murk

易错句子The alley grew more murk as the sun went down.→正确表达The alley grew murker as the sun went down.

murk 是单音节形容词，比较级直接在词尾加 -er 变为 murker，不能用 more 构成比较级；more 只用于多音节形容词（如 more careful）。

易错句子That was the most murk night of the whole year.→正确表达That was the murkest night of the whole year.

单音节形容词的最高级用 -est 后缀构成，即 the murkest，而不是 the most murk；the most 用于多音节形容词的最高级。

易错句子The cellar was very murker than the hall.→正确表达The cellar was much murker than the hall.

very 不能修饰比较级，只能修饰原级（very murk）；要表示比较级程度上的“得多”，应用 much、far 等词修饰，故为 much murker。