dish book pencil 写复数形式

dish book pencil 写复数形式 这几个单词的复数形式怎么写book,eraser,ruler,pencil,tape dish 复数 dish（复数形式） dish(复数形式) dish怎么变复数? dish的复数 dish（复数） dish复数是什么? dish和duck的复数 IS this his book?改为复数句 This is my pencil.改为同义句 This is a book和This is a bag 和This is a pen和This is a pencil和This is a ruler 的复数咋写.还有This is a pencil-box 复数怎么写 快点我来不及了 写出下列各词的复数形式.book、box、bed 、ruler、pencil - case、chair、foot、ear、boody、rubber 改为复数形式dish,box,class,watch is that a dish?复数句 That is her dish变复数 this is a dish变复数形式 this is may room用名词性物主代词mine写同义句 radio ,pencil box,的复数