Here are some tips for writing a summary that does not spoil the story:
* Focus on the main points. What is the story about? What are the main events? Who are the main characters? Introduce the storyline but don't retell it in full.
* Avoid giving away too many details. Don't reveal any major twists or turns in the plot. Don't give away the ending.
* Use general language. Don't use specific names or places if they're not essential to the plot.
* Keep it short. A summary should be no more than a few paragraphs long.
Here's an example of how to write a summary without spoiling the story:
> "The book is about a young woman named Jane who moves to a new town and starts a new job. She meets a man named Rochester and falls in love with him. However, Rochester has a dark secret that could tear them apart."