单数变复数的题目如下:
toy- ship- boy- penil- bus- book- sheep- leaf- knife- man- figh-ment- ferry- wish-radio- hippo- potato- nome- milk- tooth- water- china- map- deer。
答案:toys- ships- boys- penils- buses- books- sheep- leaves- knives- men- figh-ments- ferries- wishes- radios- hippoes- potatoes- nomes- milk- teeth- water- china- maps- deer。
单数变复数的规则口诀:
名词单数变复数,直接加-s占多数;s、x、z、ch、sh来结尾,直接加上-es;词尾是f或fe,加-s之前先变ve;辅母+y在词尾,把y变i再加-es;词尾字母若是o,常用三个已足够,要加-es请记好,hero、tomato、potato。