| 可数名词单数变复数的规则变化 | ||
| 构词 | 例词 | 情况 |
| s | girl—girls book—books | 一般情况，词尾加-s |
| es | box—boxes watch—watches | 以-s、-sh、-x、-ch结尾的单词，词尾加-es |
| family—families baby—babies | 以辅音字母加-y结尾的单词，变y为i,再加-es | |
| wolf—wolves knife—knives | 以-f或-fe结尾的单词，变f或fe为v,再加-es | |
| s/es | 加-s radio—radios zoo—zoos photo—photos | 以-o结尾的单词 |
| 加-es potato—potatoes tomato—tomatoes | ||
| 可数名词单数变复数的不规则变化 | ||
| 构词 | 例词 | 情况 |
| 特殊 | man—men woman—women foot—feet goose—geese tooth—teeth | 改变中间的元音字母 |
| ox—oxen child—children | 词尾加-en或-ren | |
| fish—fish sheep—sheep deer—deer Chinese—Chinese | 单复数形式相同 | |
| 复合名词 | boy student—boy students | 中心词变复数 |
| man doctor—men doctors woman teacher—women teachers | 含man或woman的词，前后两词都变复数 | |
| 其他 | mouse—mice | |
