Adverbial clauses
Verbal auxiliaries, affixes, adverbs, and particles that indicate adverbial clauses.
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purpose: the clause states the purpose for which the main clause action is taking place. Often called a "final" clause: 'He was saving his money so that his son could go to college'.
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concessive: translated in English as 'although, even though, despite the fact that': 'She was saving her money, even though she was a wealthy woman'.