...if she had enough money the next year,she would go to Japan.老师,我对if时态有些不懂..比如第一句中,为什么从句完成时,主句进行时? 难道不该前后都用一般时态吗 (If you have exams tomorrow,why don't you study?)第二句She said 和 she had enough money 为什...
That's about how high an object would have to be orbiting straight up from the equator to constantly remain directly above the exact same spot on the rotating planet Earth."would have to be orbiting"是什么时态?为什么要使用这种时态?