a piece of painting的用法和样例：
- I need a piece of string to tie this parcel up.
- She was really a consummate piece of painting.
- She was hit by a piece of falling masonry.
- The boy is daubing a piece of paper with red ink.
- A piece of painting normally consists of the painting itself, calligraphic writing and seal stamps.
- Would you please give me a piece of paper?