It then became possbile for universities to use the system as well划分句子成分

It then became possbile for universities to use the system as well划分句子成分
It then became possbile for universities to use the system as well划分句子成分

It then became possbile for universities to use the system as well划分句子成分
在那个时候,大专院校也能够使用该系统了.
1 It (形式主语)then （时间状语）became （谓语）possbile （表语）for universities （逻辑主语）to use the system （真正主语）as well（语气词）
2 for universities to use the system （真正主语）,it (形式主语)