Online Google Dictionary

could 中文解釋 wordnet sense Collocation Usage Collins Definition
Verb (modal)
/ko͝od/,
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coulding, present participle; coulded, past tense; coulds, 3rd person singular present; coulded, past participle;
  1. Used to indicate possibility
    • - they could be right
    • - I would go if I could afford it
  2. Used in making polite requests
    • - could I use the phone?
  3. Used in making suggestions
    • - you could always phone him
  4. Used to indicate annoyance because of something that has not been done
    • - they could have told me!
  5. Used to indicate a strong inclination to do something
    • - he irritates me so much that I could scream

  1. In the English language, a modal verb is an auxiliary verb that can be used to change the grammatical mood of a sentence. The key way to identify a modal verb is by its defectiveness (they have neither participles nor infinitives).
  2. Simple past of can; Used to politely ask for permission to do something; Used to politely ask for someone else to do something; Used to show the possibility that something might happen; Used to suggest something