<b><i>Only in third world countries <font color="#ee82ee">are you</font> allowed to ride on top of a train. </i></b><br/><br/>I wonder what kind of sentence is this because we have subject "you" after the verb "are". Could you tell me the sentence structure? <br/><br/>If it's tough to explain the sentence structure, at least, give me a few examples of the same kind.