在他提及太阳爆炸之前,他一直坚持月亮起源的评价理论,对月球距地球越来越近的预测提出批评,并提出论点说太阳正在减慢地球的转动.
（before he would make any reference to the solar explosion）（时间状语从句）,（he insisted on evaluating theories about the moon's origin,criticizing predictions that the moon would move closer to the earth,and presenting argument that the sun was slowing down the earth's rotation）（主句）
on----evaluating.,criticizing.,presenting.on 跟三个动名词短语作介词的宾语.