当 appreciate 单独接动名词时，表示动名词是子句的主词。但如果 appreciate 接的是所有格形容词 + 动名词，动名词就不是指子句的主词了。appreciate 也可以接名词。
举例
- I appreciate having time off work.
- I appreciate your giving me time off work.
- I appreciate time off work.
- We appreciate eating chocolate cake.
- We appreciate his eating our chocolate cake.
- We appreciate chocolate cake.