看绝望的主妇学高频短语：All of a sudden

All of a sudden: The phrase dates back to Shakespeare in The Taming of the Shrew. If something happens all of a sudden, quickly and without warning. An idiom that is a more poetic way of saying “suddenly.” As in All of a sudden she didn’t look sleepy any more.

中文释义：表示“突然；毫无征兆”。 等于suddenly或all at once，但是只能用来修饰整个句子，表示这件事发生的迅速、突然且出乎预料，通常放在句首或句尾。例句: So why did he get interested all of a sudden?— Search me.（那么他为什么突然感兴趣了呢？—我哪知道。）