they spent a couple of days and nights on the farm

they spent a couple of days and nights on the farm

what连接前后两个部分,既是of的宾语,也引导后面的句子如果是which只能起其中的一个作用,which引导从句的话前面需要有先行词句子可以改为they spent a couple of days and nights on the farm of the situation（可以用一个更适合的词,暂时没想到） which would be considered a poor family.======以下答案可供参考======供参考答案1:因为‘would be considered a poor family.’少一个成分做这句分句的主语，而表指代的只有what

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