英语 · 单词

did

(助动词)

释义

• 助动词 · A1

  Used with another verb to form questions and negative statements in the past.

  Did you enjoy your trip last weekend?

• 助动词 · A2

  Used instead of repeating a verb that was already mentioned.

  She said she would call me, and she did.

• 助动词 · B1

  Used before a main verb to emphasize that something really happened in the past.

  I did lock the front door before leaving.