陈述句就是主谓宾,这个不用说了把
一般疑问句有三种：1.句子中有be动词 am is are 把be动词提前 如：He is a student.Is he a student?2.句中没有be动词 就用助动词 第一二人称用do 第三人称用does 过去式用did 如：I play ball.改：Do you play ball?He plays ball.改：Does he play ball?He played ball.改：DId he play ball?3.句中有情态动词 can would should will must等 把情态动词提前 如：I can help you.改：Can you help me?
特殊疑问句：疑问词when what how where which等放在句首,后面接一般疑问句.如：When do you go home?When是疑问词,do you go home是一般疑问句 不懂可以继续问