connective N3 common casualpolitewritten

〜と同じくらい — about the same as ~

〜と同じくらい・とおなじくらい

Meaning

about the same as ~ / as ~ as — states that two things are roughly equal in degree

と同おなじくらい marks an equal-degree comparison: A is 'as ~ as' B. 同おなじ ('same') fixes the equivalence and くらい ('about') makes it approximate, so it's the natural 'as…as' — the positive counterpart of 〜ほど〜ない ('not as…as'). The quality usually follows: 兄あにと同おなじくらい背せが高たかい ('as tall as my brother').

Key sentence

弟おとうとは父ちちと同おなじくらい背せが高たかい。

My younger brother is about as tall as our father.

Formation

Attaches to	Form	Example
Noun + と同じくらい + adjective	N + と同おなじくらい + Aい/Naだ	去年きょねんと同おなじくらい / これと同おなじくらい

Examples

この店みせは駅前えきまえの店みせと同おなじくらい安やすい。

This shop is about as cheap as the one by the station.

今日きょうは昨日きのうと同おなじくらい暑あつい。

Today is about as hot as yesterday.

彼女かのじょは私わたしと同おなじくらいピアノが上手じょうずだ。

She's about as good at piano as I am.

Easily confused with

〜ほど〜ない Mirror images of degree: と同おなじくらい says two things are *equal* ('as ~ as'); 〜ほど〜ない says the subject *falls short* ('not as ~ as'). Equality vs deficit. 〜と同じでと同おなじで says things are the *same in kind/identical*; と同おなじくらい says they're the *same in degree/amount* (roughly equal on a scale).

Notes

ぐらい freely replaces くらい here (父ちちと同おなじぐらい). Without 同おなじ, plain 〜くらい〜 can also express 'as ~ as' for extent.

See 〜と同じくらい in real sentences

Jengo shows 〜と同じくらい the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.

Study it in Jengo

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