doubt that my
father would come_.

4. Where the verb has no Future Active Participle, or where it stands in
the passive voice, its Future character may be indicated by the use of the
particles mox, brevi, statim, etc., in connection with the Present and
Imperfect Subjunctive; as,--

non dubito quin te mox hujus rei paeniteat, _I do not doubt that you
will soon repent of this thing;_

non dubitabam quin haec res brevi conficeretur, _I did not doubt that
this thing would soon be fnished._

TENSES OF THE INFINITIVE.

270. 1. The tenses of the Infinitive denote time not absolutely, but _with
reference to the verb on which they depend._ Thus:--

a) The Present Infinitive represents an act as _contemporaneous with_ the
time of the verb on which it depends; as,--

videtur honores adsequi, _he seems to be gaining honors_;

videbatur honores adsequi, _he seemed to be gaining honors_.

b) The Perfect Infinitive represents an act as _prior to_ the time of the
verb on which it depends; as,--

videtur honores adsecutus esse, _he seems to have gained honors_;

visus est honores adsecutus esse, _he seemed to have gained honors_.

c) The Future Infinitive represents an act as _subsequent to_ that of the
verb on which it depends; as,--

videtur honores adsecuturus esse, _he seems to be about to gain
honors_;

visus est honores adsecuturus esse, _he seemed to be about to gain
honors_.

2. Where the English says '_ought to have done_,' '_might have done_,'
etc., the Latin uses debui, oportuit, potui (debebam, oportebat, poteram),
with the Present Infinitive; as,--

debuit dicere, _he ought to have said_ (lit. _owed it to say_);

oportuit venire, _he ought to have come_;

potuit videre, _he might have seen_.

a. Oportuit, volo, nolo (and in poetry some other verbs), may take a
Perfect Infinitive instead of the Present; as,--

hoc jam pridem factum esse oportuit, _this ought long ago to have been
done_.

3. PERIPHRASTIC FUTURE INFINITIVE. Verbs that have no Participial Stem,
express the Future Infinitive Active and Passive by fore ut or futurum esse
ut, with the Subjunctive; as,--

spero fore ut te paeniteat levitatis, _I hope you will repent of your
fickleness_ (lit. _hope it will happen that you repent_);

spero futurum esse ut hostes arceantur, _I hope that the enemy will be
kept off_.

a. The Periphra