How easy? A Second grade (7 to 8 year old) level book that has better constructed sentences is the Frog and Toad books and you can get the Audio to listen as you read. These are level 2 books for beginning readers that are beyond simple words and very short sentences. As this is for an adult, the stories are more interesting than the simple level one books.
An example is on amazon usa and this contains 4 books.
book :
http://www.amazon.com/Frog-Toad-Book...dp/0439655277/
audio:
http://www.amazon.com/Frog-and-Toad-...dp/B0006LZUIU/ it can also be purchased as a CD.
A sample of sentence construction can be seen with the look inside option here:
http://www.amazon.com/Days-Frog-Toad...dp/0064440583/