Source: http://dcc.dickinson.edu/grammar/latin/substantive-clauses-purpose
Timestamp: 2019-04-19 18:18:21+00:00

Document:
He warns him to avoid all suspicion.
He urges them not to lose heart.
I beg and pray you to aid him.
He ordered them to search.
He persuades Casticus to usurp royal power.
He ordered his men not to throw back any weapon at all.
Note— With any verb of these classes the poets may use the Infinitive instead of an object clause.
We urge [him] to speak.
Seek not to be told.
She attempts to turn, etc.
For the subjunctive without ut with verbs of commanding, see § 565.a (below).
a. Iubeō (order) and vetō (forbid) take the Infinitive with Subject Accusative.
He orders Labienus to ascend the ridge of the hill.
He ordered the children to be brought to him.
He had forbidden the lieutenants to leave the work.
They forbade the return of the goods.
Note— Some other verbs of commanding, etc., occasionally take the Infinitive.
They order a bridge to be built.
The occasion warns us to be on our guard.
b.Verbs of wishing take either the infinitive or the subjunctive. With volō (nōlō, mālō) and cupiō the infinitive is commoner, and the subject of the infinitive is rarely expressed when it would be the same as that of the main verb. With other verbs of wishing the Subjunctive is commoner when the subject changes, the infinitive when it remains the same.
Subject of dependent verb different same as that of the verb of wishing.
I wished to be made augur.
I am eager to hand over my watch to you.
I wish to be a judge, not a teacher.
I wished to be called a soldier of Cæsar.
I desire to be merciful.
Subject of dependent verb different from that of the verb of wishing.
I wish you to know.
We wish violence to be put down.
We wish you to reap the fruits of your virtue.
I wish he may get it.
I will never desire that you shall hear.
For volō and its compounds with the subjunctive without ut, see § 565 (below).
c. Verbs of permitting take either the subjunctive or the infinitive. Patior takes regularly the infinitive with subject accusative; so often sinō.
I allow you to pass by these matters.
He did not allow tents to be pitched.
They do not allow wine to be imported.
d. Verbs of determining, decreeing, resolving, bargaining, take either the subjunctive or the infinitive.
They had determined that Lucius Bestia should complain.
He determined to refuse battle.
Note 1— Different verbs of these classes with the same meaning vary in their construction (see the Lexicon). For verbs of bargaining, etc., with the Gerundive, see § 500.4.
Note 2— Verbs of decreeing and voting often take the infinitive of the 2nd periphrastic conjugation.
Regulus voted that the captives should not be returned.
e. Verbs of caution and effort take the subjunctive with ut. But cōnor (try) commonly takes the complementary infinitive.
Let me know as soon as possible (take care that I may understand).
Cæsar tried to rebuild the bridges.
Note 1— Cōnor sī also occurs (as B. G. 1.8); cf. mīror sī, etc., § 572.b, Note.
Note 2— Ut nē occurs occasionally with verbs of caution and effort (cf. § 531).
Take care and see that he lacks nothing.
For the subjunctive with quīn and quōminus with verbs of hindering etc., see § 558.
564. Verbs of fearing take the subjunctive, with nē affirmative and nē nōn or ut negative. In this use nē is commonly to be translated by that, ut and nē nōn by that not.
I fear that Verres has done, etc.
He feared that he should hurt the feelings, etc.
He feared that he should be disinherited.
I fear the orator grows feeble from old age.
I fear that I cannot grant you.
There is no danger that he will not think death desirable.
A verb may be prefixed (cf. § 560), making a complex sentence. Thus, vidē nē accidat; ōrō nē accidat; cavet nē accidat; when the prefixed verb is one of fearing, timeō nē accidat becomes Let it not happen, but I fear that it may. The origin of the ut clause is similar.
565. Volō and its compounds, the impersonals licet and oportet, and the imperatives dīc and fac often take the subjunctive without ut.
I wish you to love.
How I wish you had invited me!
I had rather you feared Cerberus.
We are allowed to complain.
Dīc exeat. Tell him to go out.
Note 1— In such cases there is no ellipsis of ut. The expressions are idiomatic remnants of an older construction in which the subjunctives were Hortatory or Optative and thus really independent of the verb of wishing etc. In the classical period, however, they were doubtless felt as subordinate. Compare the use of cavē and the subjunctive (without nē) in prohibitions (§ 450), which appears to follow the analogy of fac.
Note 2— Licet may take (1) the subjunctive, usually without ut; (2) the simple infinitive; (3) the infinitive with subject accusative; (4) the dative and the infinitive (see § 455.1). Thus, I may go is licet eam, licet īre, licet mē īre, or licet mihi īre.
For licet in concessive clauses, see § 527.b.
Note 3— Oportet may take (1) the subjunctive without ut; (2) the simple infinitive; (3) the infinitive with subject accusative. Thus I must go is oportet eam, oportet īre, or oportet mē īre.
a. Verbs of commanding and the like often take the subjunctive without ut.
He orders him to visit the Remi.
He asks him to cease.
He calls Mnestheus [and orders that] his comrades shall make ready the fleet.
Note— The subjunctive in this construction is the Hortatory Subjunctive used to express a command in indirect discourse (§ 588).
566. A substantive clause used as the object of a verb becomes the subject when the verb is put in the passive (Impersonal Construction).
Cæsar was requested to make an investigation.
I think we must be allowed to use a Greek word.
(care is taken by Cæsar lest, etc.).
a. With verbs of admonishing, the personal object becomes the subject and the object clause is retained.
We were warned to be careful.
Monērī vīsus est nē id faceret. (id. 56) He seemed to be warned not to do it.
b. Some verbs that take an infinitive instead of a subjunctive are used impersonally in the passive, and the infinitive becomes the subject of the sentence.
It is not allowed to speak.
c. With iubeō, vetō, and cōgō, the subject accusative of the infinitive becomes the subject nominative of the main verb, and the infinitive is retained as complementary (Personal Construction).
They are ordered to be present on the following day.
He was ordered to go into exile.
Simonides was forbidden to sail.
The Mandubii are compelled to go out.
1. Such verbs or verbal phrases are id agō, ad id veniō, caveō (nē), cēnseō, cōgō, concēdō, cōnstituō, cūrō, dēcernō, ēdīcō, flāgitō, hortor, imperō, īnstō, mandō, metuō (nē), moneō, negōtium dō, operam dō, ōrō, persuādeō, petō, postulō, praecipiō, precor, prōnūntiō, quaerō, rogō, scīscō, timeō (nē), vereor (nē), videō, volō.

References: § 565
 § 565
 § 500
 § 572
 § 531
 § 558
 § 560
 § 455
 § 527