当陈述部分是everyone / everybody,someone / somebody,no one / nobody,none等表示人的不定代词时,反意疑问句部分的主语多用they,但也可用he；当陈述部分的主语是everything,anything,something,nothing等表示物的不定代词时,反意疑问句部分的主语用it.
例 Nobody came when I was out,did they?我在外时,没人来过,是吗?
Everything has gone wrong today,hasn’t it?今天什么都出问题了,是不是?