My ds (7 and in year 2) loves reading and would read all night if i let him. Because of this, he gets through loads of books. I have made a real effort to make sure the reads ones appropriate to his age, but i am sure there are quite a few books he reads that he doesn't fully comprehend. He mainly reads to himself so i can't be sure of everything he reads and whether it is beyond him if you see what i mean. Does this matter or will he benefit from reading these books anyway?