Subject + 死 + 了
死 (sǐ) means "to die" or "death." It is a direct and commonly used word, though in polite conversation speakers may prefer euphemisms like 去世 (to pass away). 死 can also be used as an intensifier in colloquial speech, as in 累死了 (exhausted to death).
那棵老树已经死了好几年了。
Nà kē lǎo shù yǐjīng sǐle hǎo jǐ nián le.
That old tree has been dead for several years.
今天加班到十点,我真的累死了。
Jīntiān jiābān dào shí diǎn, wǒ zhēn de lèi sǐ le.
I worked overtime until ten o'clock today; I'm absolutely exhausted.
听到那个消息,她伤心得要死。
Tīng dào nàge xiāoxi, tā shāngxīn de yào sǐ.
Upon hearing that news, she was heartbroken to death.