🗣️ 情景例句
If you don't know a person's last name, use 'ma'am' or 'sir'.
如果你不知道一人的姓， 你应称呼他为 'ma'am' 或 'sir' 。
That's fine. What time do I have to be at the airport?
好的。我应该几时到达机场？
Though he was reluctant to do so at first, we eventually persuaded him to take us.
一开始，他很不愿意，但经劝说，终于同意了。