go back后面加什么

go back to do something意思是,回去,（然后）做什么什么；

go back to doing something意思是本来在做某事,被打断后,回去继续做刚才做的事. 两种用法都存在的。

例句

If you are not happy about a repair, go back and complain.

如果你对修理不满意，就回去投诉。

Everyone thought I was crazy to go back, but I wouldn\'t be moved.

人人都认为我回去是疯了，可我是不会动摇的。

Of course we want to go back some day—it\'s our country, our real home.

我们当然希望有一天能回去—那是我们的祖国，我们真正的家。