1．一般情况下，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
man-men, woman-women, policeman-policemen, policewoman-policewomen, mouse-mice，child-children，foot-feet,h-teeth，fish-fish, people-people, Chinese-Chinese, Japanese-Japanese
6.写出下列各词的复数
I _________him _________this ___________her ______watch _______child _______photo ________diary ______day________ foot________ book_______ dress ________tooth_______ sheep ______box_______ strawberry _____thief _______yo-yo ______ peach______ sandwich ______man______ woman_______ paper_______ juice___________water________ milk________ rice__________ tea__________
