We still don't know how many galaxies there are in the universe.什么句型结构?怎么分析
问题描述：
We still don't know how many galaxies there are in the universe.什么句型结构?怎么分析
答
定语从句和倒装句型.how many galaxies there are in the universe是宾语,而宾语又可改为陈述句为 there are how many galaxies in the universe,而本句又改为how many galaxies in the universe are there.