we can see some s[ ] on the hill.they are eating the grass.
问题描述：
we can see some s[ ] on the hill.they are eating the grass.
答
sheep 绵羊 绵羊单复数同行，所以不用+s
we can see some s[heep] on the hill,they are eating the grass
我们能看到一些绵羊在山丘上，他们正在吃青草。
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答
we can see some sheep
答
we can see some s[heep ] on the hill.they are eating the grass
sheep 羊 不可数名词,所以不用加s
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