soon： 常用词，指行动快，完成速度快。 at once： 口语中常用，语气强烈，指时间紧迫，一刻也不能耽误。 right away： 主要用于美国英语，语气稍弱于at once，强调动作迅速。

AT ONCE的意思、解释及翻译：1. immediately: 2. At once also means at the same time: 。了解更多。

at once和immediately的区别有词性不同、用法不同、侧重点不同。 1、词性不同. at once：at once意为立刻马上，是一个介词词组，由介词at与once组成。 immediately：immediately意为立刻，立即，是一个副词，是形容词immediate的副词形式。 2、用法不同. at once：作状语。

2018年10月24日 · at once 口语 中常用，语气强烈，指时间紧迫，一刻也不能耽误。 right away主要用于美国英语，语气稍弱于at once，强调动作迅速。 All at once Phil disappeared. 菲尔突然不见了。 At once I heard a soft purr. 立刻，我听到一阵温柔的咕噜声。 The place at once enraptured me. 那个地方一下子把我迷住了。 We agreed to leave at once. 我们同意立即离开。 Get off that bed at once! 马上离开那张床！ I'm leaving for Rome at once. 我马上就去罗马。

All at one time; simultaneously: Everything happened at once. The view of the skyline is at once awesome, grand, and disappointing. 2. Immediately; instantly: Leave the room at once. 1. Another time; again: Could you repeat yourself once more? 2. As usual; in typical fashion: Once more, you've proven yourself inept at chess.

How to use once in a sentence. one time and no more; at any one time : under any circumstances : ever; at some indefinite time in the past : formerly… See the full definition

Everything happened at once – she graduated, got a job, and got married, all in June! AT ONCE definition: 1. immediately: 2. At once also means at the same time: . Learn more.

at once: (immediately, very soon, right away) 【说明：】at once （立刻，马上）为一级通用的副词片语，也可以作为同时(simultaneously) 解，如： This book is at once interesting and structive. （此书既有趣又有益。） 【例：】 (1) He asked me to come to his office at once. 他请我立刻就到 …

Discover everything about the word "AT ONCE" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide.

Also, once for all. Idioms once in a while, at intervals; occasionally: She stops in to see us once in a while. Idioms once or twice, a very few times; infrequently: I've seen her in the elevator once …