Basic grammatical rule. Best way to remember those is by reading it aloud and judging it by how familiar it sounds. Example: singular pass becomes passes, arch becomes arches, fax becomes faxes, and stash becomes stashes. Of course, however, there are exceptions, but I hope this helped nonetheless.
The sentence that show Dexter’s interest in Judy Jones
has more to do with her beauty than her personality in this excerpt from F.
Scott Fitzgerald's "Winter Dreams" is Dexter surrendered a part of
himself to the most direct and unprincipled personality with which he had ever
come in contact.