watch的第三人称单数形式是直接加es，即watches。watch可作名词和动词两种词性，含义为“注视”、“观察”、“照管”、“手表”、“监视”、“值班人”、“守夜人”。
watch的基本含义及用法介绍
watch主要用作名词、动词，作名词译为“ 手表”，动词为“看，观看”。常与动词keep连用,其后接for, on, over时watch前可加也可不加不定冠词a。例句有：
1、He watched the house for signs of activity.
他注视着那所房子里的动静。
2、Could you watch my bags for me while I buy a paper?
我去买份报纸，你能替我照看一下我的包吗？
3、Watch your bag─there are thieves around.
小心你的提包，这里有小偷。
4、She kept looking anxiously at her watch.
她焦急不安地一个劲儿看表。
5、The police have mounted a watch outside the hotel.
警方已在旅馆外面布置人监视。
6、The man was standing in his doorway watching him...
那个男人站在门口盯着他看。
7、I'd stayed up late to watch the film...
我熬夜看了那场电影。
8、Human rights groups have been closely watching the case...
人权组织一直在密切关注此案。
9、Parents can't be expected to watch their children 24 hours a day.
父母不可能每天24小时照看孩子。
10、I had the first watch that May evening.
我第一次执行警戒任务是在那个五月的晚上。
