Express a hypothetical condition, 'if' or 'in case'.
もし + Verb-casual past + なら, もし + い-Adjective-casual past + なら, もし + な-Adjective + だったなら, もし + Noun + だったなら
The もし～たなら grammar point is used to express a hypothetical condition or situation in a more polite manner. It emphasizes the conditional part of a sentence and can be translated as 'if' or 'in case' in English. It is mainly used with verbs in the past tense, casual form.