bù​chéng HSK6

rhetorical particle

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rhetorical particle adverb
used at the end of a rhetorical question to imply 'can it be that...?' or 'is it possible?'

Is it possible that you still don't understand?

unable adverb
to fail to complete or achieve something; unable to

I don't think this can be done.

won't do adverb
to be unacceptable, inappropriate, or out of the question

If he doesn't agree, that simply won't do.

Frequency

Movie subtitles
1.79 per million appears in 1% of films
Written text
23.5 per million

Details

HSK 3.0
Level 6

Sources

Definitions
CC-CEDICT