摘要:)以“辅音字母+y ,把y改为“i ,再加“es .例如:country→countries,city→cities. (4).以“f 或“fe 结尾.要去掉“f或fe .再加“es .例如:knife→knives等. (5).以“o 结尾.表示“有生命或能生长 加“es .其余的则加“s . 例如:tomato→tomatoes,zoo→zoos.等. (6).不规则变化: 例如:sheep→sheep,child→children,foot→feet,man→men,woman→women, deer→dear,pencil-box→pencil-boxes,a man teacher→two menteachers, glasses→glasses,trousers→trousers.

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