Officialize
vt. 使官方化, 使成為正式, 置于政府機關管轄下
??? 情景例句
You probably heard about it. We have private teachers in our holiday.
或許你已經聽說過。我們交大的學生在假期間做家教。
He said he spoke a little English.
他說他會說一些英語。
I'll teach you if you like.
要是你愿意學，我來教你。