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

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
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

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
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

What it was to become 是这个句子的主语部分。what 在此引导一个主语从句，同时what 又在该从句中做了become的表语。它将要变成什么。
what he said made me sad.

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 .
一切都是不确定的，直到4.5至3800000000年前，当宇宙尘埃形成固体地球.
.