“ch”/“sh”结尾的单词复数结构的规定是怎么样的?

以sh。 ch结尾,加-es,如：brush-brushes, watch-watches还有s。 x结尾,也要加-es,如：bus-buses, box-boxes1．一般情况下,直接加-s,如：book-books, bag-bags, cat-cats, bed-beds 2．以s。 x。 sh。 ch结尾,加-es,如：bus-buses, box-boxes, brush-brushes, watch-watches 3．以“辅音字母+y”结尾,变y为i, 再加-es,如：family-families, strawberry-strawberries 4．以“f或fe”结尾,变f或fe为v, 再加-es,如：knife-knives 5．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