I see your point of view: 'sleep' is synonymous with 'bed', but the semantics are off. The definition, provided by Oxford, above, works well with, say, "
Sleep is what we do at night, not in the day", but not with 'to sleep' in "He goes to sleep", as in that construct, 'sleep' refers to an act, not a place, and as such functions as part of an infinitive verb, which makes it verbal, not nominal:
- He goes to bed at 10 p.m. <prepositional phrase>
- He goes to sleep at 10 p.m. <infinitive phrase>
Above, two similar structures introduced by the word 'to' admit different semantics. One refers to a place, a bed, whereas the other refers to an act, sleep. This difference, the one between place and act, manifests as follows:
- to bed
- form: prepositional phrase: to + noun
- function: absolute noun phrase
- to sleep
- form: infinitive phrase: to + base verb
- function: absolute noun phrase
My point, 'sleep' is a verb, not a noun. It's the infinite 'to sleep' that functions as a noun.
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NOT A TEACHER *****
(1) Thank you for your most persuasive comments. Your posts show that
you have a solid background in grammar. We all -- native speakers and
learners -- always learn so much from your answers.
(2) If I am not mistaken, I believe that even the experts at the
university often disagree on how to interpret certain points of grammar.
(3) I was not able to find out much about this topic on the Web
(Needless to say, most people on this planet couldn't care less), and
we all realize the Web has a lot of misinformation.
(a) Nevertheless, I discovered that some people (rightly or wrongly)
feel that "go to sleep" is an example of verb + prepositional phrase.
(b) "I was afraid to go to sleep." Some felt = p.p.
"I was afraid to sleep." Some felt = infinitive.
(c) One "expert" cited: "Go back to sleep" as an example of "back" being
used with a "prepositional phrase."
(4) I checked my 1952 edition of
Funk & Wagnalls New Standard
Dictionary of the English Language. It listed all the noun uses, and then
it gave this phrase:
to go to sleep = to fall asleep
(5) When you say, "Go to sleep," it seems that you are saying:
Start sleeping. In other words, "sleep" seems to be a state. And
I believe that a state can qualify as a noun.
*****
It would be great if native speakers and learners were to
give us their opinions. In fact, how do other languages analyze
"go to sleep"?
*****
NOT A TEACHER *****