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do是什么词 用法有哪些

原创 2025-03-17 21:30:44 次阅读

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英语中的"do":词性与用法解析

"do"是英语中一个多功能的词汇,其发音为[duː,də,dəʊ],具有多种词性和词义。它不仅用于构成疑问句和否定句,还可以代替动词,用于加强语气,表达“做”、“干”、“进行”、“表现”以及“的确”等多种意思。

do的词性

"do"作为助动词,用于一般现在时,而"did"用于一般过去时,"done"则是"do"的过去分词形式。除此之外,"do"还可以作为实义动词,表示“做”、“干”等动作。在口语中,"do"的否定形式常常缩写,如"do not"简写为"don't","did not"简写为"didn't"。需要注意的是,助动词"do"不能与be动词或动词原形同时使用。

do的用法

"do"在不同时态中的用法如下:

  • 一般现在时:I often do my homework in the evening.
  • 第三人称单数的一般现在时:He does his lessons every day.
  • 一般过去时:They did homework yesterday.
  • 现在进行时:He is doing his homework now.
  • 完成时:He has done his homework. / He had done his homework before he went out. / His homework is done.

作为助动词,"do"常用于疑问句和否定句:

  • 一般疑问句:Do you like English?
  • 选择疑问句:Does he go to school by bus or by bike?
  • 特殊疑问句:How do you go to school?
  • 反义疑问句:You like English, don't you?
  • 否定句:I don't like English.

此外,"do"还可以用于强调,此时需要重读,如:He does need your help. (does重读,强调确实需要帮助)。"do"也可以代替其他动词,使句子更简练,例如:Who cleaned the windows? Tom did.

以"do"开头的词组

以下是一些常见的以"do"开头的词组:

  • do a good deed - 做一件好事
  • do away with - 去掉,废除;弄死;浪费
  • do by - 对待
  • do for a living - 为了生计而做
  • do good to (=do sb good) - 有益于
  • do harm to (=do sb harm) - 有害于
  • do in - 使精疲力竭
  • do it all - 服无期徒刑;多才多艺;包办一切
  • do it up [美国俚语] - 干净利落
  • do its work - 有效,有作用
  • do much - 极有用
  • do one’s best - 尽某人最大努力

以上内容对"do"的知识点进行了整理,希望能帮助你更好地理解和使用这个多功能的词汇。

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