不知好歹

bù zhī hǎo dǎi

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释义

  1. 1. unable to differentiate good from bad (idiom)
  2. 2. not to know what's good for one
  3. 3. unable to recognize others' good intentions

不知好歹 的构成词

不
bù

no; not so

不知
bù zhī

not to know

好
hǎo

good

好
hào

to be fond of; to have a tendency to; to be prone to

好歹
hǎo dǎi

good and bad

歹
dǎi

bad

知
zhī

to know