不愧（是）
truly lives up to being; is worthy of the name
Structure
主语 不愧是／不愧为 名词 ， 理由 ； 理由 ， （主语）不愧是／不愧为 名词
What it means
“Truly lives up to being”: confirms a reputation or title that the facts have just borne out, so it is always praise.
How it is built
Evidence，（subject） + 不愧是／不愧为 + title, or the other way round: 你一眼就看出了问题，不愧是老师傅 (you spotted it at a glance; a true old hand).
When to use it
不愧是 is spoken and neutral; 不愧为 is written. In speech, 真不愧是… or just 不愧是你！ The evidence sits in the other clause.
Watch out
✗ 他不愧是坏人: never for something bad. It also needs a known title or reputation behind it, plus the facts that prove it.
Examples
江苏不愧是经济大省，一场业余联赛也能“踢”出一股消费热潮。
Jiangsu truly lives up to its name as an economic powerhouse: even an amateur league can kick off a spending boom.
你一眼就看出了问题，不愧是老师傅。
You spotted the problem at a glance; you really are an old hand.
这里的小吃又多又地道，这座城市不愧为“美食之都”。
The street food here is plentiful and authentic; the city fully deserves its title of “capital of food”.
Learn this in Lesson 64 · HSK 6: 村超与体育经济 (Village leagues and the business of sport)
A dialogue, a reading, word cards with audio and a drill that uses it, in Learn Chinese with Bao. The first lessons of every level are free.
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