In the preparation of this book we deeply acknowledge the help and advice of a number of colleagues of our Departamento de Filología Inglesa (Lengua Inglesa), Universidad de Sevilla, Spain. A vote of thanks goes to Tony Dawson, our formerly active member of our research group now retired, who was able to masterly disentangle lexical nuances both in English and in Spanish. We should not forget other colleagues of our research group, especially Joaquín José Fernández Domínguez and Ángel Jiménez Fernández, whose notes and observations were always very useful. Although unaware of the mammoth task we were involved in, Jane Arnold and Anthony Bruton have also earned our gratitude as we exposed them to many tricky questions and whose answers have benefited us in the long term. Mary O’Sullivan in particular deserves our heartfelt thanks for illuminating us with her insightful comments in the numerous intricacies looming high above us in the analytical process of some verbal units. Finally, our indebtedness also to Aránzazu Ascunce, from the University of Hawaii, who spent almost six months in our Department and generously committed herself to read some parts of the draft of this book. Needless to say, all their guidance and expertise do not go hand in hand with the possible mistakes that can be found, which is our responsibility.