1. 動詞
   不及物動詞:
   發出警告, 發出預告
   預先通知, 預報
   及物動詞:
   警告...(人)
   告誡...(人)
   提醒...(人)
   warn that ...(完整句):
   警告說...
   預先通知說...
   

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   同義字詞
   advise,alert,caution,forewarn,wake
   

例句

1. So I ought to warn you about Dan.
2. No one else to warn you of upcoming horrors.
3. Should they have no platform to warn others.
4. Write and warn the company against repetition.
5. Warn them that this is a little more challenging!
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