I frequently hear this.
Problem:
The “at” in this question is unnecessary.
Explanation:
Any time that you see a sentence ending with a preposition, re-word it so that the preposition is not at the end. Trying this with the above question, we get, “At where are you?” With this re-wording, we see that “at” is unnecessary — because “where” implies “at”. Put another way, “where” is conceptually equivalent to “at” plus a location.
Solution:
“Where are you?”
I sometimes hear the wrong one spoken.
Problem:
“Different” and “differently” are not synonyms.
Explanation:
“Different” is an adjective. “Differently” is an adverb.
Solution:
Use “He looks different.” when you want to say that someone’s appearance has changed.
Use “He looks differently.” when you want to say that someone’s perspective has changed or that someone’s perspective is different than someone else’s perspective.
I often see or hear this.
Problem:
“Is comprised of” is meaningless.
Explanation:
Something is not comprised of X, Y, and Z. Instead, something comprises X, Y, and Z. If you know how to use “encompass” correctly, then you can test whether you are using “comprise” correctly.
Incorrect: The USA is encompassed of fifty states.
Correct: The USA encompasses fifty states.
Incorrect: The USA is comprised of fifty states.
Correct: The USA comprises fifty states.
Solution:
“Comprises”