[誤] Nowadays, some young people still stay at their parents\' home eating and drinking free, even after having their own families.
[正] Nowadays, some young people are still freeloaders at their parents\' home, even after having their own families.
注:freeloader 指“利用別人的慷慨占便宜的人”或“寄生蟲”,用在這里十分準確和地道。