「Are not .........?」的意思

Are not - verbally, we would say : ain't
Ain't means are not外，它也代表 is not, am not, has not,
eg
Ain't got no money
He ain't heavy, he's my brother (a famous song by The Animals)

From Longman Dictionary
Informal. Some people think it's grammatically wrong. It could be used as double negative (e.g. I ain't got no money). Ain't can mean is not, have not, am not, are not, has not.

Do not = don't
Do not eat anything before you sleep.

「Are not .........?」係不是既意思

「Do not...........?」係不要既意思