Questions & Answers about Der Zug fährt gleich ab.
Because der Zug is the subject of the sentence — it is the thing doing the action.
In German, the article changes depending on the noun’s role in the sentence:
- der Zug = nominative, used for the subject
- den Zug = accusative, usually for a direct object
- dem Zug = dative, often for an indirect object or after certain prepositions
Here, the train is the one that departs, so nominative is needed: der Zug.
Fährt is the 3rd person singular present-tense form of fahren.
The verb fahren means to drive / to go / to travel, and in transport contexts it is also used for things like trains, buses, and cars moving.
Its present-tense forms are:
- ich fahre
- du fährst
- er/sie/es fährt
- wir fahren
- ihr fahrt
- sie/Sie fahren
Since der Zug is grammatically he/it in German, the correct form is fährt.