1) The specific tense in the first sentence is the past subjunctive tense. It is used to express a hypothetical or unreal situation in the present or future. In this case, “had” is the past subjunctive form of the verb “have.”

2) The specific tense in the second sentence is the past perfect tense. It is used to indicate an action that was completed before another past action or time. In this case, “had repaired” is the past perfect form of the verb “repair.”