A dangling participle happens when a participial phrase (a phrase starting with a verb ending in -ing or sometimes -ed) is placed in a sentence so that it seems to modify the wrong noun — or worse, no noun at all.
This causes confusion because the phrase doesn’t clearly or logically refer to the intended subject.
A participle is a verb form used as an adjective. Commonly:
Dangling:
Walking down the street, the trees were beautiful.
(It sounds like the trees were walking down the street, which is illogical.)
Corrected:
Walking down the street, I thought the trees were beautiful.
(Now the participial phrase clearly refers to I.)
Usually, it’s because the noun or pronoun that the participial phrase is supposed to describe is missing or misplaced near the phrase.
Dangling: After finishing the homework, the TV was turned on.
(TV didn’t finish the homework!)
Fixed: After finishing the homework, she turned on the TV.