(一).Don't you dare hail on me.不要毀約。
This is often an angry way to say “Don't break your promise.” Someone promised to do something with the speaker and the speaker wants the person to keep the promise. gfBfc hail on違背(約定），吃閉門羹，曠課

原音重現：

A: I'm not sure if I can make it to your party.
我不確定能不能去參加你的晚會。
B: Don't you dare hail on me.
不要毀約哦。

(二).I promise you!真的！ /我保證！
This indicates the speaker wants another person to trust him. He is telling that person "Believe what I have said."
WOSh I promise S+V我保證……
I promise you that.我向你保證。
(You) Promise?你保證?，

原音重現：

A: Are you sure Billy will be here?
你確定比利會來？
B: I promise you! He said he was coming.
我確定！他說要來的。

美劇表達：
I'll take care of it, I promise.我保證我會 處理好的，
I promise you. I have never done any type of drug.我保證，我從來沒用過任何 藥物。
I promise I will call you everyday.我保證 每天都會給你打電話。