Here's an example I've just invented. Very basic but gives an idea of the required structure (I've taught CE English).
Q: How does the author give his reader a vivid picture of the attack?
A:
P - The author uses personification to give us a picture of the attack.
E - He writes, 'the gas sought out the soldiers mercilessly, it's creeping tendrils reaching for them one by one.'
E - By portraying the gas as an enemy that is actively targeting the soldiers, the reader gets a vivid picture of how frightening and threatening the attack must have been. It feels scarier, more real and more immediate because we can easily imagine being hunted.
He might be asked to 'PEE' twice or even three times. Another point might be that the text uses similes, onomatopoeia or specific detail.
Another style of PEE question might ask something like:
'What kind of person is Fred? Use the text to support your answer.'
An answer for that could be:
P - Fred is a very impatient person.
E - In the story Fred says, 'get a move on, George. You've been ages and I want a go.'
E - this suggests that Fred is finding it hard to wait his turn. He is rude to his friend and does not wait quietly.
His school should have loads of past papers and practice books that they use with the children?
If not, get the latest ISEB CE Practice book.