McCarthy, Michael - O'Dell, Felicity. English vocabulary in use. Cambridge, Cambridge Univ. Press, 1995.

The book has 100 two-page units. In most units, the left-hand page explains the words and expressions to be studied in that unit. Where appropriate, it gives information about how the words are used as well as their meaning. The right-hand page checks that you have understood the information on the left-hand page by giving you a series of exercises practising what you have just learnt. Occasionally the right-hand page will also teach you some more new words.