Sexy cute girl with short cloth and car

You might think this is a surprising question but in fact many students find it quite difficult to decide where to end a group of words with a full stop. In fact, it's not a very easy thing to define a sentence. Many grammarians have tried but there is some disagreement about precisely what a sentence is. That need not worry us too much here because we only have to consider what a sentence is in practical terms in our academic essays.