out 1 /aʊt/ ●●● S1 W1 adverb 1 FROM INSIDE from inside an object, container, building, or place OPP in
She opened her suitcase and took out a pair of shoes.
Lock the door on your way out.
Charlotte went to the window and looked out.
Out you go (=used to order someone to leave a room)!
The keys must have fallen out of my pocket.
Get out of here!
Someone had torn several pages out of her diary.
I don’t think I’d have the courage to jump out of a plane.
All the roads out of the city were snowbound.
out came/jumped etc
The egg cracked open and out came a baby chick.
According to my research,
"I jumped out of the plane", "out" in this case is an adverb, and adverb can stand alone so we can say "I jumped out" and "of the plane" is implied.
But some people say "out of" in the above sentence are double prepositions (source). I don't get it.
"from" is always a preposition, not an adverb because it can never stand alone. So, in the sentence "The noise came from under the sink", we see 2 prepositions "from" & "under". If we omit "from", the sentence "The noise came under the sink" sounds strange.
The third example, instead of saying "The slippers are for being worn in the house, not outside", if we say "The slippers are for the house" then it is a bit strange, some suggest "The slippers are for in the house", which I think it is just a kind of sentence contraction not 2 prepositions before a noun. Am I right?
Could anyone explain this for me, this is so confusing?
Are they adverbs or prepositions?