HSK 7-9
理所当然
lǐsuǒdāngránas it should be by rights (idiom); proper and to be expected as a matter of course; inevitable and right
别把别人的帮助视为理所当然。
Bié bǎ biérén de bāngzhù shìwéi lǐsuǒdāngrán.
Do not take other people's help for granted.
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Appears across levels (7-9) in the HSK 3.0 word list.