you'd better 完整的形式是had better, had 在这边是助动词,所以后面的反义疑问句,应该用助动词的否定形式hadn't 所以填写hadn't 希望能帮到你,有问题沟通好了 再问: 我也想是hadn't 但你看上面和下面的人是怎么回事?答案千奇百怪 再答: you'd better = you had better 从语法结构上应该是填hadn't 再问: If you cool water,it turns into ice.对划线部分提问it turns into ice划线 _____ _____If you cool water 帮我看下这个谢谢 再答: 嗯,就楼上说的,what happens,很好的 再问: 谢谢,也谢谢楼上的,他等级低点