1.《牛津高阶英汉双解词典》注明someplace = somewhee

2.《 新牛津英汉双解大词典 》注明someplace既可作副词也可做代词：

someplace  adverb& pronoun

(informal, chiefly N. Amer.). another term for somewhere

(非正式，主北美)。 同 somewhere

3.《现代英汉综合大辞典》注明somewhere可作名词：

n.

某地

The troops have been sent to somewhere at the front. 部队被派到前线某地去了。