反意疑问句分以下两种情况：前部分陈述如果用肯定形式，后部分则用否定形式；如果前部分用否定形式，后部分则用肯定形式。
●难点磁场
1.(★★★★)He had little idea that it was getting so late,________?
A.didn’t he B.wasn’t it C.did he D.was it
2.(★★★★★)Mrs.Black doesn’t believe her son is able to design a digital camera, ?
A.is he B.isn’t he C.doesn’t she D.does she
