based on what we know ,you can't clon human beings.

问题描述:

based on what we know ,you can't clon human beings.
based on what we know 这句话的主语是什么?

我们大家都知道,属于独立主格结构的一种形式, 当发表某人的看法观点时, 其逻辑主语不必跟句子主语一致.不需要主语的