做某事至关重要用英语怎么说

"It is of utmost importance to do something" 或 "It is crucial to do something" 可以用来表示做某事至关重要。

其中, "utmost" 是 utmost importance 的形容词形式, 意为"极度的"； "crucial" 是 crucial to 的形容词形式，意为"关键的"。

例句:

It is of utmost importance to arrive on time for the meeting. (到会议点击时间非常重要)
It is crucial to the success of the project that everyone works together. (项目成功关键在于大家共同工作)