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Yes, before is a preposition. It also is an adverb and conjunction.
No, "at" is not typically used before the word "priority." It is more common to say "top priority" or "highest priority" without "at."
The word "during" is a preposition used for adverbial phrases. It represents the present time, and unlike the preposition-adverbs before and after, it cannot be used without an object.
The word before is a preposition. It can also be an adverb.
Example sentences for the noun 'priority':Priority was given to those who had injuries. (subject of the sentence)The safety of the passengers is our first priority. (predicate nominative)The expenses are listed in order of priority. (object of the preposition 'of')
The word "during" is a preposition used for adverbial phrases. It represents the present time, and unlike the preposition-adverbs before and after, it cannot be used without an object.
No, the word "when" is not a preposition. It is an adverb or a conjunction used to indicate time or a condition.
No, the word "because" cannot be used as a preposition. It is a subordinating conjunction used to introduce a reason or cause.
No, the word before is not an adjective. It is a preposition.
No, the word "if" is not a preposition. It is a conjunction that is used to introduce a conditional clause.
Yes, the word "prior" can function as a preposition when it is used to indicate something that comes before or precedes another event or action. For example, "She studied for the exam prior to the class."
The word "when" is not typically used as a preposition. It is most commonly used as an adverb to ask or express the time of an action or event.