both of her parents are doctors,改为否定句,即both of 可以改为什么?两个空,其它不变,仍旧是are

both of her parents are doctors,改为否定句,即both of 可以改为什么?两个空,其它不变,仍旧是are
both of her parents are doctors,改为否定句,即both of 可以改为什么?两个空,其它不变,仍旧是are

both of her parents are doctors,改为否定句,即both of 可以改为什么?两个空,其它不变,仍旧是are
Neither of her parents are doctors.

None of her parents are doctors.

neither of her parents are doctors