名词变复数专项练习：1.bus 5.tomato2 box 6. potato 3 watch 7. dish 4 brush 1.buses2.boxes3. watches4.brushes5 tomatoes 6.potatoes7 dishes归纳：以s , sh , ch , tch , x, , o 结尾的词变复数加es.二 1.knife2.wife3.wolf4.shelf1.knives2.wives3.wolves4.shelves归纳：结尾词， 把以 f, fe 变成v , 在加es .3 1.baby2.family3.factory4.boy1.babies2.families3.factories4.boys归纳：辅音加y 结尾的词，把 y 变成i, 再加es. 但元音加y，直接加s .四 1.foot2.tooth3.goose1.feet2.teeth3.geese归纳：有些oo 可以变ee 五 1.apple tree 2.factory work3.man doctor4.woman teacher1.apple trees2.factory wor
