It has been a long time since i saw you last time.这句话的形式主语是it?那么它的真正主语是什么?如:It is a long time between 1900 to 2012.这句话的形式主语是it,真正主语是betweem 1900 to 2012.Between 1900 to 2012 is a long time.通顺

问题描述:

It has been a long time since i saw you last time.
这句话的形式主语是it?那么它的真正主语是什么?
如:It is a long time between 1900 to 2012.这句话的形式主语是it,真正主语是betweem 1900 to 2012.Between 1900 to 2012 is a long time.通顺