"In the model of Transformational grammar known as the Standard Theory (associated most closely with Noam Chomsky), it is customary to say that [If anything can go wrong, it will.] is the surface structure of the sentence; [If anything can go wrong, it will go wrong.] from which it is derived, is part of the deep structure. The steps that a given sequence goes through on its way to the surface structure - which may involve the application of a number of rules - constitute the derivation of that sequence…. A grammar would be transformational if it involves the notion of a derivation, consisting of some kind of underlying structure and steps leading from it to a surface structure, where all steps of the derivation are represented as trees, and it involves a system of rules that specify how the different stages of a derivation are related to each other…" This still-controversial linguistic theory is defined in Elgin, Suzette Haden,What is Linguistics?: Second Edition, (NJ, Prentice-Hall, 1979) p.55. Also, Grinder, John and Richard Bandler, The Structure of Magic, Vol I, (Palo Alto, Science And Behavior Books,1975) , and Chomsky, Noam, Aspects of the Theory of Syntax, [Mass : M.I.T. Press,1972]
A great deal of nonsense about this topic has been written over the years, especially as it has been applied to Neuro-Linguistic Programming (NLP), but it really is this simple, in essence, and I’ve found nothing to contradict it since John Grinder first lectured me on it at UCSC in 1971. The four simple operational rules of nominalization, distortion, insertion and deletion which govern transformation of experiential deep structure into surface structure provide an elegant and powerful analytical model for language usage.