不是.这是定语从句,修饰the last time省略了when完整的应该是:When was the last time when someone hugged you?the last time加when引导的定语从句，when可以省略省略的不应该是that吗?that在定语从句中要充当主语或宾语，而这里的引导词充当时间状语所以是when搞不清楚句子成分的时候你可以连句 Someone hugged me yesterday.yesterday作这个句子的状语，所以引导词应该也是状语谢谢!