1) They arrived home to find that the house has been burgled. Then, this subordinate clause is a finite clause (actually a noun clause) which will become the object of the infinitive ' to find '. 2) For her to have said that was inexcusable.
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She came home [to find / the dog on the bed].The non-finite clause in
AnonymousI first thought of them as to-infinitivalsYou were right. That's what they are.
Anonymousthere's a "to" as well as a past participle construction in it.Yes. That one also contains a past participle, but that doesn't mean that the underlined part as a whole is not a to-infinitival.