Pat is sing a song for Children哪里错了

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Pat is sing a song for Children哪里错了

Pat is sing a song for Children哪里错了
Pat is sing a song for Children哪里错了

Pat is sing a song for Children哪里错了
现在进行时 be doing sth
Pat is singing a song for Children pat正在为孩纸们唱歌

be doing sth.应该用ing形式,也就是说,pat is singing a song for children.

singing

Pat is singing a song for Children.
is后面要加动词的ing形式

pat is singing a song for children

sing变为 singing

有is了,应该是现在进行时吧,Pat is singing a song for Children

singing

sing 后加ing