爱情公寓 巨星降临:please help

来源：百度文库 编辑：高考问答 时间：2024/04/29 13:56:58
whether they will have a good harvest this year is still unknown.

请问边个系谓语动词

is是谓语动词

这个是主-系-表结构，在这样句子中，be动词一定是谓语动词

unknown是过去分词作形容词，根本不是动词

whether.....是个丛句，看作一个整体作主语

剩下的就只有is了

whether they will have a good harvest this year 是主语从句
整个句子的谓语是IS，系动词

unknown

is 是动词. unkonwn是adj.

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