At the airport: Boarding at the gate

💬 [登機] is specifically for boarding a plane: [登] is "get on / board" and [機] is "plane." You can reuse [登] in other travel words too, like [登船] "board a ship."

💬 In airport Chinese, [門] literally means "door/gate," and in [登機門] it means the boarding gate. You'll also see it in place names like [南門] "south gate."

💬 [登機門] is literally [登機] + [門], "boarding" + "gate." Chinese often builds clear noun compounds this way, like [候機室] "waiting room" at the airport.

💬 Put [嗎] at the end of a statement to turn it into a yes/no question: [到了。] becomes [到了嗎？] You can reuse that with almost anything, like [可以嗎？] "Is it okay?"

💬 [到了嗎？] uses [了] with [到] to ask whether you've reached a point already. The same pattern works elsewhere: [開始了嗎？] "Has it started?"

💬 [了] often marks that something has now happened or changed. In [開始登機了], it's like "boarding has started now."

💬 [到] plus [了] often means "have arrived / have reached." You can use the same pattern with places too, like [到台北了] "have arrived in Taipei."

💬 In [就在前面], [就] adds the sense of "right" or "exactly," not only "then." Compare [在前面] "ahead" with [就在前面] "right ahead."