Grammar Agreement Questions Medium
The rule for agreement with purpose clauses is that the verb in the purpose clause should be in the subjunctive mood. This means that it should be in the base form of the verb, without any added -s or -es endings. This is because purpose clauses express an action or intention that is not yet realized or completed. For example, in the sentence "She studied hard so that she could pass the exam," the verb "could" is in the subjunctive mood to show the purpose or intention of passing the exam.