What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a soild globe
问题描述:
What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a soild globe 还有 What it was to become是什么从句,在句子中,做什么成分
答
What it was to become是主语从句,在句子中充当主语
这究竟会变争什么样还不确定直到距今38亿至45亿年前当它成为一个固体的圆球
这是课文吧关于生物进化史的,这一句讲讲地球的形成