have，has怎样变一般疑问句

1 have ,has 后跟的是过去分词时，have,has 是助动词，可以直接放在句首。
He has gone to the park.----Has he gone to the park?
We have found the key.----Have you found the key?
2 have ,has 后接的是名词、代词、to 不定式时，用Do,Does 开头，加主语再加have
He has a dog.----Does he have a dog?
We have lunch at 12:00.---Do you have lunch at 12:00?
They have some friends .---Do they have any friends?

当谓语 “有” “吃”的意思，用 Do , Does 变一般疑问句
I have eggs and bacon for breakfast.
Do you have eggs and bacon for breakfast?
但如果角色就是助动词，如完成时，就把 have, has, 变成疑问词，置于句首
I have been to Shanghai before.
Have you been to Shanghai before?

1:have ,has 后跟的是过去分词时，have,has 是助动词，可以直接放在句首。
He has gone to the park.----Has he gone to the park?
We have found the key.----Have you found the key?
2:have ,has 后接的是名词、代词、to 不定式时，用Do,Does 开头，加主语再加have
He has a dog.----Does he have a dog?
We have lunch at 12:00.---Do you have lunch at 12:00?
They have some friends .---Do they have any friends🌚

英语语法have开头的一般疑问句