in (i)a the preposition with is stranded.
(i) a Who did you speak with? b With who did you speak?
The example in (i)b shows the case where the preposition moves along with the wh-word (see Pied piping). Preposition-stranding is restricted: it cannot be applied to all prepositions, and it is impossible in at least French and Italian.
- Haegeman, L. 1991. Introduction to Government and Binding Theory, Oxford, Blackwell.
- Kayne, R. 1984. Connectedness and binary branching, Foris, Dordrecht