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Topic 119 可数名词
可数名词
不规则变化
man/men, woman/women, child/children
foot/feet, tooth/teeth, mouse/mice
单复数同形
deer, sheep, series, Chinese, Japanese
并合名词
bookstores, chairmen, sisters-in-law, passers-by, lookers-on
复数名词
people, police, family