Preposition stranding

Preposition stranding, sometimes called P-stranding, is the syntactic construction in which a preposition with an object occurs somewhere other than immediately adjacent to its object—at the end of a sentence, for example. The preposition is then described as stranded, hanging or dangling. This kind of construction is widely found in Germanic languages, including English and the Scandinavian languages. Whether or not German and Dutch exhibit legitimate preposition stranding is debatable. Preposition stranding is also found in languages outside the Germanic family, such as Vata and Gbadi (two languages in the Niger–Congo family), and certain dialects of French spoken in North America.

In English

In English, preposition stranding is found, for instance in open interrogatives, wh relatives, and passive constructions sometimes known as pseudopassives.