because引导从句在句子中的成分

请问各位老师，下面的句子中because引导because you're older than me的是主语从句吗？

Just because you're older than me doesn't mean you know everything.

我感觉because引导的从句在这里有表示让步的意思，请问这个理解对吗？

我看到有人把这个句子改写成：Just because you're older than me，(it) doesn't mean you know everything. 请问这时because是引导让步状语从句吗？另外我在网上找了半天，没有找到其它"Just because+ 从句，主句"这种结构的例句。请问这样改写表达地道吗？谢谢！

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分类：句式分析

最佳答案 2021-12-21 11:22

剑桥英语语法对because从句作主语和表语的例句和解释如下：

i Because some body parts have already been turned into commodities does not mean that an increasing trade in kidneys is desirable.

ii The reason I didn’t call you was because the phone was out of order.

Because could be replaced by the fact that in [i], that in [ii], and these latter versions would be widely preferred in formal style. In the subject structure [i], because is often modified by just, and the matrix VP is more or less restricted to doesn’t mean: Just because you’re older than me doesn’t mean you can order me around.

because从句作主语（常被just修饰）,because 可被 the fact that 替换。当主语为the reason时，because从句作表语，because可以被that替换。正式语体更倾向于用后二种结构，托福考试把the reason作主语，because从句作表语按照错误对待，即认为必须用that引导表语从句。也就是说以上二个例句中的because从句作主语和表语，都属于非正式语体用法。