he is playing cards with his friend改否定句

问题描述:

he is playing cards with his friend改否定句

he isn't playing cards with his friend.
陈述句变否定句的方法:
句中有动词be( am ,
is ,are ,was ,were),情态动词(can / could ,may ,must ,will ,would 等),助动词(如完成时态中的HAS / HAD ),变否定句时直接在这些词后加NOT ;否则要加助动词Do ,
Does (主语第三人称单数),
Did (一般过去时),原来的动词要还原;另外,句中有SOME 是一般改为ANY ,如果用AND 要改为OR(因为否定句中的并列要用OR)
加油!不明白再问!i’mplaying withthe baby 。playing withthe baby 对它提问What are you doing ?