哥哥姐姐们帮我看看这句英语啥意思?

哥哥姐姐们帮我看看这句英语啥意思?Sometimes she reads a few lines,puts down the book,walks a few steps and thinks for while and then walks away with the book.谢谢了…尽量再把属于什么句式说一下……越详细越好,麻烦大家了…