have 最常用词，可指任何情况下的具有，无论是物质的或精神的。
hold 指拥有并保持财产及持有见解等，暗示不让别人拿走或占有。
own 不及本组的possess正式，多指所属关系，强调所有权，不管所属物是否在物主手中。
possess 较正式，指拥有或占有并能加以控制与支配，强调其归属；也指具有某种品质、才能、特点或性能等。
keep 指长时间地保有，保存某物，防止别人占去，强调安全和感情上的依附。
enjoy 指享有某种权利或长处，带有欣赏或喜爱的情感。
参考例句
1. I'll keep it for a souvenir. 我要将它保存下来作为纪念。
2. Keep a Dollar or Give a Dollar? 保留一美元还是给与一美元？
3. Please keep it for me till tomorrow. 请为我保管这件东西到明天。
英英解释
n.
1. the financial means whereby one lives
2. the main tower within the walls of a medieval castle or fortress
3. a cell in a jail or prison v.
1. keep in a certain state, position, or activity; e.g.,
2. continue a certain state, condition, or activity
3. retain possession of
4. prevent from doing something or being in a certain state
5. conform one's action or practice to
6. observe correctly or closely
7. look after; be the keeper of; have charge of
8. maintain by writing regular records
9. supply with room and board
10. allow to remain in a place or position
11. supply with necessities and support
12. fail to spoil or rot
13. celebrate, as of holidays or rites
14. keep under control; keep in check
15. maintain in safety from injury, harm, or danger
16. raise
17. retain rights to
18. store or keep customarily
19. have as a supply
20. maintain for use and service
21. hold and prevent from leaving
22. prevent (food) from rotting
