three sheep are eating grasses on the hill哪里错了three sheep are eat_英语解答

three sheep are eating grasses on the hill哪里错了
three sheep are eating grasses on the hill
这个句子哪里错了?
重点是sheep,eating,grasses

人气：184 ℃　时间：2020-03-19 18:44:10

解答

grasses ---grass
grass 不可数,没有复数
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