The birds had already flown south for the winter.
Meaning: The sentence describes birds migrating to a warmer region for the winter season.
Choice of Words: Already is an adverb that means something has happened before a certain time or event. South is a direction on a compass or map, opposite of north. Winter is the coldest season of the year. When you put them together, "Already flown south for the winter" means the birds have left their current location and traveled to a warmer region for the winter season.
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Related Expressions