一般疑问句也可称为 “yes / no questions”,因这种问句通常用yes / no来回答,相当于汉语中的“……吗?”其语序是:系动词be / 助动词/ 情态动词+主语+其他成分?如:Are you from Japan?Yes I am. / No I'm not.Is her sister doing her homework now?