I left very early last night, but I wish I hadn't left so early.
我昨晚离开得非常早,但我希望我没有离开那么早。[大学英语六级]
If we were able to discover lowly forms of life like bacteria on another planet, it would completely change our view of ourselves.
如果我们能够在另一颗行星上找到诸如细菌的那种低等生命,那么这个发现将彻底改变我们对我们自己的看法。