以下是一些可以線上免費閱讀的英文故事書：
1. "The Adventures of Tom Sawyer" by Mark Twain
2. "The Chronicles of Narnia" by C.S. Lewis
3. "Charlie and the Chocolate Factory" by Roald Dahl
4. "Harry Potter" series by J.K. Rowling
5. "Little Women" by Louisa May Alcott
6. "The Lord of the Rings" by J.R.R. Tolkien
7. "James and the Giant Peach" by Roald Dahl
8. "Winnie the Pooh" by A.A. Milne
9. "Alice's Adventures in Wonderland" by Lewis Carroll
10. "The Boxcar Children" series by Gertrude Chandler Warner
您可以在各大線上圖書館網站（如Google Play Books、Kindle、Apple Books等）上找到這些書籍的線上版本，無需支付任何費用即可閱讀。此外，許多網站還提供有聲讀物版本，可以讓您通過聽故事來閱讀。希望這些推薦能夠幫助您找到喜歡的英文故事書！