do sb a favour用法介绍该结构表示“帮助某人”，也可说成do a favour for sb，注意其中有不定冠词。如：Would you do me a favour please? 请你帮我个忙，好吗?He is always ready to do a favour for his classmates. 他总是乐于帮助同学。以下各句均可表示“劳驾请把窗户打开”。注意，当 favour 后有定语修饰时，其前习惯上要用定冠词：Do me a favour and open the window. Do me a favour by opening the window. Do me a favour—open the window, please. Do me the favour to open the window. Do me the favour of opening the window.

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