finish up:固定搭配，以…结束
He could finish up dead or badly injured.
他到头来不是死就是重伤。
Maybe you too will finish up as prime minister.
说不定你最后也会当首相的呢。

have second thoughts: (重新考虑后)改变主意
By day 4, she seemed to have second thoughts.
到了旅游的第四天，她似乎有了别的想法。
Just because you're expected to do something, it doesn't mean that you will have second thoughts and regrets.
因为你期望做某事，但是那不意味着你不会重新考虑和懊悔。

get a crush on: 爱着，迷恋上…
It takes only a minute to get a crush on someone.
只需一分钟，就可以对一个人一见倾心。
Some teenager girls got a crush on the film star.
十几岁的女孩子一下子就爱上了那个电影明星了。