The preposition "of" usually provides a specification for a part or attribute (number of people, best of the class, control of the country, rule of law, center of the building), a cause (died of smallpox), or composition (block of wood). It has also been used to indicate time references (of the recent past, of days gone by).
Also:
Of is the most common preposition in English. Usually it makes a link between two nouns or noun phrases eg a friend of mine, the Queen of England.
Of has many different meanings some of them are:
Of often means possession -- the owner of the dog
Of is used to link a member to its group -- the oldest of the three boys. a member of the band.
Of follows nouns referring to containers or units -- a bag of peanuts, a litre of milk.
No, "but" is typically used as a conjunction to contrast two ideas or clauses. It is not commonly used as a preposition in English grammar.
A preposition is used before a noun or pronoun to show its relationship to another word in the sentence. It indicates location, time, direction, or other relationships between elements in a sentence.
You use a preposition in a prepositional phrase, such as "I will be with you in a minute."
Nouns, pronouns, gerunds, and noun phrases can commonly stand after a preposition in a sentence.
use the preposition
The preposition "against" is typically used after the word "prejudice." For example, one might say "prejudice against a certain group of people."
When can you use than as a preposition rather than a conjunction?
no
no
after noun
At is a preposition. And is a conjunction.
at by