have a monkey on one's back

例句：

1. 1.He felt so embarrassed that he had to have a monkey on his back.
   他感到如此尴尬，以至于不得不背上一只猴子。
2. 2. She was so tired that she couldn't even have a monkey on her back.
   她太累了，甚至背不动一只猴子。
3. 3. The old man had a monkey on his back, and it was causing him a lot of trouble.
   这位老人背上背着一只猴子，这给他带来了很多麻烦。