watch的复数为watches，其意思是手表、怀表，例如“Let's synchronize our watches”的意思是咱们对一下表吧。根据可数名词单数变复数的规则，一般以—s、—z、—ch、—sh结尾的名词，其的复数形式是在词尾加—es，例如dish的复数形式为dishes；peach的复数是peaches等。

相关例句：

1、She had put her watch in her pocket for safe keeping.

为安全起见，她把手表放进了衣袋。

2、She gave me a watch for my birthday.

她送给我一块手表作为生日礼物。

3、She yawned and looked pointedly at her watch.

她打了个哈欠，又刻意地看了看手表。

4、Until the mid-1980s,the whole market was pocket watches.

直至20世纪80年代中期，市场上都是怀表。

5、I still hadn't wound my watch so I didn't know the time.

我还没有给表上发条，所以不知道时间。