英语.You’ll have to come back a day before the fl

英语.You'll have to come back a day before the fl
英语.You'll have to come back a day before the flight leaves to check for cancellations .分析一下句子中语法和成分,翻译一下句子,希望通俗易懂点,不要用电脑翻译.

你必须得在航班起飞前一天回来查明航班是否被取消.
before the flight leaves 是时间状语

to check for cancellations 是目的状语
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