modality N3 common casualpolitewritten

とは限らない — not necessarily ~

とは限らない ・ とはかぎらない

Meaning

Key sentence

Expensive things aren't necessarily good.

Formation

Attaches toFormExample
clause / noun (plain) [clause](plain) + とはかぎらない; N(+だ) + とはかぎらない いいとはかぎらない / しあわせだとはかぎらない

Variants

かならずしも〜とはかぎらない Often framed with かならずしも ('not necessarily'): かならずしも安全あんぜんとはかぎらない.

Examples

Just because someone's Japanese doesn't mean they're necessarily good at kanji.
The rich aren't necessarily happy.
Effort doesn't always lead to success.

Easily confused with

See とは限らない in real sentences

Jengo shows とは限らない the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.

Study it in Jengo

Sources Compiled with reference to A Dictionary of Intermediate Japanese Grammar.

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