(Demonstrative/Number + Measure Word +) 男孩
The noun 男孩 (nánhái) means "boy" and refers to a young male person. It can be used with demonstratives and measure words, such as 那些男孩 (those boys) or 一个男孩 (a boy). It is a common everyday word for referring to boys or young men.
隔壁的男孩今年要上中学了。
Gébì de nánhái jīnnián yào shàng zhōngxué le.
The boy next door is starting middle school this year.
一个男孩跑过来问我要不要帮忙。
Yí gè nánhái pǎo guòlái wèn wǒ yào bú yào bāngmáng.
A boy ran over and asked me if I needed help.
那个男孩长得像他爸爸。
Nà gè nánhái zhǎng de xiàng tā bàba.
That boy looks like his father.