
Originally Posted by
carlylorelle
I am currently in a second year university syntax and semantics linguistics class. We are learning all about infinit[ive] clauses and I just can[']t seem to grasp how to spot them at all. Some of the obvious one I can get but these sentences I can[']t and was wondering if someone could help me?
The subject of a finite clause is overt, that is, you can see it or hear it (e.g., the child wants candy). With an infinitive clause, you cannot see or hear the subject (e.g., to eat her vegetables. The verb to eat lacks an overt subject, which is what makes it an infinitive clause. "Clause", not phrase. On the surface level (the level we see and hear), the string of words to eat her vegetables looks like a phrase because it lacks a subject, but at its underlying or semantic level, it has a subject, one that's just not realized visually or phonetically (e.g., the mother wants Sue, (Sue) to eat her vegetables).
1a) The child wants candy,
subject: child
finite verb: wants
object: candy
1b) but the mother wants her to eat her vegetables.subject: mother
finite verb: wants
object: her
complement: to eat her vegetables
1c)
to eat her vegetablessubject:
non-finite verb: to eat

object: her vegetables
2a) She decided
2b) to leave her job for unspecified reasons.
3a) She arranged for her sisters
3b) to care for their sick mom.
4a) To save money requires diligence;
4b) to spend money is easy.