The child has the candy.The child is lucky 同义句
The child who(或that) has the candy is lucky.
得到糖的那个孩子真幸运.
把第一个句子变为后一句的定语从句.who has那里是一个空改：The child having the candy is luchy.The child with the candy is luchy.我找到答案了 不过还是十分感谢！