Conjugation of Portuguese Verb acabar

Participles

past participle	present participle
acabado	acabando

Portuguese verb chart key^*
person	singular	plural
first	I	we
second	you	you
third	he /she	they

Indicative Tenses

present
acabo	acabamos
acabas	acabais
acaba	acabam

preterite
acabei	acabámos
acabaste	acabastes
acabou	acabaram

future
acabarei	acabaremos
acabarás	acabareis
acabará	acabarão

past imperfect
acabava	acabávamos
acabavas	acabáveis
acabava	acabavam

past pluperfect
acabara	acabáramos
acabaras	acabáreis
acabara	acabaram

Subjunctive Tenses

present
acabe	acabemos
acabes	acabeis
acabe	acabem

preterite
acabasse	acabássemos
acabasses	acabásseis
acabasse	acabassem

future
acabar	acabarmos
acabares	acabardes
acabar	acabarem

Other Tenses

conditional
acabaria	acabaríamos
acabarias	acabaríeis
acabaria	acabariam

imperative
	acabemos
acaba	acabai
acabe	acabem

personal infinitive
acabar	acabarmos
acabares	acabardes
acabar	acabarem

^*Verbs are shown as radical + verb pattern or irregular verb. For example, the infinitive gostar conjugation is shown as 'gost' + 'ar'. The irregular first person singular preterite of ter conjugation is shown as tive.

picture of man with airplane — Can this MaN'S AErOplane teach you the Portuguese stress syllable?

-AR conjugation hints:

All second persons end in 's' except for the imperative and preterite indicative singular
All singulars for first and second persons end in a vowel except for the future and personal infinitive
All first person plurals end in '-mos'
All third person plurals end in 'm' except for future indicative
The future subjunctive and personal infinitive are the same
The future and pluperfect indicatives are the same except the stress syllable on the pluperfect is before the future and the first person singular and the third person plural suffixes are different
It is important to remember that all the subjunctive tenses are 'subject' unto the indicative tenses for creating the radical part of the verb. The radical for the present subjunctive is formed by dropping the final 'o' of the present indicative first person singular. The radicals for both the preterite and future subjunctives are formed by dropping the '-ram' from the preterite indicative third preson plural.
Considering the -ar and either the -er or -ir suffixes as opposite conjugations, the indicative and subjunctive present tenses are almost opposites. The radical of the present subjective is formed by dropping the final 'o' from the present indicative first person singular. The verb conjugation is formed as the opposite present indicative verb conjugation except the first person singular is the same as the third person singular.

Other verbs with the -ar conjugation pattern