三单疑前为什么加Does例如：does he like drawing pictures? 还有,此例句明明he是第三人

三单疑前为什么加Does例如：does he like drawing pictures? 还有,此例句明明he是第三人 Does he like……后面动词要不要加ing?是Does he like drawing Who does like drawing pictures? 对吗? What does he like doing?前面有does为什么后面加doing do后面加动词原形,比如说does he like play piano,为什么不是does he like playi Does he like music?He ____ does He does like swimming. What does he like? What does he like Does he like后为什么用playing he does not watch tv为什么要加does He draws pictures ____ his teacher does.