THE CONJUGATION OF IRREGULAR VERBS

There are four Verbs which have both regular and irregular forms. Both forms are valid, eventhough the irregular tends to be more common in spoken language and the regular are more frequently found in written format.

CONJUGATABLE TENSES

		ESSERE	HABER	IR and VADER	FACERE	DAR
Indicative
Present
I Person Singular	Io, Ia	so	ho	eo - vo	fo	do
II Person Singular	Tu, Tua	ses	has	is - vas	fas	das
III Person Singular	Esso, Essa, Esse - Vu - On - Il	se	ha	í- va	fa	da
I Person Plural	Noi, Noe	sem	hem	íam - vam	fem	dam
II Person Plural	Voi, Voe	set	hat	it - vat	fat	dat
III Person Plural	Essi, Esse, Esses - Vui, Vue	son	han	in - van	fan	dan
Imperfect
I Person Singular -	Io, Ia	éro
II Person Singular	Tu, Tua	éras
III Person Singular	Esso, Essa, Esse - Vu - On - Il	érat
I Person Plural	Noi, Noe	eravám
II Person Plural	Voi, Voe	eravát
III Person Plural	Essi, Esse, Esses - Vui, Vue	éran
Perfect
I Person Singular	Io, Ia	fúi	hebéi	eúi	féi	déi
II Person Singular	Tu, Tua	fúis	hebéis	eúis	féis	déis
III Person Singular	Esso, Essa, Esse - Vu - On - Il	fú	hebé	eú	fé	dé
I Person Plural	Noi, Noe	fúmus	hebémus	éumus	fémus	démus
II Person Plural	Voi, Voe	fúst	hebést	éust	fést	dést
III Person Plural	Essi, Esse, Esses - Vui, Vue	fúron	hebéron	eúron	féron	déron
Future
I Person Singular	Io, Ia	seró
II Person Singular	Tu, Tua	serás
III Person Singular	Esso, Essa, Esse - Vu - On - Il	será
I Person Plural	Noi, Noe	serém
II Person Plural	Voi, Voe	serét
III Person Plural	Essi, Esse, Esses - Vui, Vue	serán
Subjunctive
Present
I Person Singular	Io, Ia	sio		io	fio	dio
II Person Singular	Tu, Tua	sias		ias	fias	dias
III Person Singular	Esso, Essa, Esse - Vu - On - Il	sia(t)		ia(t)	fia(t)	dia(t)
I Person Plural	Noi, Noe	síam		íam	fíam	díam
II Person Plural	Voi, Voe	síat		íat	fíat	díat
III Person Plural	Essi, Esse, Esses - Vui, Vue	sían		ían	fían	dían
Perfect
I Person Singular	Io, Ia	fússi	hebéssi	eússi	féssi	déssi
II Person Singular	Tu, Tua	fússis	hebéssis	eússis	féssis	déssis
III Person Singular	Esso, Essa, Esse - Vu - On - Il	fússit	hebéssit	eússit	féssit	déssit
I Person Plural	Noi, Noe	fússimus	hebéssimus	eússimus	féssimus	déssimus
II Person Plural	Voi, Voe	fússist	hebéssist	eússist	féssist	déssist
III Person Plural	Essi, Esse, Esses - Vui, Vue	fússin	hebéssin	eússin	féssin	déssin
Future
I Person Singular	Io, Ia	sería
II Person Singular	Tu, Tua	serías
III Person Singular	Esso, Essa, Esse - Vu - On - Il	seríat
I Person Plural	Noi, Noe	seríam
II Person Plural	Voi, Voe	seríast
III Person Plural	Essi, Esse, Esses - Vui, Vue	serían
Conditional
Present
I Person Singular	Io, Ia	seréa
II Person Singular	Tu, Tua	seréas
III Person Singular	Esso, Essa, Esse - Vu - On - Il	seréat
I Person Plural	Noi, Noe	seréam
II Person Plural	Voi, Voe	seréast
III Person Plural	Essi, Esse, Esses - Vui, Vue	seréan
Imperative
Present
I Person Singular	Io, Ia
II Person Singular	Tu, Tua	sía		i - va	fa	da
III Person Singular	Esso, Essa, Esse - Vu - On - Il	síat		íat	fíat	díat
I Person Plural	Noi, Noe	siám		iám - vámos	fiam	diam
II Person Plural	Voi, Voe	siáte		ite	fate	date
III Person Plural	Essi, Esse, Esses - Vui, Vue	sían		ían	fían	dían
Future
Generic	Tu, Tua, On, Il, etc…	seré		iré	faré	daré

UNCONJUGATABLE TENSES

Infinite
Present
ESSERE	HABER	IR and VADER	FACERE	DAR
Gerund
Present
endo		eundo		dando
Participle
Past
sito, -a, -e		ito, -a, -e
Presente
ente		eunte
Future
futuro, -a, -e		ituro, -a, -e		daturo, -a, -e

Unless otherwise noted the forms not listed are regular.

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