What change is needed in the phrase 'walking a long the aisle'?

The phrase "walking a long the aisle" contains a common spelling and usage mistake. The correct phrase should use "along" instead of "a long." The term "along" indicates movement in a forward direction alongside something, which is fitting in the context of walking down an aisle.

On the other hand, "a long" refers to a considerable distance or duration, which doesn’t appropriately convey the intended meaning of moving beside or within the aisle. This distinction is critical for maintaining proper grammar and clarity in writing, making the correction necessary for conveying the intended action accurately without creating confusion.