Encourage alternatives to book reports. For readers who struggle with reading, a standard report seems like punishment for getting through the book. Choose or write a theme song for the book, explaining what the song means and why it suits the book. Write a new ending for the book, stating why this ending is better. Create illustrations for the book, with a brief written explanation for each illustration.
Enthusiasm is the key to enjoyable storytelling.
If you like the story, it will show without extra effort on your part. Choose and read through the segment you want to share later. Not only will familiarity help prepare you, but you'll be ready for any questions your youngster may have. Don't be afraid to try different voices for different characters. Let your child read a few pages back to you.