they had nothing to do,反义疑问是什么
问题描述：
they had nothing to do,反义疑问是什么
答
They had nothing to do, did they?
只要记住：
前肯后否，前否后肯，时态一致。即可。
had为have的过去时态，所以后面要用did，保持时态一致。
当陈述部分有never，seldom, hardly，few，little，barely, scarcely, nothing，none,rarely 等否定意义的词汇时，后面的反意疑问句则为肯定形式。
答
they had nothing to do,did they?
答
They had nothing to do,did they?
nothing 否定词,反义疑问句遵循前否,后肯原则,had需要用助动词did,所以答案：They had nothing to do,did they
不明白的再问哟,请及时采纳,多谢!