1.bird birds
2.family families
3.toy toys
4.watch watches
5.radio radios
6.piano pianos
7.milk 不可数名词
8.tomato tomatoes
9.paper 表示“纸”,不可数、
10.news 不可数名词.
11.sheep sheep
12.deer deers
13.man men
14.foot feet
15.child children
16.woman women
17.water 不可数名词呵呵、谢谢、会的~