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。]
First of all, they may have come to this planet of ours thousands or millions of years ago,
首先,他们可能在几千年前或几百年万年前已来过我们地球,