With his help, we could have succeeded.
With ~, 「~があれば」 / Without ~, 「~がなければ」
To hear him talk, you would think that he was a new student.
to不定詞句が条件を表す
The university students started at once; otherwise they would have missed the train bound for Tokyo.
otherwise「さもなければ」
わざわざありがとうございます😊🙏
丁寧にありがとうございます😊
とても助かりました!!!