boy【复数】child【复数】can【否定式】

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boy【复数】child【复数】can【否定式】

boys
children
can't

boys children can't

boys children could

boys 不要去y加ies
children 特殊的复数形式只能死记硬背
can't 或cannot,不能写cann't哦!

boys children can't

boys children can't

boy,children,can't 望采纳哦!