The authors would like to thank Della Summers, Director - Longman Dictionaries, for granting them permission to use the Longman Learners’ Corpus and the British National Corpus as sources of information for this new edition. At the same time, we are deeply indebted to all those who have designed, managed and contributed to these invaluable databanks.
Our sincere thanks are also extended to Judith Aguda for editing the entire manuscript with meticulous care and super-human patience, to Alison Steadman for co-ordinating the production stages, and to Lizzie Warren for overseeing the project from start to finish.
We have not forgotten those who made important contributions to the first edition and we would like to reacknowledge our debt to Sue Maingay, Kelly Davis, Diane Sutton and Mona Scheraga, and to the University of Cambridge Local Examinations Syndicate.
Finally, we must thank the countless foreign students of English who have provided the content of both editions.