could I shelve?
could you shelve?
could he shelve?
could we shelve?
could you shelve?
could they shelve?

V-ing form

could I be shelving?
could you be shelving?
could he be shelving?
could we be shelving?
could you be shelving?
could they be shelving?

Perfect

could I have shelved?
could you have shelved?
could he have shelved?
could we have shelved?
could you have shelved?
could they have shelved?

V-ing perfect

could I have been shelving?
could you have been shelving?
could he have been shelving?
could we have been shelving?
could you have been shelving?
could they have been shelving?

Interro-negative form

Simple form

couldn't I shelve?
couldn't you shelve?
couldn't he shelve?
couldn't we shelve?
couldn't you shelve?
couldn't they shelve?

V-ing form

couldn't I be shelving?
couldn't you be shelving?
couldn't he be shelving?
couldn't we be shelving?
couldn't you be shelving?
couldn't they be shelving?

Perfect

couldn't I have shelved?
couldn't you have shelved?
couldn't he have shelved?
couldn't we have shelved?
couldn't you have shelved?
couldn't they have shelved?

V-ing perfect

couldn't I have been shelving?
couldn't you have been shelving?
couldn't he have been shelving?
couldn't we have been shelving?
couldn't you have been shelving?
couldn't they have been shelving?

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