be through

• • 完成；做好(某事)：

    I'll be through with this in a few minutes.

    我几分钟就能把这件事做完。

  • 耐心已尽；弃绝；断绝关系(with):

    I'm through with him.

    我和他断绝了关系。

  • [电话用语]接通(to):

    After a few minutes' wait in the call-box,I was through.

    我在公共电话间等了几分钟后，电话就接通了。

  • 做完，完成
  • 不再往来，断绝关系
  • 完蛋
  • 打通关系