I'd like to propose a toast to the bride and groom.

我提议为新郎新娘的幸福干杯！

《牛津词典》

Lavalais raised his glass to propose a toast to the newlyweds.

拉瓦莱斯举起了他的酒杯，向这对新婚夫妇敬酒。

《柯林斯英汉双解大词典》

I'd like to propose a toast to all of you.

我提议大家为所有人干杯。

youdao

So I want to propose a toast: To the friendship between our peoples, to the strength of our alliance, to the peace and prosperity that we seek, and to Their Majesties the King and the Queen.

WHITEHOUSE: President Obama and Prime Minister Shinawatra Deliver Remarks | The White House

And so I want to propose a toast -- I believe this is mine -- to our friends, President Lee and First Lady Kim, and to their delegation, most of all to the enduring alliance between our nations, a partnership of the heart that will never be broken.

WHITEHOUSE: President Obama Toasts President Lee Myung-Bak of the Republic of Korea | The White House

So I propose a toast to the Taoiseach and the people of Ireland.

WHITEHOUSE: White House St. Patrick's Day Reception