If I have to ask a person to speak softly or not to speak loud then what should I say.
**Neither a teacher nor a native speaker.**
I believe there are many possibilities here.
Please speak in a low voice!
Would you please speak more quietly?
I guess there are way better versions than mine, though.
P.S. Remember to use a ? when it's a question.
Cheers!
Please speak more quietly.
Please lower your voice.
Please don't speak so loudly.
I would have used an exclamation mark if I hadn't used the word please. With please, it's more of a request. Without, it's an order.
Do the grammar books still say that an exclamation point is essential after an exclamation? I'm sure many English writers, even those who bother trying to punctuate correctly, reserve the mark for a statement spoken emphatically.
And no, you don't use two marks in order to both signal an imperative and to indicate emphasis!!