English - rfvv, Monday, March 16, 2015 at 11:17pm

Question

1. I am good at playing the piano.
2. I am good at the piano.
3. I am good at playing basketball.
4. I am good at basketball.
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Are they all grammatical?

Answer 1

Yes, they are. The sentences "at playing..." are better because they are more specific. "...at the piano" and "at basketball" are more colloquial, but are correct.