There are several ways to gauge a person's book review:
1. Look for specific details: A person who has read and understood the book will typically provide specific details about the plot, characters, themes, and writing style in their review.
2. Check for personal insights: A thoughtful review will include the reviewer's personal insights and reflections on the book, including how it made them feel, what they learned from it, or any connections they made to their own life.
3. Consider the tone and language: A well-written review will be articulate, well-structured, and free of grammatical errors. The tone of the review can also give you an idea of the reviewer's enthusiasm or criticism towards the book.
4. Look for comparisons: A person who has a good understanding of the book will often compare it to other works by the same author, or to similar books in the same genre.
5. Check for spoilers: A thorough review will avoid giving away major plot twists or spoilers, as this shows respect for other readers who have not yet read the book.
Overall, a person's book review can provide valuable insights into their reading habits, preferences, and critical thinking skills.