摘要： 名词 这里强调两点:不可数名词都默认为单数.所以总是用is或者was. 如何加后缀: a．一般情况下.直接加-s.如:book-books, bag-bags, cat-cats, bed-beds b．以s. x. sh. ch结尾.加-es.如:bus-buses, box-boxes, brush-brushes, watch-watches c．以“辅音字母+y 结尾.变y为i, 再加-es.如:family-families, strawberry-strawberries d．以“f或fe 结尾.变f或fe为v, 再加-es.如:knife-knives e．不规则名词复数: man-men, woman-women, policeman-policemen, policewoman-policewomen, mouse-mice child-children foot-feet ,.tooth-teeth fish-fish, people-people, Chinese-Chinese, Japanese-Japanese

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