① 直接+ s : 如bags, doors, Germans, bikes 【以元音加o结尾直接加s，如
photos, pianos; 以辅音加o结尾的词常加es，如 potatoes, tomatoes, heroes 】
② 以s, x, z, ch, sh 结尾加es 如buses, boxes, quizzes(特殊词尾双写z), watches, dishes
① 数词+量词+of+名词
a glass of milk a bottle of water
a box of candy a piece of advice
a bowl of rice a ton of wool
two glasses of milk two bottles of water two boxes of candy three pieces of advice
5. There are fruit trees in this field.
6. There is a cow on the farm.
Exercises 1
双基 P2-3 第一课时
Find some rules of this grammar.
可数的 不可数的
可数名词单数变复数 词尾规则变化：
1. We give it to the cows and sheep. 2. We have a few goats and pigs. 3. And we also have some geese. 4. I see them on the river.
Phrase feed the chickens and ducks
复数 6. wolves 7. policemen 8. lilies 9. foxes 10. heroes
