1、get back
恢复（原来的状态）
Then life started to get back to normal.
随后生活又恢复了正常。
I couldn't get back to sleep.
我再也睡不着了。
回到，重提（原来的话题）
It wasn't until we had sat down to eat that we got back to the subject of Tom Halliday.
我们直到坐下来吃饭时才又提起汤姆·哈利迪这个话题。
对…进行报复
The divorce process should not be used as a means to get back at your former partner.
不应该在办理离婚手续上报复以前的伴侣。
I'm going to get you back so badly you'll never to be able to show your face again.
我要狠狠地还以颜色，让你从此无脸见人。
2、go back
追溯到；回溯到
The feud with the Catholics goes back to the 11th century.
与天主教的夙怨可以追溯到11世纪。
Our association with him goes back four years.
我们同他的合作是从4年前开始的。
回到（过去）；回顾
If you go back to 1960, you'll find that very few jobs were being created.
如果回到1960年，你会发现工作机会寥寥无几。