The document discusses the subjunctive mood in English and its various forms:
- The past perfect subjunctive is used to express unreal past situations and has the same form as the past perfect tense. Examples include "I wish they had arrived on time" and "I would've bought the dress if there hadn't been such a queue."
- The past subjunctive refers to unreal or improbable present/future situations and has the same form as the past simple except for the verb "to be." Examples include "If I were you, I would apply now" and "I wish you were here."
- The present subjunctive is identical to the bare infinitive form and is