A piece of money的用法和样例：
- I am sitting in the bar, was only a piece of money.
- And each gave to him a piece of money, and each, a gold ring.
- I need a piece of string to tie this parcel up.
- She was hit by a piece of falling masonry.
- The boy is daubing a piece of paper with red ink.
- Would you please give me a piece of paper?