"all of a sudden"是一个口语化的副词短语,表示事情发生得非常突然、毫无预兆,相当于中文的“突然;忽然;猛地”。
它的功能是修饰整个句子或谓语动词,强调动作/事件的“突发性”。常见位置有3种:
All of a sudden, the sky turned dark and it started to thunder.
(突然,天空变黑,开始打雷。)
We were having dinner when all of a sudden the phone rang.
(我们正在吃晚饭,突然电话响了。)
The car in front of us stopped all of a sudden.
(我们前面的车突然停了下来。)
它是固定短语,不能拆分或替换词(比如不能说"all of the sudden"或"all of a suddenly");
相比单个副词"suddenly","all of a sudden"更口语化、强调意外感,常用于日常对话或叙事。
短语/单词 | 用法差异 | 例子 |
---|---|---|
all of a sudden | 口语化,强调“毫无预兆” | All of a sudden, I forgot his name. |
suddenly | 更正式,可修饰动词/形容词 | Suddenly, I realized I was late. |
out of the blue | 更强调“完全意外”(像从蓝天掉下来) | Her call came out of the blue. |