Why doesn't he like toys?------he doesn't like toys because it's boring
because后面的要提问的话就用why进行提问为什么不是why does he not like toys?因为does要和not一起用才能作为否定，并缩写为doesn't所有的do/did/does,is/are/am和那些情态动词作为否定的时候都要紧接着not才行的哦doesn't在这里只做“不”的翻译难道的用法是这样的疑问句don't you want some sweets?或者常说的反意疑问句you are a student,aren't you?you like playing football,don't you?