Insert alpha
Insert alpha is a instance of the general transformational rule 'affect alpha'. Few rules that insert material in the course of a derivation are currently being defended. Some examples are of-insertion, and post-d-structure insertion of the subject of tough-movement constructions.
Link
Utrecht Lexicon of Linguistics
References
- Chomsky, N. 1981. Lectures on Government and Binding, Foris, Dordrecht.