mustverb詞源 1/məst/

• 1

  To do as a requirement; indicates that the sentence subject is required as an imperative or directive to execute the sentence predicate, with failure to do so resulting in a failure or negative consequence.

  • You must arrive in class on time.
  • This door handle must be rotated fully.
• 2

  To do with certainty; indicates that the speaker is certain that the subject will have executed the predicate.

  • If it has rained all day, it must be very wet outside.
  • Where would you have put the keyring? You couldn’t have lost it again! - I must have, because it's nowhere to be found.
• 3

  Used to indicate that something is very likely, probable, or certain to be true.

  • The children must be asleep by now.
  • There's the doorbell. It must be Dad.

mustnoun詞源 1/məst/

• 1

  Something that is mandatory, required or recommended.

  • If you're trekking all day, a map is a must.
  • "There are no musts in my life - I'm free, white, and twenty-one."

mustnoun詞源 2/məst/

• 1

  The property of being stale or musty.

• 2

  Something that exhibits the property of being stale or musty.

• 3

  Fruit juice that will ferment or has fermented, usually from grapes.

  • No sweet grape lies hidden here in the shade of its vine-leaves, No fermenting must fills and o'erflows the deep vats.

mustverb詞源 2/məst/

• 1

  To make musty.

• 2

  To become musty.

這個拼法也被記錄為下列字的變化形：

• musth