Subject + 病 + 了
The verb 病 (bìng) means to fall ill or to be sick. Unlike its noun usage, here 病 functions as a verb describing the state or act of becoming ill. It can stand alone or combine with other elements to describe various states of sickness.
他去年冬天病了一场,瘦了好几斤。
tā qù nián dōng tiān bìng le yì chǎng, shòu le hǎo jǐ jīn.
He fell ill last winter and lost several pounds.
孩子又病了,今天没去上学。
hái zi yòu bìng le, jīn tiān méi qù shàng xué.
The child is sick again and didn't go to school today.
她病得很厉害,连饭都吃不下。
tā bìng de hěn lì hài, lián fàn dōu chī bú xià.
She is very seriously ill and can't even eat.