否定句是要改的,但是疑问句却是不一定的
如果在疑问句中,问问题的人希望得到肯定的回答,那么就不用改的
如：Would you like some water?来点水吗?
some 如果意为:(修饰名词的单数形式)某一,某个
She is playing chess with some boy.
她在和一个男孩下棋.
改成否定的为 She is not playing chess with any boy.
改成疑问句 Is she playing chess with any boy?