It may flatter you to know, Mastro Antonio, that I have come to you to beg for a favor.

您知道，安东尼奥师傅，我来是求您帮个忙的。

youdao

He was the kind of person who would flatter you to your face, and then slander you behind your back.

他是那种当面胁肩谄笑。背地里造谣中伤的人。

《新英汉大辞典》

I will flatter you today.

今天我要好好对您献殷勤。

youdao

He knew how to flatter you high and he knew how to flatter you low.

NEWYORKER: Politics and Prose

Pre-warn your target that you are going to flatter him or her.

FORBES: Six Scientific Ways to Suck up Successfully

As I say, it's much better to set a broad direction at this stage, which is for lower, simpler, flatter taxes, if necessary and then people know the direction you're travelling in, but you're not actually writing budgets, five years before they have to be delivered.

BBC: NEWS | Programmes | Politics Show | Jon Sopel interview