问题描述：
谁能帮我分析一下下面的英语句子,
It was luck again,according to Nina,that brought her the role in Mute Wife for which she is best konwn.
我想问一下上面句子中的that是做什么成分的,it不可能做的是名词从句,因为that在名词性从句中不充当成分,也不像定语从句,因为that之前没有先行词,所以我真的不知道that做的是什么成分了,
It was luck again,according to Nina,that brought her the role in Mute Wife for which she is best konwn.
我想问一下上面句子中的that是做什么成分的,it不可能做的是名词从句,因为that在名词性从句中不充当成分,也不像定语从句,因为that之前没有先行词,所以我真的不知道that做的是什么成分了,
问题解答：
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