inquire
单词辨析：
最普通用词，指提出问题让人回答，多用于口语中。
You'd better ask someone the way to the airport.
你最好问一下去飞机场怎么走。
May I ask you a question?
我可以问你一个问题吗？
较正式用词，指为了解真实情况而详细询问。
We inquired about the way to the station.
我们打听去车站的路。
The police inquired at the next door.
警察去问了隔壁那家。
She inquired when the national library would open.
她询问国家图书馆何时开门。
作此义解时，可与 ask 换用。
He queried/asked if she would come to the party.
他询问她是否参加聚会。
'What time are you leaving?' Tom queried/asked.
“你们什么时候出发？”汤姆问道。
She queried/asked the president about the economic situation.
她就经济情况向总统提问。
指因感到可疑或为了解情况、弄清究竟而正式地发问，尤指就某一罪案进行盘问。
She questioned the manager closely.
她问了经理很多问题。
The murderer was questioned for 3 hours.
凶手被审问了3个小时。
相关例句：
I'll inquire about the flights.
我将打听有关航班的情况；
I came here to inquire about the product.
我来是想问一问有关产品的问题。
The mayor set up a committee to inquire into local unemployment.
市长成立了一个委员会调查当地的失业问题。
He was so impressed that he inquired the young shepherd's name.
他深受震动，就问那个年轻的牧羊人叫什么名字。
He inquired whether there had been any messages for him
他询问是否有留给他的口信。
Elsie called to inquire after my health.
埃尔茜打电话来问候我。