Effective questions encourage real thinking, not just yes or no answers. These can be answered without reading from the book. Remember to focus on the positive aspects of the child's responses to encourage future attempts. When children respond to your questions it is important to listen carefully to what they say, and to respond to any questions they may have. Also, if a student has misunderstood a section of a story you may want to go back to that part of the book and reread it, clarifying any difficult vocabulary if necessary, to help the student understand what is going on.
Lets look at that part of the book again and see what it says.
The most important thing, however, when talking about a story with a child is to let them know that their ideas about what they have read are important and that you value what they have to say.