34 Advances in spoken discourse analysis
subjects, or for different teachers. At the moment, however, we must think
of the lesson as a stylistic type, which means that actually there is little
point in labelling the lesson as a unit. We could describe the ordering of
transactions into lessons in the texts we have, but that ordering varies for
each teacher and we can identify no restrictions on the occurrence of
different types.
‘Towards an analysis of discourse’ is a slightly modified version of Chapter
3 of Sinclair and Coulthard (1975) Towards an Analysis of Discourse,
14–60.