There are many ways to answer that question but the first might be to have them read more and more. Ask them to read aloud something from the cereal box in the morning.
As they read a book, stop them from time to time and ask, "What is happening in your story right now? Is there a problem the characters are facing? How do you think they will solve the problem (if there is one) or What do you think will happen next?"
The next question to pose is, "What words in the story make you think that?"
Reading is like a puzzle. We take it a part to read the words. Then we put it back together to get the meaning. Be sure to FINISH books. This shows students that there are many types of endings and that what we thought was going to happen maybe doesn't.
Another great way to increase your child's reading skills is to read to and with your child regularly. Pick fun books to read together: Boxcar Children books, E.B. White's books, Patricia Polacco books, your own favorite books from your childhood...and the list could go on and on.
Just enjoy reading together and talking about the story.
REMEMBER...READING NEVER GROWS OLD!!!