重点

1.fill one’s shoes 取代（某人）；接替（某人）的工作

eg. It'll be hard to find someone to fill her shoes when she retires.

等她退休后，很难找到人接替她的工作了。

2.step into one’s shoes 取代（某人）；接替（某人）的工作

eg. Who do you think will step into Sarah’s shoes when she leaves?

在Sarah离开之后，你认为谁能代替她的位置？

3.tie one’s shoes 改掉坏习惯

eg. He’ll never get promoted if he doesn’t tie his shoes.

如果他改不掉这些坏毛病，他永远也升不了职。