Which sentence demonstrates the correct use of inversion for emphasis?

A. They had never seen such a beautiful view.

B. Never they had seen such a beautiful view.

C. Never had they seen such a beautiful view.

D. They had seen never such a beautiful view.

核心考点：语法 - 考察倒装句的用法。解题思路：倒装结构通常用于强调句子的某些部分。选项分析：A. 正常语序，无倒装。B. 倒装错误，助动词位置错误。C. 正确的倒装结构，强调否定副词never。D. 语序错误，不符合语法规则。正确答案：C。易错点：混淆倒装结构的基本规则。

正确答案：C