why many people want to buy old cars?这句话对吗?还是why do many people.,需要加助动词吗
问题描述：
why many people want to buy old cars?这句话对吗?还是why do many people.,需要加助动词吗
答
需要的 why do many people.是正确的
只有who做主语 可以直接引导动词提问 其他的特殊疑问词提问 都需要借助 助动词 be 动词 情态动词等