The Participle passive is an adjective, denoting the completion of the action or energy expressed by the verb; as, arbhar buailte threshed corn.
The Simple Tenses which belong to all verbs are the Preterite or Future, besides which the verb Bi to be, and the defective verb Is I am, have a Present Tense[[61]].
The Present expresses present existence, state, or energy.
The Preterite Affirmative and Negative expresses past time indefinitely. The Preterite Subjunctive corresponds to the English Tenses formed by the auxiliaries would, could, &c. In general it denotes that the action or energy of the verb takes place eventually or conditionally. The Pret. Aff. or
Neg. is used sometimes in this sense, like the English, when the Pret. Subj. occurred in the preceding clause of a sentence, as, na'm biodh tus' an so, cha d' fhuair mo bhrathair bàs, if thou hadst been here, my brother had not [would not have] died; mur bitheamaid air deanamh moille bha sinn a nis air pilltinn air ar n-ais, if we had not lingered, we had [should have] now returned, Gen. xliii. 10.
The Future marks future time indefinitely. This Tense is used in a peculiar sense in Gaelic, to signify that an action or event takes place uniformly, habitually, according to ordinary practice, or the course of nature. Thus; Blessed is he that considereth the poor, expressed according to the Gaelic idiom, would be, Blessed is he that will consider, &c. A wise son maketh a glad father, in Gaelic would run, A wise son will make, &c. Your patient, I am told, is in a bad way; he neither enjoys rest, nor takes medicine. Nay, his situation is worse than you know of; yesterday, he became delirious, and is now almost unmanageable; he tosses his arms, and endeavours to beat every one within his reach. In Gaelic, will enjoy—will take—will toss—will endeavour. In like manner, a great many Gaelic Proverbs express a general truth by means of the Future tense; e.g., bithidh dùil ri fear feachd, ach cha bhi dùil ri fear lic, There is hope that a man may return from war, but there is no hope that a man may return from the grave; literally, there will be hope—there will be no hope. Teirgidh gach ni r' a chaitheamh, every thing wears out in the using; literally,—will wear out[[62]].
The Compound Tenses mark different modifications of time,
which will be easily understood by analysing their component parts.
In the Active Voice, the compound tenses of the first order denote that the action is going on, but not completed at the time specified by the auxiliary verb, or its adjuncts; as, ta mi ag bualadh, I am at striking, i.e., I am striking; bha mi ag bualadh an dé, I was striking yesterday.
Those of the second order denote that the action is newly completed and past, at the time marked by the auxiliary verb; ta mi iar bualadh, I am after striking, i.e., I have struck, Je viens de frapper; Bha mi iar bualadh, I was striking, i.e., I had struck.