介绍： 词根serv = serve, keep(safe) 服务，保持/保护

1. serve [sɜːv]
v. 为…服务；服役，任职；能起…作用；接待顾客，上（菜、饮料等）
The sofa had to serve as a bed.
只好拿沙发当床用了。

2. deserve [dɪ'zɜːv]
v. 应得，应受到（奖赏或惩罚）
The naughty boy deserved punishing. (或The naughty boy deserved to be punished...

介绍： 词根serv = serve, keep(safe) 服务，保持/保护

1. serve [sɜːv]
v. 为…服务；服役，任职；能起…作用；接待顾客，上（菜、饮料等）
The sofa had to serve as a bed.
只好拿沙发当床用了。

2. deserve [dɪ'zɜːv]
v. 应得，应受到（奖赏或惩罚）
The naughty boy deserved punishing. (或The naughty boy deserved to be punished.)
那个淘气的男孩应该受到惩罚。
【de-加强意义 + serv-服务→“服务所应得的报酬”】

3. observe [əb'zɜːv]
v. 观察；遵守，奉行(法律或协议)；评论
So far the ceasefire has been observed by both sides.
到目前为止，双方都遵守着停火协定。
【ob-在前方 + serv-保持（安全）→“观察；遵守”】

4. observation [‚ɒbzə'veɪʃən]
n. 观察，观察力；评述，评论
Art classes help develop children’s powers of observation.
美术课有助于提高儿童的观察力。

5. observance [əb'zɜːvəns]
n. (对法律、宗教、风俗或仪式的)遵守，奉行
Local councils should use their powers to ensure strict observance of laws.
地方政务委员会应当行使权力以保证人们严格遵守法律。

6. reserve [rɪ'zɜːv]
v. 预订；保留，留出 n. 储备物;(野生动物)保护区
A separate room is reserved for smokers.
另有一个房间留给吸烟者用。
【re-往回 + serv-保持 →“保留”】

7. reservation [‚rezə'veɪʃən]
n. 预订；保留意见；保留地
I have my reservations about his ability to do the job.
我对於他做该项工作的能力持保留看法。

8. reservoir ['rezəvwɑː]
n. 水库，蓄水池；储藏，储备
She found she had reservoirs of unexpected strength.
她发现自己潜藏着意想不到的力量。

9. preserve [prɪ'zɜːv]
v. 保护，维护；保存，保留
n. 经加工保存的水果，果酱；被认为某人所专有的活动、爱好等
The calm courage of the pilot preserved the lives of the passengers.
飞行员临危不惧的勇气保住了乘客们的生命。
【pre-在前，早先 + serv-保持（或保护） →“保存”】

10. conserve [kən'sɜːv]
v. 保护，保存；节约(水，能源等)
n. ['kɒnsɜːv] 蜜饯；果酱
The factories have closed for the weekend to conserve energy.
这些工厂在那个周末关了厂以节省能源。
【con-表强调 + serv-保持（或保护） →“保存”】

11. conservation [‚kɒnsə'veɪʃən]
n. 保护，保存；节约
Many people are concerned about animals and wildlife conservation.
许多人都关心动物及野生动植物的保护工作.

12. conservative [kən'sɜːvətɪv]
adj. 保守的，守旧的 n. 保守主义者；保守党党员
People tend to be more liberal when they're young and more conservative as they get older.
人们在年轻时常常更开放，年纪越大就越保守。