boy【复数】child【复数】can【否定式】
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boy【复数】child【复数】can【否定式】boy【复数】child【复数】can【否定式】boy【复数】child【复数】can【否定式】boyschildrencan''tboyschildre
boy【复数】child【复数】can【否定式】
boy【复数】child【复数】can【否定式】
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！