Yes. It is a prepositional phrase used as an adverb (answers when).
No, "at first" is not a prepositional phrase. It is an adverbial phrase that indicates the initial stage or the beginning of something.
A second prepositional phrase in a sentence that modifies part of the first prepositional phrase. There can also be a third nested prepositional phrase that modifies part of the second prepositional phrase, and so on. For example: Mary ran (to the end (of the street.)) The first prepositional phrase is "to the end" and the second prepositional phrase is "of the street" where "of the street" modifies "end" so "of the street" is a nested prepositional phrase. I am excited (for the birthday party (for Ashley.)) The first prepositional phrase is "for the birthday party" and the second prepositional phrase is "for Ashley" where "for Ashley" modifies "birthday party" so "for Ashley is a nested prepositional phrase. A non-nested prepositional phrase would be a second prepositional phrase that does not modify part of the first prepositional phrase. For example: Mary ran (to the street) (in the morning.) The first prepositional phrase is "to the street" which modifies "ran." Mary ran to the street. The second prepositional phrase is "in the morning" which also modifies "ran." Mary ran in the morning.
Yes, "in an environment" is a prepositional phrase. It begins with the preposition "in" and includes the noun phrase "an environment." Prepositional phrases provide more information about location or time.
Each year is NOT a prepositional phrase. Believe it or not, each is an adjective. Each is describing year.
No, "in the summer" would be a prepositional phrase.
Yes, "in time" is an adverbial prepositional phrase.
Yes. It is a prepositional phrase, used as an adverb.
No, "at first" is not a prepositional phrase. It is an adverbial phrase that indicates the initial stage or the beginning of something.
A second prepositional phrase in a sentence that modifies part of the first prepositional phrase. There can also be a third nested prepositional phrase that modifies part of the second prepositional phrase, and so on. For example: Mary ran (to the end (of the street.)) The first prepositional phrase is "to the end" and the second prepositional phrase is "of the street" where "of the street" modifies "end" so "of the street" is a nested prepositional phrase. I am excited (for the birthday party (for Ashley.)) The first prepositional phrase is "for the birthday party" and the second prepositional phrase is "for Ashley" where "for Ashley" modifies "birthday party" so "for Ashley is a nested prepositional phrase. A non-nested prepositional phrase would be a second prepositional phrase that does not modify part of the first prepositional phrase. For example: Mary ran (to the street) (in the morning.) The first prepositional phrase is "to the street" which modifies "ran." Mary ran to the street. The second prepositional phrase is "in the morning" which also modifies "ran." Mary ran in the morning.
"At that time" is the prepositional phrase.
"At that time" is the prepositional phrase.
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Yes, it is a phrase that indicates time. It will be an adverbial phrase.
Yes, "in an environment" is a prepositional phrase. It begins with the preposition "in" and includes the noun phrase "an environment." Prepositional phrases provide more information about location or time.
Each year is NOT a prepositional phrase. Believe it or not, each is an adjective. Each is describing year.
The prepositional phrase is in the park. Camping is not part of the prepositional phrase.
on a camping trip = a prepositional phrase