Halliday & Matthiessen (2014: 619):
In many types of discourse the relation of cause figures very prominently as a cohesive agent. Some cause expressions are general, others relate more specifically to result, reason or purpose. Examples:
(i) general:||| We understand it still || that there is no easy road to freedom. ||| We know it well || that none of us [[ acting alone]] can achieve success. ||| We must therefore act together as a united people, for national reconciliation, for nation building, for the birth of a new world. |||
(ii) specific
[a] result:||| Now prices have sunk for secondary schools || and experienced secondary inspectors are shifting into primary and special schools with minimal training. ||| As a result, primary schools and teachers are being judged ‘failing’ by inspectors [[[ who have never taught younger children, || but only watched a couple of lessons on video during their training]]] ! |||
[b] reason:||| But you wouldn’t marry me? || – No. ||| I’m not your type. ||| I’d make you miserable. ||| I mean that. ||| I’d very probably be unfaithful || and that’d kill you. ||| Then I’d be unfaithful too, || to teach you a lesson. ||| It wouldn’t work. ||| You’d do it || to spite me. ||| I would never do it for that reason. |||
[c] purpose:Laertes: ||| I will do’t! ||| And for that purpose I’ll anoint my sword. |||
||| In 2011 the SUN Road Map will be translated into action || with a view to helping countries [[ affected by under-nutrition]] to achieve long-term reduction in under-nutrition || and realise the first Millennium Development Goal, || and to start demonstrating this impact within three years. ||| For that purpose the SUN Road Map envisages an open system of support to the implementation of SUN efforts by countries. |||