他长得像谁？
Who is he like?
他有丰富的常识。
He has a lot of common sense.
他虽年轻，却很博学。
He's wise for his age.
详解： for one's age“与年纪相比却……”
He's only ten and he made this.
译：他只有10岁就能做出这样的东西。
He's wise for his age.
译：他虽年轻，却博学。
He's wise considering his age.
He's wise for a man of his age.
他交际很广。
He knows a lot of people.
He's well-known.
He's very popular.
译：他很有人缘。
He has a large circle of acquaintances.
译：他交际广泛。
详解：“熟悉的人，认识的人”，但和friend（朋友）不同，虽没深交，但见过面、搭过话。
他是个有才干的人。
He's a go-getter.
详解：go-getter“有才能的人”，“干将”。