Основы теории английского языка. Листунова Е.И. - 63 стр.

       The infinitive used as an adverbial modifier of purpose may be
introduced by so as:
       a) Mother had kept back the dinner so as to have it just nicely
ready and hot for us (Leacock). She changed her dress, so as to look
as if she had been in some time, and ran to the gallery (Galsworthy);
       b) Of result or consequence, especially when the demonstrative
pronoun such or the adverbs enough, so, too are used in the sentence.
After so and such, as to is generally used:
       It was too dark to distinguish anything (Lawrence). Ben was too
busy to hear him now... (Aldridge). The rest of the conversation is not
important enough to be here related (Fielding). His tone was such as’
to allow no contradiction.
       Also in:
       Savina glanced back to find Arnie shaking Erik’s hand (M. Wi1sîn).
That night there was a storm and I woke to hear the rain lashing the
window-panes (Hemingway). He shouldered and urged them forward to
where he had set his valises, only to find one of them gone (Norris).
       For the use of the infinitive in the function of a secondary
predicate in complexes see «The Accusative with the Infinitive», «The
Nominative with the Infinitive», and «Constructions with the Subject
of the Infinitive Introduced by for».
       For the use of the infinitive in the function of a secondary
subject (the nominal part of a complex) see «The Use of the Pronoun
It as an Object».

                    Accusative with the Infinitive

      1. Some transitive verbs are followed by an object (a noun in the
common case or a pronoun in the objective case) with an infinitive
attached to it: I see the boy (him) run.
      The relation between the noun (or pronoun) and the infinitive
is similar to that of subject and predicate. In this function the infini-
tive may be called a «secondary predicate» (âòîðîñòåïåííûé ïðåäèêàò)
and the noun (or pronoun) a «secondary subject» (âòîðîñòåïåííûé
ñóáúåêò).
      Thus in the sentence/see the boy (him) run two things are pred-
icated (stated, asserted): the first predication (ïðåäèêàöèÿ) is made
about the subject of the sentence/and is expressed by the predicate of
the sentence see, a verb in the finite form; the second predication

                                 – 63 –