nationwide

grammar · medium

易错句子The new policy will be implemented in nationwide.

正确表达The new policy will be implemented nationwide.

nationwide 是副词，不能作介词 in 的宾语。in 后面需要名词短语，而 nationwide 本身已表示“在全国范围内”，相当于 already contains the meaning of “in the nation”。去掉 in 后，副词 nationwide 直接修饰动词 implemented。

grammar · medium

易错句子The company has stores across the nationwide.

正确表达The company has stores nationwide.

nationwide 是副词，不能作介词 across 的宾语。across 后面需要名词短语，而 nationwide 本身已表示“遍及全国”，所以直接说 stores nationwide 即可，不需要 across the nation 或 across the nationwide。

grammar · medium

易错句子The product is sold nationwide across the country.

正确表达The product is sold nationwide.

nationwide 已经表示“在全国范围内”，再加 across the country 会造成语义重复。修改后只保留 nationwide，句子既简洁又符合副词用法。