<span>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.</span>
Good practices:
Speaking clearly
Standing straight and tall
Controlling your pacing
Speaking with the same volume
Moving your hand often to keep attention
Bad practices:
Looking at your notes the entire time
The correct sentence is option two:
There have been many accidents during airshows; for example, last year the wind toppled a tent and equipment on top of bystanders.
The semicolon is a punctuation mark which indicates a pause, usually between two clauses that are not joined by a coordinating conjunction. Semicolons can also replace commas to separate elements in a list that already includes commas.
In the example sentence, the semicolon separates two clauses. Besides, a comma follows the introductory phrase "for example" because it introduces a clause.