1.含有be动词的,be动词提前,其他不变(人称要变).
Eg.i am a student.
Are you a sthdent?
2 含有情态动词的,同1
Eg.She can speak Japanese.
Can she speak Japanese
3 不含be动词的,借助 助动词 do .do 要根据具体的人称,时态有所不同.
现在时,第一 二人称 do
现在时 ,第三人称单数 does,实意动词变回原型.
过去式 用did
Eg.i have a dog.
Do you have a dog?
He has a dog.
does he have a dog?
he had a dog last year.
did he have a dog last year?
若果你是初中的小朋友,这些就够了.