Subject + 沉默 + 了
沉默 (chénmò) means "silent" or "to fall silent," describing a state of not speaking, often implying solemnity or unease. It can function as both an adjective and a verb. For example, 大家都沉默了 means "everyone fell silent."
听到那个消息,大家都沉默了好一会儿。
tīng dào nà ge xiāoxi, dàjiā dōu chénmò le hǎo yīhuìr.
Upon hearing that news, everyone fell silent for quite a while.
他沉默了几秒钟才开口回答。
tā chénmò le jǐ miǎozhōng cái kāikǒu huídá.
He was silent for a few seconds before opening his mouth to answer.
餐桌上一片沉默,谁也不说话。
cānzhuō shàng yī piàn chénmò, shéi yě bù shuōhuà.
There was complete silence at the dining table; no one said a word.