第一部分：语法知识（词类）一.名词：名词单复数，名词的格式(一)名词单复数1.一般情况，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds2.以s. x. sh. ch结尾，加-es，如：bus-buses, box-boxes, brush-brushes, watch-watches3.以“辅音字母+y”结尾，变y为i, 再加-es，如：family-families, strawberry-strawberries4.以“f或fe”结尾，变f或fe为v, 再加-es，如：knife-knives5.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不可数名词的复数就是原型： pape
