- A girl should be like a butterfly. Pretty to see, hard to catch.
I want to know how this could be?
-Pretty to see (someone) or to be see (by someone), or hard to be caught instead of hard to catch.
I think "pretty to be seen" and "hard to be caught" are more grammatical.
Because if we said that is pretty to see, that would mean if she is not beautiful, or ugly, she would not be able to see.