第 28 课: 动物；真的，假的-1

Two gray fish are swimming. 两条灰色的鱼在游

One gray fish is swimming. 一条灰色的鱼在游

A white dog is walking. 一只白色的狗在走

A cat is walking. 一只猫在走

a kangaroo 一只袋鼠

a herd of goats 一群山羊

a herd of cows 一群牛

Two cows are running. 两头牛在跑