to go it alone用来形容某人做某事是自己一个人去做，没有其他人的帮忙。
- Now that I have enough experience, I‘ve decided to go it alone and start my own business.
- I‘m not ready to go it alone yet. I need another few years working in this company.
- We don‘t need your help with the project. We‘ll go it alone and see what happens.
- After she left me, I felt completely alone.