... in the form of short lines, that separate a piece of information from the remaining part of the sentence – usually less formal than bracketsdative: of case, the part of a sentence forming ... Oxford Dictionary, 4th edn, Clarendon Press, Oxford, 19 54. Crystal, David, The Cambridge Encyclopaedia of the English Language, Cambridge University Press, Cambridge, 1995.Dictionary of Grammar, ... Oxford University Press, London, 1992.Nesfield, J.C., Outline of English Grammar, Macmillan & Co, London, 1929.Sayers, Dorothy, ‘The Lost Tools of Learning’, Oxford University paper, 1 947 .Swallow,...