He didn't want the book to end.
Meaning: This sentence describes the boy's desire for the book to continue and his reluctance to see it come to an end.
Choice of Words: Didn't is a contraction of the words "did" and "not," Want means to desire or wish for something, Book is a written or printed work consisting of pages glued or sewn together along one side, and End means the final part or conclusion of something.
Alternative Expressions
Related Expressions