8.44 types of purpose clause
There are two kinds of purpose clause.
Non-finite purpose clauses are the most common kind. They contain a 'to'-infinitive.
The subject of a non-finite purpose clause is always the same as the subject of the main clause.
Non-finite purpose clauses are explained in paragraphs 8.45 to 8.46.
Finite purpose clauses usually contain a 'that'-clause.
Finite purpose clauses are explained in paragraphs 8.47 to 8.48.