名词单数变复数的规则：
1.在单词后面加“s”，
如：an officer—officers a tourist—tourists a passport—passports
2.在以“s”“x”“sh”“ch”“o”结尾的单数名词变复数时，需要后面加“es”
如：a bus—buses a box—boxes a fish—fishes
3.以元音字母加“y”结尾的单数名词变复数，我们在词尾加“s”
如：a boy—boys a key—keys a play –plays
4.以辅音字母加“y”结尾的单词，需把y改为i再加es
如：a fly—flies a baby—babies a family—families
5.当单数名词的结尾是“f”或“fe”时，将f,fe改为v，再加es
如：a housewife—housewives life—lives
6.特殊的，man—men child—children sheep—sheep
名词单数变复数的规则：
1.在单词后面加“s”，
如：an officer—officers a tourist—tourists a passport—passports
2.在以“s”“x”“sh”“ch”“o”结尾的单数名词变复数时，需要后面加“es”
如：a bus—buses a box—boxes a fish—fishes
3.以元音字母加“y”结尾的单数名词变复数，我们在词尾加“s”
如：a boy—boys a key—keys a play –plays
4.以辅音字母加“y”结尾的单词，需把y改为i再加es
如：a fly—flies a baby—babies a family—families
5.当单数名词的结尾是“f”或“fe”时，将f,fe改为v，再加es
如：a housewife—housewives life—lives
6.特殊的，man—men child—children sheep—sheep
名词单数变复数的规则：
1.在单词后面加“s”，
如：an officer—officers a tourist—tourists a passport—passports
2.在以“s”“x”“sh”“ch”“o”结尾的单数名词变复数时，需要后面加“es”
如：a bus—buses a box—boxes a fish—fishes
3.以元音字母加“y”结尾的单数名词变复数，我们在词尾加“s”
如：a boy—boys a key—keys a play –plays
4.以辅音字母加“y”结尾的单词，需把y改为i再加es
如：a fly—flies a baby—babies a family—families
5.当单数名词的结尾是“f”或“fe”时，将f,fe改为v，再加es
如：a housewife—housewives life—lives
6.特殊的，man—men child—children sheep—sheep。