是叫你把普通句子转成问句的.

是叫你把普通句子转成问句的.He often reads newspaper .Does he often read newpaper 答案是这样的我不知道为什么要加Does,我当然知道是做的意思啦,是不是代表他做那件事,所以转问句就用那个呢?还有一条题目.They always sing and dance on sunday .Do they always sing and dance on sanday 也是加do的..解释清楚的话、可是不能加太多...（没分..） Does he often read newpaper Do they always sing and dance on sanday 请问谓语动词是那个，是代表read,sing and dance吗？