Third conditional and other uses of the past perfectRegret, and the earlier of two past events.Related learning areasEnglish GrammarRelated conceptsAdjectives — order, gradability, and comparisonAdverbs — form and positionbe, do, and have as auxiliary and main verbscan, could, and be able toFirst and second conditionalsFuture forms — will and be going toComes afterFirst and second conditionalsQuestionsAll questions in this subjectStart learningStart free practice