在英语语法中，副词和介词是两个重要的语法成分。它们经常被用于修饰动词和名词，以便更准确地表达说话者的意思。在这篇文章中，我们将探讨副词和介词的结合形式- 副词短语。以下是一些副词短语的例子：
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at once - 立刻，马上
例如：I need to finish this report at once.
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by heart - 熟记，熟悉
例如：She knows all the lyrics to the song by heart.
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in vain - 徒劳，白费
例如：He tried to fix the computer, but it was in vain.
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on purpose - 故意地，有意地
例如：She spilled the drink on purpose.
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out loud - 大声地，出声地
例如：He read the book out loud.
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upside down - 颠倒，倒置
例如：The picture was hanging upside down.
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as usual - 像往常一样
例如：He arrived late, as usual.
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by accident - 偶然地，无意中
例如：I found this book by accident.
-
in public - 公开地，当众
例如：She was embarrassed to speak in public.
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on time - 准时地，按时
例如：The train arrived on time.
以上是一些副词短语的例子。它们可以帮助我们更具体地表达我们的意思，使我们的语言更加流畅和准确。希望这篇文章能对你有所帮助！
