I enjoyed the movie very much. I wish I had read the book from which it was made.
电影不错,我希望我读过原著。[wish + 主语 = 过去完成时 = 愿望之事在wish以前发生。]
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上,笔尖落在地板上的一张纸上,