would you please----?I'm writing a 2000-word composition

Would You Please Be Quiet
你可不可以安静一点?..
be quiet是指在一个喧闹的环境中,突然一方要求另一方安静
keep quiet是指要求保持着一直安静...
would you please＼could you please后面只能跟动词原形,因为前面是情态动词would could.