As the starting point for the analysis of imperative clause structure, this chapter investigates the phenomenon of Verb Raising, or Vo-to-I" movement, in English. In finite clauses, the position of verbal heads, in V0 or I", has a wide range of highly visible syntactic consequences and this leads to the expectation that the determination of the position of main verbs and auxiliaries in imperatives will usefully inform the structure of that clause type as well.