at once

漢語翻譯

詞意辨析：

immediately, instantly, presently, directly, shortly, soon, at once, right away

這些副詞或副詞詞組均有“立刻、馬上”之意。
immediately: 指做完一件事後，立即就做另一件事，中間一般沒有明顯的時間間隔。
instantly: 指恰恰就在此刻，一秒鐘也沒耽誤。
presently: 指不久、即將。
directly: 和immediately同義，指毫無遲疑。
shortly: 和soon同義，指動作發生或完成的速度之快。
soon: 常用詞，指行動快，完成速度快。
at once: 口語中常用，語氣強烈，指時間緊迫，一刻也不能耽誤。
right away: 主要用於美國英文，語氣稍弱於at once，強調動作迅速。

英文解釋：

副詞 at once:

1. without delay or hesitation; with no time intervening
   同義詞：immediately, instantly, straightaway, straight off, directly, now, right away, forthwith, in real time, like a shot
2. simultaneously
   同義詞：at a time, at one time

例句：

1. The man was so genial, so I was drawn to him at once.
   這人這么和藹，我立刻為他著迷。
2. We agreed to leave at once.
   我們同意立即離開。
3. Since she is seriously ill, we have to send for a doctor at once.
   既然她病得厲害，我們要馬上去請醫生。
4. We determined to go to the railway station at once.
   我們決定立刻去火車站。
5. It is necessary that he be sent there at once.
   有必要馬上派他到那裡去。
6. When I gave him the chance, he grabbed it at once.
   我給他這一機會，他立刻抓住不放。
7. If you see anything suspicious, inform the police at once.
   你要是看到什麼可疑的東西就馬上通知警察。
8. He stopped playing the piano at once.
   他立刻停止了彈鋼琴。