a systematic presentation of facts and principles on a subject and the conclusions reached by the author
This sentence has INCORRECT GRAMMAR. However,the conjunction is but, and is part of the correlating conjunction "not only...but also."
CORRECT FORMS - conjunctions connect identical functions
Cathy won not only a blue ribbon but also the championship trophy. Cathy not only won a blue ribbonbut also took home the championship trophy.
Let's work this out together:
The world has seen many wars, but the two world wars in the twentieth century have been particularly devastating.
Now, break it down: You have two clauses here joined by a conjunction. (1) The world has seen many wars... (2) ...the two wars in the twentieth century have been particularly devastating. And, the conjunction "but." (I added the comma above for grammatical accuracy.)
There is no prepositional phrase in the first clause; you have a simple subject, predicate, object construction.
The second clause contains the prepositional phrase. Easiest way to find it is to identify the part of speech of each word:There are eleven:
"Your birthday is on a Sunday next year."
The prepositional phrase in this sentence is "on a Sunday."
The prepositional phrase is "among the finalists."
The conjunction "neither...nor" is called a correlating or correlative conjunction.
The 4 prepositional phrases are:
The prepositional phrase is "inside the incubator" and functions as an adverb.
The word apart is an adverb. The others can all be prepositions; over and across can be adverbs.
The word "going" is not a preposition. It is a verb form or gerund (noun).
The word "play" is not a preposition.
correlating conjunction
The prepositional phrase is "roofs of houses."
Real Madrid of Spain have won the champion league 9 times.
The word either is not a preposition. It can be an adjective, adverb, or part of a conjunction (with or).
static final
If two people are "at each others' throats" there is hostility between them.
"Or" is not a preposition. It's a conjunction.
It is a coordinating conjunction. It connects the two sentences --- We arrived early + we could not find a seat
rationed their supplies