Which sentence is written correctly? As an enthusiastic reader, Sanjay often visits the library to check out new books. As an enthusiastic reader-Sanjay often visits the library to check out new books. (As an enthusiastic reader) Sanjay often visits the library to check out new books. As an enthusiastic reader Sanjay often visits the library to check out new books.

The first version of the sentence-As an enthusiastic reader, Sanjay often visits the library to check out new books-is the grammatically correct version. The sentence connects two different but related ideas. The fact that Sanjay is an enthusiastic reader is one idea, is connected to the action that he therefore visits the library often to check out new books. The comma in this sentence serves as a break to emphasize the relation between the two ideas.